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APPLICATION OF NATURAL STABLE APPLICATION OF NATURAL STABLE ISOTOPES IN LARVAL NUTRITION STUDIES ISOTOPES IN LARVAL NUTRITION STUDIES Lewis Le Vay & Julian GamboaDelgado School of Ocean Sciences, College of Natural Sciences Bangor University

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APPLICATION OF NATURAL STABLE APPLICATION OF NATURAL STABLE ISOTOPES IN LARVAL NUTRITION

STUDIESISOTOPES IN LARVAL NUTRITION

STUDIES

Lewis Le Vay amp Julian GamboashyDelgadoSchool of Ocean Sciences College of Natural Sciences

Bangor University

Stable isotopes applications in larval nutrition

You are what you eatWidely used in ecological studies

Ratios of 13C12C amp 15N14N proxies for organic matter assimilation

Safe alternative to radiolabels

Enriched short term tracer studies orNatural longer studies under normal feeding δ 13C 00 0

Tissue changes with time ingestion amp turnover rates

Hatcheries as mescosms

Mixing models contribution to growth from mixed food sources

Compound specific analysis amino acid utilisation

Ingestion and protein turnover using enriched feeds

eg Short term studies with enriched foods using flooding dosemodels developed for radiolabelled single amino acids

15N labelled algae Rotifers fed 24h Turbot larvae fed 14h

Allows estimation of (i) ingestion rate( ) gest o ate(ii) protein synthesis amp degradation(iii) comparison of dietary treatments

(Conceiccedilatildeo et al 2001)

Garlick et al 1980 Houlihan et al 1988

See also Conceiccedilatildeo et al (2007) for review

Longer term natural isotope signature changes

δ15N permil and CN ratios in Litopenaeus vannamei during larval development δ N permil and CN ratios in Litopenaeus vannamei during larval development Larvae were fed only on C gracilis (zoea stages) and Artemia (mysis stages) Horizontal dotted lines represent isotopic signatures of foods

(Gamboa-Delgado amp Le Vay under review)

Hatcheries as simple controlled food webs

Limited number of Selected for isotopic Limited number of sources

Selected for isotopic composition

Typical feedsunder normalrearing conditions

eg Shlechtreim et al (2004)

Jomori et al (2008)

14

Tissue isotopic signature changes with diet

-15

-14

1 2 3 4 5 6 7 8 9 10 11 12 13

∆13C δ13C δ13CDiscrimination factor

17

-16new diet isotopic signature

∆13C = δ13Cconsumer- δ13Cdiet

-18

-17

-19

δ13Ct= δ13Cass + (δ13Cinitialndash δ13Cass)e -(k+m)t

-20

days Rate of change

δ Ct δ Cass (δ Cinitial δ Cass)e

Hesslein et al 1993 modified from Fry amp Arnold (1982)

Contribution of live amp inert feeds to tissue growth in Sole larvae

-14

-16

-15artemia

metamorphosis

a

a

b

a

c

b

a

a

b

a

c

b

b

b

a

12C -18

-17

Li f d

a

b

a

bc

b

3C

δ13C

-20

-19Live feed70LF30IF30LF70IFInert feed

treatmentsdiff ti t d

rotifers

a

a

aa

c

d dc

δ13

-22

-21

inert feed

differentiated not added

Days after hatching

0 5 10 15 20 25-23

rotifer

Atlantic Arc Aquaculture Group

Gamboa Delgado et al 2008

y g

Nutrient assimilation and sources -application to compound feed components pp p p

Soy-protein based diet δ13C 25 36 permil Comparing 50 amp 90 δ13C -2536 permil δ15N 315 permil

Fishmeal based diet

Comparing 50 amp 90 fishmeal replacement with soy protein

Fishmeal based diet δ13C -2074 permil δ15N 926 permil Gamboa Delgado amp Le Vay (2009)

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Stable isotopes applications in larval nutrition

You are what you eatWidely used in ecological studies

Ratios of 13C12C amp 15N14N proxies for organic matter assimilation

Safe alternative to radiolabels

Enriched short term tracer studies orNatural longer studies under normal feeding δ 13C 00 0

Tissue changes with time ingestion amp turnover rates

Hatcheries as mescosms

Mixing models contribution to growth from mixed food sources

Compound specific analysis amino acid utilisation

Ingestion and protein turnover using enriched feeds

eg Short term studies with enriched foods using flooding dosemodels developed for radiolabelled single amino acids

15N labelled algae Rotifers fed 24h Turbot larvae fed 14h

Allows estimation of (i) ingestion rate( ) gest o ate(ii) protein synthesis amp degradation(iii) comparison of dietary treatments

(Conceiccedilatildeo et al 2001)

Garlick et al 1980 Houlihan et al 1988

See also Conceiccedilatildeo et al (2007) for review

Longer term natural isotope signature changes

δ15N permil and CN ratios in Litopenaeus vannamei during larval development δ N permil and CN ratios in Litopenaeus vannamei during larval development Larvae were fed only on C gracilis (zoea stages) and Artemia (mysis stages) Horizontal dotted lines represent isotopic signatures of foods

(Gamboa-Delgado amp Le Vay under review)

Hatcheries as simple controlled food webs

Limited number of Selected for isotopic Limited number of sources

Selected for isotopic composition

Typical feedsunder normalrearing conditions

eg Shlechtreim et al (2004)

Jomori et al (2008)

14

Tissue isotopic signature changes with diet

-15

-14

1 2 3 4 5 6 7 8 9 10 11 12 13

∆13C δ13C δ13CDiscrimination factor

17

-16new diet isotopic signature

∆13C = δ13Cconsumer- δ13Cdiet

-18

-17

-19

δ13Ct= δ13Cass + (δ13Cinitialndash δ13Cass)e -(k+m)t

-20

days Rate of change

δ Ct δ Cass (δ Cinitial δ Cass)e

Hesslein et al 1993 modified from Fry amp Arnold (1982)

Contribution of live amp inert feeds to tissue growth in Sole larvae

-14

-16

-15artemia

metamorphosis

a

a

b

a

c

b

a

a

b

a

c

b

b

b

a

12C -18

-17

Li f d

a

b

a

bc

b

3C

δ13C

-20

-19Live feed70LF30IF30LF70IFInert feed

treatmentsdiff ti t d

rotifers

a

a

aa

c

d dc

δ13

-22

-21

inert feed

differentiated not added

Days after hatching

0 5 10 15 20 25-23

rotifer

Atlantic Arc Aquaculture Group

Gamboa Delgado et al 2008

y g

Nutrient assimilation and sources -application to compound feed components pp p p

Soy-protein based diet δ13C 25 36 permil Comparing 50 amp 90 δ13C -2536 permil δ15N 315 permil

Fishmeal based diet

Comparing 50 amp 90 fishmeal replacement with soy protein

Fishmeal based diet δ13C -2074 permil δ15N 926 permil Gamboa Delgado amp Le Vay (2009)

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Ingestion and protein turnover using enriched feeds

eg Short term studies with enriched foods using flooding dosemodels developed for radiolabelled single amino acids

15N labelled algae Rotifers fed 24h Turbot larvae fed 14h

Allows estimation of (i) ingestion rate( ) gest o ate(ii) protein synthesis amp degradation(iii) comparison of dietary treatments

(Conceiccedilatildeo et al 2001)

Garlick et al 1980 Houlihan et al 1988

See also Conceiccedilatildeo et al (2007) for review

Longer term natural isotope signature changes

δ15N permil and CN ratios in Litopenaeus vannamei during larval development δ N permil and CN ratios in Litopenaeus vannamei during larval development Larvae were fed only on C gracilis (zoea stages) and Artemia (mysis stages) Horizontal dotted lines represent isotopic signatures of foods

(Gamboa-Delgado amp Le Vay under review)

Hatcheries as simple controlled food webs

Limited number of Selected for isotopic Limited number of sources

Selected for isotopic composition

Typical feedsunder normalrearing conditions

eg Shlechtreim et al (2004)

Jomori et al (2008)

14

Tissue isotopic signature changes with diet

-15

-14

1 2 3 4 5 6 7 8 9 10 11 12 13

∆13C δ13C δ13CDiscrimination factor

17

-16new diet isotopic signature

∆13C = δ13Cconsumer- δ13Cdiet

-18

-17

-19

δ13Ct= δ13Cass + (δ13Cinitialndash δ13Cass)e -(k+m)t

-20

days Rate of change

δ Ct δ Cass (δ Cinitial δ Cass)e

Hesslein et al 1993 modified from Fry amp Arnold (1982)

Contribution of live amp inert feeds to tissue growth in Sole larvae

-14

-16

-15artemia

metamorphosis

a

a

b

a

c

b

a

a

b

a

c

b

b

b

a

12C -18

-17

Li f d

a

b

a

bc

b

3C

δ13C

-20

-19Live feed70LF30IF30LF70IFInert feed

treatmentsdiff ti t d

rotifers

a

a

aa

c

d dc

δ13

-22

-21

inert feed

differentiated not added

Days after hatching

0 5 10 15 20 25-23

rotifer

Atlantic Arc Aquaculture Group

Gamboa Delgado et al 2008

y g

Nutrient assimilation and sources -application to compound feed components pp p p

Soy-protein based diet δ13C 25 36 permil Comparing 50 amp 90 δ13C -2536 permil δ15N 315 permil

Fishmeal based diet

Comparing 50 amp 90 fishmeal replacement with soy protein

Fishmeal based diet δ13C -2074 permil δ15N 926 permil Gamboa Delgado amp Le Vay (2009)

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Longer term natural isotope signature changes

δ15N permil and CN ratios in Litopenaeus vannamei during larval development δ N permil and CN ratios in Litopenaeus vannamei during larval development Larvae were fed only on C gracilis (zoea stages) and Artemia (mysis stages) Horizontal dotted lines represent isotopic signatures of foods

(Gamboa-Delgado amp Le Vay under review)

Hatcheries as simple controlled food webs

Limited number of Selected for isotopic Limited number of sources

Selected for isotopic composition

Typical feedsunder normalrearing conditions

eg Shlechtreim et al (2004)

Jomori et al (2008)

14

Tissue isotopic signature changes with diet

-15

-14

1 2 3 4 5 6 7 8 9 10 11 12 13

∆13C δ13C δ13CDiscrimination factor

17

-16new diet isotopic signature

∆13C = δ13Cconsumer- δ13Cdiet

-18

-17

-19

δ13Ct= δ13Cass + (δ13Cinitialndash δ13Cass)e -(k+m)t

-20

days Rate of change

δ Ct δ Cass (δ Cinitial δ Cass)e

Hesslein et al 1993 modified from Fry amp Arnold (1982)

Contribution of live amp inert feeds to tissue growth in Sole larvae

-14

-16

-15artemia

metamorphosis

a

a

b

a

c

b

a

a

b

a

c

b

b

b

a

12C -18

-17

Li f d

a

b

a

bc

b

3C

δ13C

-20

-19Live feed70LF30IF30LF70IFInert feed

treatmentsdiff ti t d

rotifers

a

a

aa

c

d dc

δ13

-22

-21

inert feed

differentiated not added

Days after hatching

0 5 10 15 20 25-23

rotifer

Atlantic Arc Aquaculture Group

Gamboa Delgado et al 2008

y g

Nutrient assimilation and sources -application to compound feed components pp p p

Soy-protein based diet δ13C 25 36 permil Comparing 50 amp 90 δ13C -2536 permil δ15N 315 permil

Fishmeal based diet

Comparing 50 amp 90 fishmeal replacement with soy protein

Fishmeal based diet δ13C -2074 permil δ15N 926 permil Gamboa Delgado amp Le Vay (2009)

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Hatcheries as simple controlled food webs

Limited number of Selected for isotopic Limited number of sources

Selected for isotopic composition

Typical feedsunder normalrearing conditions

eg Shlechtreim et al (2004)

Jomori et al (2008)

14

Tissue isotopic signature changes with diet

-15

-14

1 2 3 4 5 6 7 8 9 10 11 12 13

∆13C δ13C δ13CDiscrimination factor

17

-16new diet isotopic signature

∆13C = δ13Cconsumer- δ13Cdiet

-18

-17

-19

δ13Ct= δ13Cass + (δ13Cinitialndash δ13Cass)e -(k+m)t

-20

days Rate of change

δ Ct δ Cass (δ Cinitial δ Cass)e

Hesslein et al 1993 modified from Fry amp Arnold (1982)

Contribution of live amp inert feeds to tissue growth in Sole larvae

-14

-16

-15artemia

metamorphosis

a

a

b

a

c

b

a

a

b

a

c

b

b

b

a

12C -18

-17

Li f d

a

b

a

bc

b

3C

δ13C

-20

-19Live feed70LF30IF30LF70IFInert feed

treatmentsdiff ti t d

rotifers

a

a

aa

c

d dc

δ13

-22

-21

inert feed

differentiated not added

Days after hatching

0 5 10 15 20 25-23

rotifer

Atlantic Arc Aquaculture Group

Gamboa Delgado et al 2008

y g

Nutrient assimilation and sources -application to compound feed components pp p p

Soy-protein based diet δ13C 25 36 permil Comparing 50 amp 90 δ13C -2536 permil δ15N 315 permil

Fishmeal based diet

Comparing 50 amp 90 fishmeal replacement with soy protein

Fishmeal based diet δ13C -2074 permil δ15N 926 permil Gamboa Delgado amp Le Vay (2009)

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

14

Tissue isotopic signature changes with diet

-15

-14

1 2 3 4 5 6 7 8 9 10 11 12 13

∆13C δ13C δ13CDiscrimination factor

17

-16new diet isotopic signature

∆13C = δ13Cconsumer- δ13Cdiet

-18

-17

-19

δ13Ct= δ13Cass + (δ13Cinitialndash δ13Cass)e -(k+m)t

-20

days Rate of change

δ Ct δ Cass (δ Cinitial δ Cass)e

Hesslein et al 1993 modified from Fry amp Arnold (1982)

Contribution of live amp inert feeds to tissue growth in Sole larvae

-14

-16

-15artemia

metamorphosis

a

a

b

a

c

b

a

a

b

a

c

b

b

b

a

12C -18

-17

Li f d

a

b

a

bc

b

3C

δ13C

-20

-19Live feed70LF30IF30LF70IFInert feed

treatmentsdiff ti t d

rotifers

a

a

aa

c

d dc

δ13

-22

-21

inert feed

differentiated not added

Days after hatching

0 5 10 15 20 25-23

rotifer

Atlantic Arc Aquaculture Group

Gamboa Delgado et al 2008

y g

Nutrient assimilation and sources -application to compound feed components pp p p

Soy-protein based diet δ13C 25 36 permil Comparing 50 amp 90 δ13C -2536 permil δ15N 315 permil

Fishmeal based diet

Comparing 50 amp 90 fishmeal replacement with soy protein

Fishmeal based diet δ13C -2074 permil δ15N 926 permil Gamboa Delgado amp Le Vay (2009)

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Contribution of live amp inert feeds to tissue growth in Sole larvae

-14

-16

-15artemia

metamorphosis

a

a

b

a

c

b

a

a

b

a

c

b

b

b

a

12C -18

-17

Li f d

a

b

a

bc

b

3C

δ13C

-20

-19Live feed70LF30IF30LF70IFInert feed

treatmentsdiff ti t d

rotifers

a

a

aa

c

d dc

δ13

-22

-21

inert feed

differentiated not added

Days after hatching

0 5 10 15 20 25-23

rotifer

Atlantic Arc Aquaculture Group

Gamboa Delgado et al 2008

y g

Nutrient assimilation and sources -application to compound feed components pp p p

Soy-protein based diet δ13C 25 36 permil Comparing 50 amp 90 δ13C -2536 permil δ15N 315 permil

Fishmeal based diet

Comparing 50 amp 90 fishmeal replacement with soy protein

Fishmeal based diet δ13C -2074 permil δ15N 926 permil Gamboa Delgado amp Le Vay (2009)

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Nutrient assimilation and sources -application to compound feed components pp p p

Soy-protein based diet δ13C 25 36 permil Comparing 50 amp 90 δ13C -2536 permil δ15N 315 permil

Fishmeal based diet

Comparing 50 amp 90 fishmeal replacement with soy protein

Fishmeal based diet δ13C -2074 permil δ15N 926 permil Gamboa Delgado amp Le Vay (2009)

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

QuickTimetrade and a decompressor

are needed to see this picture

N sourcesfishsoyafishsoya

Obs 6931Exp 5050Exp 5050

Obs 3268Exp 1090

Nitrogen isotopic changes (permil) in muscle tissue of PL L vannameifed diets based on fish meal (FM) and soy protein isolate (SPI)

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

But individual amino acids behave differently

0 0

-50

00

Lys

Met Leu

Val Ile Phe Tyr

Arg His Glu

Asp AlaSer

Pro

ThrG

ly

Bulk

15 0

-100

δ 13

C

-200

-150

-250

-300

δ13C of tissue amino acids following acid hydrolysis of marine shrimp tail m scle protein (750 gml) sing a Dione ICS3000 strong anionmuscle protein (750μgml) using a Dionex ICS3000 strong anion exchange chromatography system interfaced to a GVI Liquiface and Isoprime IRMS (Preston unpublished data)

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

QuickTimetrade and a decompressor

are needed to see this picturep

Isotope fractionation of C associated with the tricarboxylic acid p y(TCA) cycle and other metabolic processes

Frantle et al (1999)

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

∆15N pattern less clear also related to number of transamination steps

QuickTimetrade and a decompressor

are needed to see this picture

∆15N for bulk material and individual amino acids between Brachionus plicatilis and its food source (Tetraselmis suecica)

McLelland and Montoya (2002

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Example from insects pollen vs nectar as sources of carbon for amino acid synthesis sources of carbon in the butterfly Heliconius

QuickTimetrade and a decompressor

are needed to see this picture

QuickTimetrade and a decompressor

are needed to see this picture

Essential and non-essential amino acid δ13C from pollen larval host plant and eggs OrsquoBrien at al (2003)

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Where nexthellip

More on dietary sources and utilisation of inert feedsoptimising co-feeding inert feed ingestion and digestibility

Refinement of compound specific anaysis using LC-IRMS(eg McCullagh et al 2008)

Amino-acid requirements with developmentgrowth(eg Berthold et al 1993)

Bioavailability of individual amino acids (eg Saavedra et al 2007)( g )

Utilisation of feed componentseg (Gamboa Delgado amp Le Vay 2009)eg (Gamboa-Delgado amp Le Vay 2009)

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100

Berthold HK Hachey DL Reeds PJ Thomes OP Hoeskemas amp Klein PD (1991) Uniformly 13C-labeled algal protein used to determine amino acid essentiality in vivo PNAS 88 8091-8095

Conceiccedilatildeo LEC Morais S Roslashnnestad I 2007b Tracers in fish larvae nutrition a review of methods and applications Aquaculture 267 62ndash75

Fantle MS Dittel AI Schwalm S Epifanio CE Fogel ML 1999 A foodweb analysis of the juvenile crab Callinectes sapidus using stable isotopes in whole animals and individual amino acids Oecologia 120 416-426

Fry B 2006 Stable Isotope Ecology Springer Science NY USA 390 pp

Fry B Arnold C 1982 Rapid 13C12C turnover during growth of brown shrimp (Penaeus aztecus) Oecologia 54 200ndash204

Gamboa-Delgado J Cantildeavate JP Zerolo R and Le Vay L 2008 Natural carbon stable isotope ratios as indicators of the relative contribution of live and inert diets to growth in larval Senegalese sole (5) Aquaculture 280 190-197

Gamboa-Delgado J and Le Vay L 2009 Artemia replacement in co-feeding regimes for mysis and postlarval stages of Litopenaeus vannamei Nutritional contribution of inert diets to tissue growth as indicated by natural carbon stable isotopes Aquaculture under review

Gamboa-Delgado and Le Vay L 2009 Nitrogen stable isotopes as indicators of the relative contribution of soy protein and fish meal to tissue growth in Pacific white shrimp (Litopenaeus vannamei) fed compound diets Aquaculture 291 115-123

G li k l d 1980 id d i h i f i h f i h i i i b i j i f h l l iGarlick PJ McNurlan MA Preedy VR 1980 A rapid and convenient technique for measuring the rate of protein synthesis in tissues by injection of phenylalanine-H-3Biochem J 192 719ndash723

Hesslein RH Hallard KA Ramlal P 1993 Replacement of sulfur carbon and nitrogen in tissue of growing broad whitefish (Coregonus nasus) in response to a change in diet traced by 34S 13C and 15N Can J Fish Aquat Sci 50 2071ndash2076

Houlihan DF McCarthy ID Carter CG Marttin F 1995b Protein turnover and amino acid flux in fish larvae ICES Mar SciSymp 201 87ndash99

J i R K D tti C C i D J P t ll M C 2008 St bl b ( 13C) d it (15N) i t t l i di t f li d d f d i Pi t Jomori RK Ducatti C Carneiro DJ Portella MC 2008 Stable carbon (_13C) and nitrogen (15N) isotopes as natural indicators of live and dry food in Piaractus mesopotamicus (Holmberg 1887) larval tissue Aquac Res 39 370ndash381

McClelland JW Montoya JP 2002 Trophic relationships and the nitrogen isotopic composition of amino acids in plankton Ecology 83 2173-2180

McCullagh J Gaye-Siessegger J Focken U 2008 Determination of underivatized amino acid _13C by liquid chromatographyisotope ratio mass spectrometry for nutritional studies the effect of dietary non-essential amino acid profile on the isotopic signature of individual amino acids in fish Rap Commun Mass Spect 22 1817-1822

OrsquoB i D M B C L F l M L 2003 P ll f di i th b tt fl H li i h it i i t i id f ti l i id t f f ll t P R OrsquoBrien DM Boggs CL Fogel ML 2003 Pollen feeding in the butterfly Heliconius charitonia isotopic evidence for essential amino acid transfer from pollen to eggs P R Soc London B Bio 270 2631ndash2636

Saavedra M Beltran M Pousatildeo-Ferreira P Dinis MT Blasco J Conceiccedilatildeo LEC 2007 Evaluation of bioavailability of individual amino acids in Diplodus puntazzolarvae towards the ideal dietary amino acid profile Aquaculture 263 192ndash198

Schlechtriem C Focken U Becker K 2004 Stable isotopes as a tool for nutrient in larval fish feeding on live food Aquat Ecol 38 93-100