genetic selection programs in shellfish and shrimp species

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Genetic Selection Programs in Shellfish and Shrimp Species Ana Catarina Silva nº 29817 Joana Marques nº29824 Paulo Mira Fernandes nº 29830

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Genetic Selection Programs in Shellfish and Shrimp Species. Ana Catarina Silva n º 29817 Joana Marquesnº29824 Paulo Mira Fernandes n º 29830 . Why Genetic selection is a important tool for Aquaculture?. Growth improvement Disease resistance Survival rate . Introduction. - PowerPoint PPT Presentation

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Page 1: Genetic Selection Programs in Shellfish and Shrimp Species

Genetic Selection Programs in Shellfish and

Shrimp SpeciesAna Catarina Silva nº 29817

Joana Marques nº29824

Paulo Mira Fernandes nº 29830

Page 2: Genetic Selection Programs in Shellfish and Shrimp Species

Why Genetic selection is a important tool for Aquaculture?

Growth improvement

Disease resistance

Survival rate

Breeding Programs

Intro

duct

ion

Page 3: Genetic Selection Programs in Shellfish and Shrimp Species

Shrimp

Grow

th Im

prov

emen

t

Argue et al. 2002 Litopenaeus vannamei

Randomly selected fast-growers

Growth Disease Resistance

Li et al. 2006 and Moss et al. 2007

Fenneropenaaeus chinensis and Litopenaeus vannamei

Page 4: Genetic Selection Programs in Shellfish and Shrimp Species

Shrimp

Dise

ase

resis

tanc

eLi et al. 2006 Fenneropenaeus chinensisMass selection

Selected for Taura Syndrome Virus (one gene resistance)

Lacks selection for polygenic resistance to other viruses (WSSV)

Page 5: Genetic Selection Programs in Shellfish and Shrimp Species

Oysters

Grow

th Im

prov

emen

t

VIMS, 2010 Crassostrea virginica

Kinsale LynnhavenYork

Over time, triploid individuals presented a higher growth rate

Environmental conditions?

Growth energy budget?

Page 6: Genetic Selection Programs in Shellfish and Shrimp Species

Oysters

Dise

ase

Resis

tanc

eVIMS, 2010 Crassostrea virginica

Page 7: Genetic Selection Programs in Shellfish and Shrimp Species

Oysters

Surv

ival

Rat

e

Kinsale LynnhavenYork

VIMS, 2010 Crassostrea virginica

Over time, triploid individuals presented a higher survival rate

Higher tolerance to salinity?

Page 8: Genetic Selection Programs in Shellfish and Shrimp Species

Clams

Grow

th Im

prov

emen

t

El-Wazzan and Scarpa, 2009 Mercenaria mercenaria notata

Triploid species may be considered almost sterile.

Can tripoidy be an advantage to the improvement of growth?

14 and 15-18 weeks old clams

Triploid individuals grew less than diploid.

But,

Under stressful conditions triploid clams may present better growth rates.

Page 9: Genetic Selection Programs in Shellfish and Shrimp Species

Clams

Grow

th Im

prov

emen

t

El-Wazzan and Scarpa, 2009

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