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Augmenta)ves on-farm releases of parasitoid wasps, Habrobracon hebetor for the biological control of the millet head miner Heliocheilus albipunctella - The parasitoids were released in 15 cm × 25 cm jute bags (+200 g of millet grains + 100 g of millet flour + 25 larvae of the rice moth Corcyra cephalonica (Stainton) + two mated H. hebetor females) - Parasitoid offspring’s escaped through the jute meshes and dispersed to parasiEze MHM larvae in millet fields - Up to 80% parasiEsm of MHM was recorded aMer augmentaEve releases (Fig 1) - To make the biological control program sustainable, parasitoids need to be available for every year use - Therefore, on-going opEons are to establish a coSage industry to scale up parasitoids producEon - Thus, parasitoid producEon needs to be opEmized to make the coSage industry viable and meet farmers needs - Since 2013 different experiments are being carried out to fine-tune and standardize rearing/releases techniques for H. hebetor for industrial use - Highest producEon of parasitoid is achieved when H. hebetor are given later larval stage of C. cephalonica to parasiEze - Honey and sugar soluEon are the best medium supporEng longest parasitoid lifespan (up to one month) for use in a Emer manner - OpEmal Eme for maEng, egg ferElizaEon, and highest progeny producEon is achieved when females are confined with males for 24h in 30ml capacity vial - Parasitoid numbers can be increased by 50% when adding a small proporEon of cowpea flour to the millet- based diet of C. cephalonica larvae - Different numbers of parasitoids were released in 24 villages in two districts of Niger in 2014 to idenEfy numbers needed per millet acreage for effecEve control of MHM - Releases of the parasitoids significantly increased the parasiEsm of MHM as compare to control villages (Fig 2) - Significantly higher parasiEsm was recorded in villages where 1600 parasitoid were released (Fig 2) The millet head miner (MHM), Heliocheilus albipunctella (de Joannis) (Lepidoptera: Noctuidae), is one of the key insect pest of pearl millet in the Sahel region. - Damage to the crop is due to larvae that feed on the panicle - Typical yield losses range from 40 to 85% - Different approaches, including cultural management, host plant resistance and use of pesEcides, have been tested with limited success and applicability - Natural parasiEsm of 64-95% due to Habrobracon (=Bracon) hebetor Say (Hymeoptera: Braconidae) is reported 0 20 40 60 80 Control 400 parasitoids 800 parasitoids 1600 parasitoids % Parasi)zed larvae Tera Maradi This work has been funded by the Sorghum and millet Innova)on lab (SMIL) and the McKnight founda)on. It has been undertaken as part of the CGIAR research program on Dryland Cereals. H. hebetor developing on larvae of MHM Developing larvae of MHM Releases of parasitoid with jute bags • INTRODUCTION • AUGMENTATIVES RELEASES • WAY FORWARD • RESULTS Discussions with farmers have established the “public good” nature of distribuEng the parasitoids. In other words, if one farmer adopts, his/her neighbours benefit which could affects willingness to adopt the technology. It appears that the soluEon is to establish community-based businesses that sell to farmers’ groups for the whole community in mulEple villages. MMH larvae parasiEzed by H. hebetor in villages covered by releases of H. hebetor and control villages in Burkina Faso and Niger MMH larvae parasiEzed by H. hebetor in villages covered by releases of different numbers of H. hebetor and control villages in two districts of Niger in 2015 1 Ba N.M., 2 Baoua I., 3 Kabore A., 4 Amadou L., 1 Karimoune L., 1 Salha H., 3 Dabire L.C., 5 Muniappan R. 1 ICRISAT-Niger; 2 University Maradi-Niger; 3 INERA-Burkina Faso; 4 INRAN-Niger, 5 Virginia Tech, USA 0 20 40 60 80 100 Burkina Faso Niger % parasi)zed larvae H. hebetor releases villages Control (no releases) Fig 1: Fig 2: • CONCLUSION

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Page 1: Augmentatives on-farm releases of parasitoid wasps, Habrobracon hebetor for the biological control of the millet head miner Heliocheilus albipunctella

Augmenta)veson-farmreleasesofparasitoidwasps,HabrobraconhebetorforthebiologicalcontrolofthemilletheadminerHeliocheilusalbipunctella

-  Theparasitoidswerereleasedin15cm×25cmjutebags(+200gofmilletgrains+100gofmilletflour+25larvaeofthericemothCorcyracephalonica(Stainton)+twomatedH.hebetorfemales)

-  Parasitoidoffspring’sescapedthroughthejutemeshesanddispersedtoparasiEzeMHMlarvaeinmilletfields

-  Upto80%parasiEsmofMHMwasrecordedaMeraugmentaEvereleases(Fig1)

-  To make the biological control program sustainable,parasitoidsneedtobeavailableforeveryyearuse

-  Therefore, on-going opEons are to establish a coSageindustrytoscaleupparasitoidsproducEon

-  Thus, parasitoid producEon needs to be opEmized tomake the coSage industry viable and meet farmersneeds

-  Since 2013 different experiments are being carried outtofine-tuneandstandardizerearing/releasestechniquesforH.hebetorforindustrialuse

-  Highest producEon of parasitoid is achieved when H.

hebetor aregiven later larval stageofC.cephalonica toparasiEze

-  Honey and sugar soluEon are the best mediumsupporEnglongestparasitoidlifespan(uptoonemonth)foruseinaEmermanner

-  OpEmal Eme for maEng, egg ferElizaEon, and highestprogeny producEon is achieved when females areconfinedwithmalesfor24hin30mlcapacityvial

-  Parasitoid numbers can be increased by 50% whenaddingasmallproporEonofcowpeaflourtothemillet-baseddietofC.cephalonicalarvae

-  Different numbers of parasitoids were released in 24villages in two districts of Niger in 2014 to idenEfynumbersneededpermilletacreageforeffecEvecontrolofMHM

-  Releases of the parasitoids significantly increased theparasiEsmofMHMascomparetocontrolvillages(Fig2)

-  Significantly higher parasiEsm was recorded in villageswhere1600parasitoidwerereleased(Fig2)

Themilletheadminer(MHM),Heliocheilusalbipunctella(deJoannis)(Lepidoptera:Noctuidae),isoneofthekeyinsectpestofpearlmilletintheSahelregion.-  Damagetothecropisdueto

larvaethatfeedonthepanicle-  Typicalyieldlossesrangefrom40

to85%-  Differentapproaches,including

culturalmanagement,hostplantresistanceanduseofpesEcides,havebeentestedwithlimitedsuccessandapplicability

-  NaturalparasiEsmof64-95%duetoHabrobracon(=Bracon)hebetorSay(Hymeoptera:Braconidae)isreported

0

20

40

60

80

Control 400parasitoids 800parasitoids 1600parasitoids

%Parasi)zedlarvae

Tera Maradi

ThisworkhasbeenfundedbytheSorghumandmilletInnova)onlab(SMIL)andtheMcKnightfounda)on.IthasbeenundertakenaspartoftheCGIARresearchprogramonDrylandCereals.

H.hebetordevelopingonlarvaeofMHM

DevelopinglarvaeofMHM

Releasesofparasitoidwithjutebags

•  INTRODUCTION

•  AUGMENTATIVESRELEASES

•  WAYFORWARD

•  RESULTS

Discussions with farmers have established the “publicgood” nature of distribuEng the parasitoids. In otherwords, if one farmer adopts, his/her neighbours benefitwhichcouldaffectswillingnesstoadoptthetechnology.ItappearsthatthesoluEonistoestablishcommunity-basedbusinesses that sell to farmers’ groups for the wholecommunityinmulEplevillages.

MMHlarvaeparasiEzedbyH.hebetorinvillagescoveredbyreleasesofH.hebetorandcontrolvillagesinBurkinaFasoandNiger MMHlarvaeparasiEzedbyH.hebetorinvillagescovered

byreleasesofdifferentnumbersofH.hebetorandcontrolvillagesintwodistrictsofNigerin2015

1BaN.M.,2BaouaI.,3KaboreA.,4AmadouL.,1KarimouneL.,1SalhaH.,3DabireL.C.,5MuniappanR.1ICRISAT-Niger;2UniversityMaradi-Niger;3INERA-BurkinaFaso;4INRAN-Niger,5VirginiaTech,USA

0

20

40

60

80

100

BurkinaFaso Niger

%parasi)zedlarvae

H.hebetorreleasesvillagesControl(noreleases)

Fig1:Fig2:

•  CONCLUSION

Gestion de la chenille mineuse de l'épi du mil par …oar.icrisat.org/10559/1/Gestion de la chenille mineuse de...Keywords: Millet / Heliocheilus albipunctella / biological control

EFFECT OF BACILLUS THURINGIENSIS BERLINER VAR. KURSTAKI … · Rearing of the parasitoid Adults of Habrobracon hebetor Say. (Hymenoptera: Braconidae), were collected from the CIPMC,

Int J Appl Earth Obs Geoinformation...biological control. The methodology was developed for the millet head miner (MHM), Heliocheilus albipunctella (de Joannis) (Lepidoptera: Noctuidae),

Habrobracon hebetor: effectiveness and - ICRISAToar.icrisat.org/7226/1/Ba_etal_Phytoparasitica_Biological_Post-print_2013.pdf · the millet head miner (MHM) Heliocheilus albipunctella

EFFECTS OF PARASITISM BY THE ECTOPARASITOID Bracon hebetor SAY (HYMENOPTERA: BRACONIDAE) ON HOST HEMOLYMPH PROTEINS OF THE MEDITERRANEAN FLOUR MOTH Ephestia

Mass Rearing and Augmentative Releases of Bracon hebetor to Suppress Indianmeal Moth, Plodia interpunctella Populations in Stored Wheat Mukti N. Ghimire

MEMOIRE DE FIN DE CYCLE - Logiciel de Bibliothèque ... · 2.1. Infestation de la mineuse de l'épide mil, Heliocheilus albipunctella De Joannis (Lepidoptera: Noctuidae) 42 2.2. Infestation