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Parasitoid and host egg ages have independent impact on various biological traits in a Trichogramma species

hal.structure.identifierInstitut Sophia Agrobiotech [ISA]
dc.contributor.authorPIZZOL, Jeannine
hal.structure.identifierInstitut Sophia Agrobiotech [ISA]
dc.contributor.authorDESNEUX, Nicolas
hal.structure.identifierInstitut Sophia Agrobiotech [ISA]
dc.contributor.authorWAJNBERG, Eric
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorTHIERY, Denis
dc.date.accessioned2024-04-08T12:31:08Z
dc.date.available2024-04-08T12:31:08Z
dc.date.issued2012
dc.identifier.issn1612-4758
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197059
dc.description.abstractEnTrichogramma (Hymenoptera: Trichogrammatidae) are species used worldwide for the biological control of Lepidopteran pests, notably through inundative releases on millions of hectares. The optimal use of Trichogramma parasitoids in crop protection requires an accurate knowledge of their biology. More specifically, the importance of age factor in parasitoids during the time they forage in crops for host eggs (after initial release) and how the aging of host eggs could impact parasitoid biological traits may be important for overall efficiency in terms of crop protection. In this context, the importance of parasitoid female and host egg ages on parasitism rate and the development of offspring was studied in laboratory conditions on Trichogramma cacoeciae Marchal (Hymenoptera: Trichogrammatidae) and the eggs of the pest Lobesia botrana Denis and Schiffermüller (Lepidoptera: Tortricidae). Host eggs tested were 1–2- and 3–4-day-old, while the ages of T. cacoeciae adult females varied from 1-day-old to 4-day-old post-emergence. When L. botrana eggs were 3–4-day-old, they were less parasitized by T. cacoeciae than 1–2-day-old eggs, and this was not linked to the age of T. cacoeciae females. The age of parasitoid females has an effect on parasitism, as 1-day-old females produced fewer parasitized eggs than 2, 3, and 4-day-old females. For the total number of L. botrana eggs killed by T. cacoeciae, the two factors did not show significant effects. When L. botrana eggs were 1–2-day-old, parasitoid emergence increased according to the age of parasitoid females with the highest success observed for 3-day-old females. The lowest emergence rates were obtained with T. cacoeciae females 1-day-old. The development time was also longer with the young 1-day-old parasitoid females. This study demonstrated that both the aging of parasitoids and host eggs play a role in the subsequent development of parasitoid offspring. The importance of these results in the context of biological control programs involving Trichogramma parasitoids is discussed.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subjectparasitism
dc.subjectparasitoid age
dc.subject.enLobesia botrana
dc.subject.enTrichogramma cacoeciae
dc.subject.endevelopment
dc.subject.enhost age
dc.title.enParasitoid and host egg ages have independent impact on various biological traits in a Trichogramma species
dc.typeArticle de revue
dc.identifier.doi10.1007/s10340-012-0434-1
dc.subject.halSciences du Vivant [q-bio]/Microbiologie et Parasitologie/Parasitologie
bordeaux.journalJournal of Pest Science
bordeaux.page489-496
bordeaux.volume85
bordeaux.hal.laboratoriesSanté et Agro-Ecologie du Vignoble (SAVE) - UMR 1065*
bordeaux.issue4
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02648142
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02648142v1
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