Factors influencing the evolution of clutch size in a gregarious insect parasitoid

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dc.contributor.authorZaviezo, T
dc.contributor.authorMills, N
dc.date.accessioned2024-01-10T12:38:57Z
dc.date.available2024-01-10T12:38:57Z
dc.date.issued2000
dc.description.abstract1. In this study we examined the clutch size of Hyssopus pallidus (Askew) (Hymenoptera, Eulophidae), a gregarious ectoparasitoid of codling moth (Lepidoptera, Tortricidae) larvae that is characterized by a host handling time of 2 days approximately.
dc.description.abstract2. Clutch size increased asymptotically with host larval size (fresh weight) to a maximum of 32 eggs. A single male developed from each clutch, brood survival was 83% and pupal size of female offspring was 0.45 mg, all independent of clutch size.
dc.description.abstract3. A comparison of the response of both experienced and naive adult parasitoids to varying host larval size, indicated that experience was not necessary for H. pallidus to be able to accurately estimate host size.
dc.description.abstract4. Clutch size increased by 50% for medium size host larvae (30-40 mg) and 83% for large host larvae (60-76 mg) when the encounter rate was reduced from one host every second day to one every seventh day. A significantly lower clutch size was produced on the last day at the highest encounter rate for large host larvae, suggesting exhaustion of the egg supply for H. pallidus.
dc.description.abstract5. Manipulation of parasitoid clutch size on constant size host larvae did not influence sex ratio (single male) or brood survival (93%), but produced a linear tradeoff between clutch size and the size (fresh weight) of female pupae Longevity, lifetime fecundity, total number of hosts attacked, and clutch size all increased linearly with the adult size (female pupal weight).
dc.description.abstract6. The observed clutch size in newly emerged H. pallidus is consistent with a strategy of maximizing lifetime fitness gain rather than the gain from individual hosts (Lack clutch size) despite a significant investment in the time required to attack each host.
dc.fechaingreso.objetodigital2024-05-02
dc.format.extent11 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1046/j.1365-2656.2000.00460.x
dc.identifier.eissn1365-2656
dc.identifier.issn0021-8790
dc.identifier.urihttps://doi.org/10.1046/j.1365-2656.2000.00460.x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77123
dc.identifier.wosidWOS:000166798000012
dc.information.autorucAgronomía e Ing. Forestal;Zaviezo T;S/I;62543
dc.issue.numero6
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final1057
dc.pagina.inicio1047
dc.publisherWILEY-BLACKWELL
dc.revistaJOURNAL OF ANIMAL ECOLOGY
dc.rightsacceso restringido
dc.subjectCydia pomonella
dc.subjectexperience
dc.subjecthost quality
dc.subjectsex ratio
dc.subjectsize
dc.subjectPTEROMALUS-PUPARUM HYMENOPTERA
dc.subjectREPRODUCTIVE STRATEGY
dc.subjectHOST SIZE
dc.subjectOVIPOSITION DECISIONS
dc.subjectSINGLE HOST
dc.subjectEGG NUMBER
dc.subjectBROOD SIZE
dc.subjectWASP
dc.subjectEULOPHIDAE
dc.subjectFITNESS
dc.subject.ods02 Zero Hunger
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa02 Hambre cero
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleFactors influencing the evolution of clutch size in a gregarious insect parasitoid
dc.typeartículo
dc.volumen69
sipa.codpersvinculados62543
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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