The response of <i>Hyssopus pallidus</i> to hosts previously parasitised by <i>Ascogaster quadridentata</i>

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dc.contributor.authorZaviezo, T
dc.contributor.authorMills, N
dc.date.accessioned2025-01-21T01:30:58Z
dc.date.available2025-01-21T01:30:58Z
dc.date.issued2001
dc.description.abstract1. Two basic tenets of competition among parasitoids, that taxonomically distinct parasitoids are unable to discriminate against hosts that have previously been attacked by a competitor and that previous parasitism reduces the quality of a host, were tested by monitoring the oviposition response of Hyssopus pallidus, a gregarious ectoparasitoid, to healthy codling moth larvae and codling moth larvae that had previously been parasitised by a solitary endoparasitoid, Ascogaster quadridentata.
dc.description.abstract2, Hyssopus pallidus accepted both categories of host larva for oviposition when its competitor was constrained as a first-instar larva by the diapause development of its host, but discriminated against previously parasitised host larvae when its competitor was present as a larger larva in a non-diapausing host.
dc.description.abstract3. Hyssopus pallidus distinguished between the two categories of host larva by allocating twice as many eggs to host larvae previously parasitised by A. quadridentata, a response that was not influenced by previous oviposition experience.
dc.description.abstract4. The larger clutch sizes allocated to previously parasitised host larvae produced twice as many female progeny, each of a typical size, such that the total biomass was twice that produced from the smaller clutches laid on healthy host larvae. Possible confounding influences of host age and diapause are discounted.
dc.description.abstract5. These results demonstrate that interspecific discrimination does occur in H. pallidus and that host quality can be improved through previous parasitism by an endoparasitoid. Although interspecific discrimination appears rare among insect parasitoids, it may have been overlooked among ectoparasitoids and requires examination of the fitness consequences of interspecific interactions to clarify its adaptive significance.
dc.fuente.origenWOS
dc.identifier.issn0307-6946
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96945
dc.identifier.wosidWOS:000167235100011
dc.issue.numero1
dc.language.isoen
dc.pagina.final99
dc.pagina.inicio91
dc.revistaEcological entomology
dc.rightsacceso restringido
dc.subjectadult size
dc.subjectBraconidae
dc.subjectclutch size
dc.subjectCydia pomonella
dc.subjectEulophidae
dc.subjectinterspecific competition
dc.subject.ods02 Zero Hunger
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa02 Hambre cero
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleThe response of <i>Hyssopus pallidus</i> to hosts previously parasitised by <i>Ascogaster quadridentata</i>
dc.typeartículo
dc.volumen26
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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