Climate variation alters the synchrony of host-parasitoid interactions

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dc.contributor.authorWetherington, Miles T.
dc.contributor.authorJennings, David E.
dc.contributor.authorShrewsbury, Paula M.
dc.contributor.authorDuan, Jian J.
dc.date.accessioned2025-01-23T21:25:07Z
dc.date.available2025-01-23T21:25:07Z
dc.date.issued2017
dc.description.abstractObserved changes in mean temperature and increased frequency of extreme climate events have already impacted the distributions and phenologies of various organisms, including insects. Although some research has examined how parasitoids will respond to colder temperatures or experimental warming, we know relatively little about how increased variation in temperature and humidity could affect interactions between parasitoids and their hosts. Using a study system consisting of emerald ash borer (EAB), Agrilus planipennis, and its egg parasitoid Oobius agrili, we conducted environmentally controlled laboratory experiments to investigate how increased seasonal climate variation affected the synchrony of host-parasitoid interactions. We hypothesized that increased climate variation would lead to decreases in host and parasitoid survival, host fecundity, and percent parasitism (independent of host density), while also influencing percent diapause in parasitoids. EAB was reared in environmental chambers under four climate variation treatments (standard deviations in temperature of 1.24, 3.00, 3.60, and 4.79 degrees C), while O.agrili experiments were conducted in the same environmental chambers using a 4x3 design (four climate variation treatmentsx3 EAB egg densities). We found that EAB fecundity was negatively associated with temperature variation and that temperature variation altered the temporal egg laying distribution of EAB. Additionally, even moderate increases in temperature variation affected parasitoid emergence times, while decreasing percent parasitism and survival. Furthermore, percent diapause in parasitoids was positively associated with humidity variation. Our findings indicate that relatively small changes in the frequency and severity of extreme climate events have the potential to phenologically isolate emerging parasitoids from host eggs, which in the absence of alternative hosts could lead to localized extinctions. More broadly, these results indicate how climate change could affect various life history parameters in insects, and have implications for consumer-resource stability and biological control.
dc.fuente.origenWOS
dc.identifier.doi10.1002/ece3.3384
dc.identifier.issn2045-7758
dc.identifier.urihttps://doi.org/10.1002/ece3.3384
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101323
dc.identifier.wosidWOS:000413308700035
dc.issue.numero20
dc.language.isoen
dc.pagina.final8587
dc.pagina.inicio8578
dc.revistaEcology and evolution
dc.rightsacceso restringido
dc.subjectAgrilus planipennis
dc.subjectbiological control
dc.subjectclimate change
dc.subjectdiapause
dc.subjectOobius agrili
dc.subjectparasitism
dc.subjectphenology
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleClimate variation alters the synchrony of host-parasitoid interactions
dc.typeartículo
dc.volumen7
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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