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Effect of heat waves on embryo mortality in the pine processionary moth

hal.structure.identifierInstituto Superior de Agronomia [Lisboa] [ISA]
dc.contributor.authorROCHA, Susana
hal.structure.identifierCentre de Biologie pour la Gestion des Populations [UMR CBGP]
dc.contributor.authorKERDELHUE, Carole
hal.structure.identifierInstitut National de Recherche en Génie Rural Eaux et Forêts [INRGREF]
dc.contributor.authorBEN JAMAA, M. L.
hal.structure.identifierInstitut National de Recherche en Génie Rural Eaux et Forêts [INRGREF]
dc.contributor.authorDHAHRI, S.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBURBAN, Christian
hal.structure.identifierInstituto Superior de Agronomia [Lisboa] [ISA]
dc.contributor.authorBRANCO, Manuela
dc.date.issued2017
dc.identifier.issn0007-4853
dc.description.abstractEnExtreme climate events such as heat waves are predicted to become more frequent with climate change, representing a challenge for many organisms. The pine processionary moth Thaumetopoea pityocampa is a Mediterranean pine defoliator, which typically lays eggs during the summer. We evaluated the effects of heat waves on egg mortality of three populations with different phenologies: a Portuguese population with a classical life cycle (eggs laid in summer), an allochronic Portuguese population reproducing in spring, and a Tunisian population from the extreme southern limit of T. pityocampa distribution range, in which eggs are laid in fall. We tested the influence of three consecutive hot days on egg survival and development time, using either constant (CT) or daily cycling temperatures (DT) with equivalent mean temperatures. Maximum temperatures (T max) used in the experiment ranged from 36 to 48°C for DT and from 30 to 42°C for CT. Heat waves had a severe negative effect on egg survival when T max reached 42°C for all populations. No embryo survived above this threshold. At high mean temperatures (40°C), significant differences were observed between populations and between DT and CT regimes. Heat waves further increased embryo development time. The knowledge we gained about the upper lethal temperature to embryos of this species will permit better prediction of the potential expansion of this insect under different climate warming scenarios.
dc.language.isoen
dc.publisherCambridge University Press (CUP)
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.subjectpyrale
dc.subjectprocessionnaire du pin
dc.subjectthaumetopoea pityocampa
dc.subjectchangement climatique
dc.subjecttaux de mortalite
dc.subjectportugal
dc.subjectforêt méditerranéenne
dc.subject.enclimate change
dc.subject.enegg tolerance
dc.subject.enheat wave
dc.subject.entemperature
dc.subject.enprocessionary caterpillar
dc.subject.englobal change
dc.subject.enmortality rate
dc.title.enEffect of heat waves on embryo mortality in the pine processionary moth
dc.typeArticle de revue
dc.identifier.doi10.1017/S0007485317000104
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalBulletin of Entomological Research
bordeaux.page1-9
bordeaux.volumeonline fisrt
bordeaux.peerReviewedoui
hal.identifierhal-01605097
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01605097v1
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