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Effect of temperature on the reproductive success, developmental rate and brood characteristics of Ips sexdentatus (Boern.)

hal.structure.identifierLaboratoire de Biologie des Ligneux et des Grandes Cultures [LBLGC]
dc.contributor.authorPINEAU, Xavier
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDAVID, Guillaume
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorPETER, Zsuzsanna
hal.structure.identifierLaboratoire de Biologie des Ligneux et des Grandes Cultures [LBLGC]
dc.contributor.authorSALLE, Aurélien
hal.structure.identifierLaboratoire de Biologie des Ligneux et des Grandes Cultures [LBLGC]
dc.contributor.authorBAUDE, Mathilde
hal.structure.identifierLaboratoire de Biologie des Ligneux et des Grandes Cultures [LBLGC]
dc.contributor.authorLIEUTIER, François
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorJACTEL, Herve
dc.date.issued2017
dc.identifier.issn1461-9555
dc.description.abstractEn1- Global warming is predicted to enhance the development rate and increase the number of generations in multivoltine insects. For secondary forest pests, such as the pine bark beetle Ips sexdentatus, the resulting increase in population level could trigger more frequent outbreaks. However, this positive effect could be outweighed by a temperature-dependent decrease in offspring quality.2- To test these hypotheses, we carried out a laboratory rearing experiment with maritime pine logs at six temperature regimes reproducing hourly fluctuations and averaging 12–25.5 °C. We estimated the thermal requirements for a complete development of the beetle and the number of offspring per female. The offspring quality was estimated using three traits: dry body weight, elytra length and lipid content.3- The minimum and maximum developmental threshold were estimated at 10.9 and 36 °C, respectively, and the thermal requirements for complete development were estimated at 517 degree-days. We predicted a mean of two generations per year in southwestern France, although an additional generation could occur during warmer years. The number of offspring increased exponentially with temperature, although we observed a curvilinear response of offspring traits to temperature, with optima at 15–18 °C.4- This suggests that there are trade-offs between productivity and quality of offspring. Global warming is therefore likely to result in higher number of generations of I. sexdentatus per year, with larger broods but of reduced fitness at high temperatures.
dc.language.isoen
dc.publisherWiley
dc.subjectscolyte
dc.subjectinsecte forestier
dc.subjectdendroctonus
dc.subjectinsecte ravageur
dc.subjectpinus
dc.subjectchangement climatique
dc.subject.enbark beetles
dc.subject.endevelopmental parameters
dc.subject.enlipid content
dc.subject.enoffspring quality
dc.subject.envoltinism
dc.subject.englobal change
dc.title.enEffect of temperature on the reproductive success, developmental rate and brood characteristics of Ips sexdentatus (Boern.)
dc.typeArticle de revue
dc.identifier.doi10.1111/afe.12177
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalAgricultural and Forest Entomology
bordeaux.page23-33
bordeaux.volume19
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01608190
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01608190v1
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