Temperature niche shift observed in a Lepidoptera population under allochronic divergence
| hal.structure.identifier | Universidade Técnica de Lisboa | |
| hal.structure.identifier | Centro de Estudos Florestais | |
| dc.contributor.author | SANTOS, Helena | |
| hal.structure.identifier | Universidade Técnica de Lisboa | |
| dc.contributor.author | PAIVA, M.R. | |
| hal.structure.identifier | Universidade Técnica de Lisboa | |
| dc.contributor.author | TAVARES, C. | |
| hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
| dc.contributor.author | KERDELHUE, Carole | |
| hal.structure.identifier | Universidade Técnica de Lisboa | |
| hal.structure.identifier | Centro de Estudos Florestais | |
| dc.contributor.author | BRANCO, Manuela | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 1010-061X | |
| dc.description.abstractEn | A process of adaptive divergence for tolerance to high temperatures was identified using a rare model system, consisting of two sympatric populations of a Lepidoptera (Thaumetopoea pityocampa) with different life cycle timings, a ‘mutant’ population with summer larval development, Leiria SP, and the founder natural population, having winter larval development, Leiria WP. A third, allopatric population (Bordeaux WP) was also studied. First and second instar larvae were experimentally exposed to daily-cycles of heat treatment reaching maximum values of 36, 38, 40 and 42 °C; control groups placed at 25 °C. A lethal temperature effect was only significant at 42 °C, for Leiria SP, whereas all temperatures tested had a significant negative effect upon Leiria WP, thus indicating an upper threshold of survival c.a. 6 °C above that of the WP. Cox regression model, for pooled heat treatments, predicted mortality hazard to increase for Leiria WP (+108%) and Bordeaux WP (+78%) in contrast to Leiria SP; to increase by 24% for each additional °C; and to decrease by 53% from first to second instar larvae. High variability among individuals was observed, a population characteristic that may favour selection and consequent adaptation. Present findings provide an example of ecological differentiation, following a process of allochronic divergence. Results further contribute to a better understanding of the implications of climate change for ecological genetics. | |
| dc.language.iso | en | |
| dc.publisher | Wiley | |
| dc.subject | INSECTE | |
| dc.subject | LÉPIDOPTÈRE | |
| dc.subject.en | THAUMETOPOEA PITYOCAMPA LEPIDOPTERA | |
| dc.subject.en | ADAPTATION | |
| dc.subject.en | CLIMATE | |
| dc.subject.en | INSECTS | |
| dc.subject.en | NICHE SHIFT | |
| dc.subject.en | SYMPATRIC SPECIATION | |
| dc.subject.en | PIN MARITIME | |
| dc.title.en | Temperature niche shift observed in a Lepidoptera population under allochronic divergence | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1111/j.1420-9101.2011.02318.x | |
| dc.subject.hal | Sciences du Vivant [q-bio]/Biodiversité/Evolution [q-bio.PE] | |
| bordeaux.journal | Journal of Evolutionary Biology | |
| bordeaux.page | 1897-1905 | |
| bordeaux.volume | 24 | |
| bordeaux.issue | 9 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02650143 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02650143v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Evolutionary%20Biology&rft.date=2011&rft.volume=24&rft.issue=9&rft.spage=1897-1905&rft.epage=1897-1905&rft.eissn=1010-061X&rft.issn=1010-061X&rft.au=SANTOS,%20Helena&PAIVA,%20M.R.&TAVARES,%20C.&KERDELHUE,%20Carole&BRANCO,%20Manuela&rft.genre=article |
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