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Divergence and ontogenetic coupling of larval behaviour and thermal reaction norms in three closely related butterflies
Stockholm University, Faculty of Science, Department of Zoology.
Stockholm University, Faculty of Science, Department of Zoology.
Stockholm University, Faculty of Science, Department of Zoology.ORCID iD: 0000-0002-4560-6271
2011 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 278, no 1703, 313-320 p.Article in journal (Refereed) Published
Abstract [en]

Genetic trade-offs such as between generalist-specialist strategies can be masked by changes in compensatory processes involving energy allocation and acquisition which regulation depends on the state of the individual and its ecological surroundings. Failure to account for such state dependence may thus lead to misconceptions about the trade-off structure and nature of constraints governing reaction norm evolution. Using three closely related butterflies, we first show that foraging behaviours differ between species and change remarkably throughout ontogeny causing corresponding differences in the thermal niches experienced by the foraging larvae. We further predicted that thermal reaction norms for larval growth rate would show state-dependent variation throughout development as a result of selection for optimizing feeding strategies in the respective foraging niches of young and old larvae. We found substantial developmental plasticity in reaction norms that was species-specific and reflected the different ontogenetic niche shifts. Any conclusions regarding constraints on performance curves or species-differentiation in thermal physiology depend on when reaction norms were measured. This demonstrates that standardized estimates at single points in development, or in general, allow variation in only one ecological dimension, may sometimes provide incomplete information on reaction norm constraints.

Place, publisher, year, edition, pages
2011. Vol. 278, no 1703, 313-320 p.
Keyword [en]
temperature, developmental plasticity, environmental tolerance, ontogeny, co-adaptation, performance curve
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Research subject
URN: urn:nbn:se:su:diva-43770DOI: 10.1098/rspb.2010.1398ISI: 000285085600020PubMedID: 20719778OAI: diva2:359353
Swedish Research CouncilA multiscale, cross‐disciplinary approach to the study of climate change effect on ecosystem services and biodiversity

Published online before print August 18, 2010

Available from: 2010-10-27 Created: 2010-10-27 Last updated: 2014-10-28Bibliographically approved

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Berger, DavidFriberg, MagneGotthard, Karl
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