Generalist-specialist trade-off during thermal acclimation.

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Etat: Serval
Version: Final published version
ID Serval
serval:BIB_F797C9D2BF71
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Generalist-specialist trade-off during thermal acclimation.
Périodique
Royal Society Open Science
Auteur(s)
Seebacher F., Ducret V., Little A.G., Adriaenssens B.
ISSN
2054-5703 (Electronic)
ISSN-L
2054-5703
Statut éditorial
Publié
Date de publication
2015
Peer-reviewed
Oui
Volume
2
Numéro
1
Pages
140251
Langue
anglais
Résumé
The shape of performance curves and their plasticity define how individuals and populations respond to environmental variability. In theory, maximum performance decreases with an increase in performance breadth. However, reversible acclimation may counteract this generalist-specialist trade-off, because performance optima track environmental conditions so that there is no benefit of generalist phenotypes. We tested this hypothesis by acclimating individual mosquitofish (Gambusia holbrooki) to cool and warm temperatures consecutively and measuring performance curves of swimming performance after each acclimation treatment. Individuals from the same population differed significantly in performance maxima, performance breadth and the capacity for acclimation. As predicted, acclimation resulted in a shift of the temperature at which maximal performance occurred. Within acclimation treatments, there was a significant generalist-specialist trade-off in responses to acute temperature change. Surprisingly, however, there was also a trade-off across acclimation treatments, and animals with greater capacity for cold acclimation had lower performance maxima under warm conditions. Hence, cold acclimation may be viewed as a generalist strategy that extends performance breadth at the colder seasons, but comes at the cost of reduced performance at the warmer time of year. Acclimation therefore does not counteract a generalist-specialist trade-off and, at least in mosquitofish, the trade-off seems to be a system property that persists despite phenotypic plasticity.
Mots-clé
performance curves, locomotor performance, performance breadth, individual variation, environmental variability
Pubmed
Web of science
Open Access
Oui
Création de la notice
21/06/2016 21:12
Dernière modification de la notice
09/05/2019 3:39
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