Non-consumptive effects of predation: does perceived risk strengthen the genetic integration of behaviour and morphology in stickleback?
Behavioural ecology
G-matrix evolution
evolutionary characters
functional integration
gene-environment interactions
modularity
morphology
personality
plasticity integration
predation
Journal
Ecology letters
ISSN: 1461-0248
Titre abrégé: Ecol Lett
Pays: England
ID NLM: 101121949
Informations de publication
Date de publication:
Jan 2020
Jan 2020
Historique:
received:
15
07
2019
revised:
23
08
2019
accepted:
29
09
2019
pubmed:
28
10
2019
medline:
18
12
2019
entrez:
25
10
2019
Statut:
ppublish
Résumé
Predators can shape genetic correlations in prey by altering prey perception of risk. We manipulated perceived risk to test whether such non-consumptive effects tightened behavioural trait correlations in wild-caught stickleback from high- compared to low-risk environments due to genetic variation in plasticity. We expected tighter genetic correlations within perceived risk treatments than across them, and tighter genetic correlations in high-risk than in low-risk treatments. We identified genetic variation in plasticity, with genetic correlations between boldness, sociality, and antipredator morphology, as expected, being tighter within treatments than across them, for both of two populations. By contrast, genetic correlations did not tighten with exposure to risk. Tighter phenotypic correlations in wild stickleback may thus arise because predators induce correlational selection on environmental components of these traits, or because predators tighten residual correlations by causing environmental heterogeneity that is controlled in the laboratory. Our study places phenotypic integration firmly into an ecological context.
Types de publication
Letter
Langues
eng
Sous-ensembles de citation
IM
Pagination
107-118Subventions
Organisme : Netherlands Organisation for Scientific Research
ID : 863.05.002
Organisme : Research Council of Norway
Organisme : US National Science Foundation
ID : 1557951
Informations de copyright
© 2019 The Author. Ecology Letters published by CNRS and John Wiley & Sons Ltd.
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