Trophic specialization influences the rate of environmental niche evolution in damselfishes (Pomacentridae).

Détails

ID Serval
serval:BIB_62E8928EC9DF
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Trophic specialization influences the rate of environmental niche evolution in damselfishes (Pomacentridae).
Périodique
Proceedings of the Royal Society of London B Biological Sciences
Auteur(s)
Litsios G., Pellissier L., Forest F., Lexer C., Pearman P.B., Zimmermann N.E., Salamin N.
ISSN
1471-2954 (Electronic)
ISSN-L
0962-8452
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
279
Numéro
1743
Pages
3662-3669
Langue
anglais
Résumé
The rate of environmental niche evolution describes the capability of species to explore the available environmental space and is known to vary among species owing to lineage-specific factors. Trophic specialization is a main force driving species evolution and is responsible for classical examples of adaptive radiations in fishes. We investigate the effect of trophic specialization on the rate of environmental niche evolution in the damselfish, Pomacentridae, which is an important family of tropical reef fishes. First, phylogenetic niche conservatism is not detected in the family using a standard test of phylogenetic signal, and we demonstrate that the environmental niches of damselfishes that differ in trophic specialization are not equivalent while they still overlap at their mean values. Second, we estimate the relative rates of niche evolution on the phylogenetic tree and show the heterogeneity among rates of environmental niche evolution of the three trophic groups. We suggest that behavioural characteristics related to trophic specialization can constrain the evolution of the environmental niche and lead to conserved niches in specialist lineages. Our results show the extent of influence of several traits on the evolution of the environmental niche and shed new light on the evolution of damselfishes, which is a key lineage in current efforts to conserve biodiversity in coral reefs.
Mots-clé
trophic specialization, environmental niche, phylogenetic niche conservatism, evolutionary rate heterogeneity, evolutionary model
Pubmed
Web of science
Open Access
Oui
Création de la notice
11/06/2012 7:44
Dernière modification de la notice
20/08/2019 14:19
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