Article (Scientific journals)
Morphological and genetic divergences in a coral reef damselfish, Pomacentrus coelestis
Frederich, Bruno; Liu, S.-Y. Vanson; Dai, C.-F.
2012In Evolutionary Biology, 39 (3), p. 359-370
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Keywords :
Pomacentridae; Geometric morphometrics; jaw shape; PROTEST; phenotypic plasticity; adaptive divergence
Abstract :
[en] Population differentiation is one of the main topics in evolutionary biology. Except the exploration of color variation, few studies focused on morphological divergences among populations of coral reef fishes. In this work, we studied morphological and genetic differentiation among populations of the damselfish, Pomacentrus coelestis, in the northwestern Pacific Ocean. The shapes of the mandible and the premaxilla were explored using geometric morphometric methods and the genetic structure was investigated using microsattelites. Various tests revealed significant shape variation among most P. coelestis populations for both skeletal units. Morphological variation of the mandible accompanies a genetic break between populations of mainland Japan and Okinawa-Taiwan. However, Mantel and Procrustes tests revealed no congruence between morphological and genetic structures. We illustrate that phenotypic plasticity and adaptive divergence are potential evolutionary mechanisms underlying shape difference among P. coelestis populations. An ecomorphological approach suggests that various diet could be related to shape variation of oral jaws.
Research Center/Unit :
AFFISH-RC - Applied and Fundamental FISH Research Center - ULiège
Disciplines :
Zoology
Author, co-author :
Frederich, Bruno  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Morphologie fonctionnelle et évolutive
Liu, S.-Y. Vanson
Dai, C.-F.
Language :
English
Title :
Morphological and genetic divergences in a coral reef damselfish, Pomacentrus coelestis
Publication date :
September 2012
Journal title :
Evolutionary Biology
ISSN :
0071-3260
eISSN :
1934-2845
Publisher :
Springer Science & Business Media B.V.
Volume :
39
Issue :
3
Pages :
359-370
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
National Science Council (Taiwan) NSC95-2611-M002-011- MY3
Available on ORBi :
since 16 January 2012

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