Reference : Colour differentiation in a coral reef fish throughout ontogeny: habitat background and ...
Scientific journals : Article
Life sciences : Zoology
http://hdl.handle.net/2268/71435
Colour differentiation in a coral reef fish throughout ontogeny: habitat background and flexibility
English
Frederich, Bruno mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement >]
Mills, Suzanne C. [> >]
Denoël, Mathieu mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale >]
Parmentier, Eric mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive >]
Brié, Christophe [> >]
Santos, Raphaël [> >]
Waqalevu, Viliame Pita [> >]
Lecchini, David [> >]
2010
Aquatic Biology
Inter-Research
9
3
271-277
Yes (verified by ORBi)
International
1864-7782
1864-7790
Oldendorf/Luhe
Germany
[en] colour morph ; Chrysiptera leucopoma ; Environmental factors
[en] Colour polymorphism is widespread in animals but, in contrast to other types of polymorphism, has been little explored during ontogeny. Among coral reef fish, the surge damselfish Chrysiptera leucopoma settles in the larval stage as a yellow morph, whereas 2 colour morphs (yellow and brown) are apparent in adults at Rangiroa Atoll, French Polynesia. To understand this dimorphism, we tested, under controlled conditions, the hypotheses that: (1) environmental cues (habitat background and conspecific density) play important roles in morph differentiation during ontogeny and (2) morph colouration is reversible. Our first experiment showed that a dark habitat background induced the formation of the brown morph, while C. leucopoma larvae kept their yellow morph when placed in aquaria with a bright habitat background. Colour change from yellow to brown also occurred within the bright habitat, but only at high conspecific densities. Our second experiment showed that colour change was reversible within 15 d post-settlement, but not at the adult stage. Overall, our results highlighted that the studied polymorphism may be environmentally induced and reversible during the first post-settlement days of this coral reef fish.
La Communauté Française de Belgique (Concours des bourses de voyage 2007) ; Coral Reef Initiative in the South Pacific Program (C2A) ; Agence Nationale de la Recherche (ANR) (ANR-06-JCJC-0012-01)
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/71435
10.3354/ab00257

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