ORBi: Colleye Orphal - Temporal variability of settlement in Carapidae larvae at Rangiroa atoll

Reference : Temporal variability of settlement in Carapidae larvae at Rangiroa atoll


	Document type :	Scientific journals : Article
	Discipline(s) :	Life sciences : Zoology
	To cite this reference:	http://hdl.handle.net/2268/34829

Title :	Temporal variability of settlement in Carapidae larvae at Rangiroa atoll
Language :	English
Author, co-author :	Colleye, Orphal [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive >]
	Brié, Christophe [ > > ]
	Malpot, Emmanuel [ > > ]
	Vandewalle, Pierre [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive >]
	Parmentier, Eric [Université de Liège - ULG > Sciences et gestion de l'environnement > Morphologie Fonctionnelle et Evolutive > >]
Publication date :	Mar-2008
Journal title :	Environmental Biology of Fishes
Publisher :	Springer Science & Business Media B.V.
Volume :	81
Issue/season :	3
Pages :	277-285
Audience :	International
ISSN :	0378-1909
Country :	Netherlands
Keywords :	[en] Settlement pattern
	[fr] Biotic and abiotic factors ; Otolith ; Symbiote
Abstract :	[en] Carapidae (or pearlfish) are eel-like fishes living inside different invertebrates, such as holothurians, sea stars or bivalves. In some Polynesian areas where they live in sympatry, several species (Carapus homei, Carapus mourlani, Carapus boraborensis and Encheliophis gracilis) are able to inhabit the same host species. The heterospecific infestation rate is very rare, suggesting that the four species can compete for their hosts. Some differences in settlement period, breeding period and in pelagic larval duration (PLD) could allow better characterisation of the life history of each species. More than 700 larvae were collected during an entire year on the Rangiroa atoll (French Polynesia). Each species was identified; their settlement pattern was examined and their PLD was deduced from otolith (sagittae) increments. In the four collected species, the settlement pattern differed: C. homei and C. mourlani settle on the reef during the entire year, and show an asynchronous and diffuse breeding cycle. C. boraborensis and E. gracilis have a shorter settlement period which could be compatible with breeding synchronisation. As most reef fishes, Carapidae larvae mainly settle during moonless nights. Moreover, each species presents some plasticity, allowing it to settle on the reef under suitable conditions.
Target :	Researchers ; Students
Permalink :	http://hdl.handle.net/2268/34829
DOI :	10.1007/s10641-007-9199-4

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