Reference : Temporal variability of settlement in Carapidae larvae at Rangiroa atoll
Scientific journals : Article
Life sciences : Zoology
http://hdl.handle.net/2268/34829
Temporal variability of settlement in Carapidae larvae at Rangiroa atoll
English
Colleye, Orphal mailto [Université de Liège > > > >]
Brié, Christophe [> >]
Malpot, Emmanuel [> >]
Vandewalle, Pierre mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive >]
Parmentier, Eric mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive >]
2007
Environmental Biology of Fishes
Springer Science & Business Media B.V.
81
3
277-285
Yes (verified by ORBi)
International
0378-1909
Netherlands
[fr] Symbiote ; Otolith
[en] Settlement pattern
[fr] Biotic and abiotic factors
[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,
<br />several species (Carapus homei, Carapus mourlani, Carapus boraborensis and Encheliophis
<br />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
<br />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.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/34829
also: http://hdl.handle.net/2268/12686
10.1007/s10641-007-9199-4

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