Article (Scientific journals)
Temporal variability of settlement in Carapidae larvae at Rangiroa atoll
Colleye, Orphal; Brié, Christophe; Malpot, Emmanuel et al.
2007In Environmental Biology of Fishes, 81 (3), p. 277-285
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Keywords :
Symbiote; Otolith; Settlement pattern; Biotic and abiotic factors
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, <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.
Disciplines :
Zoology
Author, co-author :
Colleye, Orphal ;  Université de Liège - ULiège
Brié, Christophe
Malpot, Emmanuel
Vandewalle, Pierre ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive
Parmentier, Eric  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive
Language :
English
Title :
Temporal variability of settlement in Carapidae larvae at Rangiroa atoll
Publication date :
2007
Journal title :
Environmental Biology of Fishes
ISSN :
0378-1909
eISSN :
1573-5133
Publisher :
Springer Science & Business Media B.V., Netherlands
Volume :
81
Issue :
3
Pages :
277-285
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
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