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| Doray, Mathieu; Josse, E; Gervain, P; Reynal, Lionel; Chantrel, Josselin. |
| From April 2003 to April 2004 monthly sea surveys were conducted around 2 fish aggregating devices (FADs) moored at 2000 and 2500 m depth in Martinique (Lesser Antilles). The use of a dual frequency splitbeam echosounder combined with an underwater camera and fishing methods allowed assessment of average space and time distribution of pelagic fish aggregated beneath the FADs, as well as identification of their overall size and species composition. At daytime, 4 fish aggregations were identified at each FAD, representing 4 distinct types: i) an aggregation of small juvenile tuna (mean fork length, FL: 30 cm) observed very close to the surface in 25% of daytime periods; ii) a small surface aggregation dominated by carangids, Caranx crysos, present in 65% of... |
| Tipo: Text |
Palavras-chave: Lesser Antilles; Tuna; Aggregative behaviour; Small scale fishery; Underwater video; Acoustics; Fish aggregating device. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3634.pdf |
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