Blackfin tuna (Thunnus atlanticus) fishing around FADs in Martinique (French West Indies)

Type Publication
Date 2000-07
Language English
Copyright 2000 Ifremer/CNRS/INRA/IRD/Cemagref/Éditions scientifiques et médicales Elsevier SAS
Author(s) Taquet Marc, Reynal LionelORCID, Laurans Martial, Lagin Alain-Sabin
Affiliation(s) Ifremer Martinique, Le Robert 97231, Martinique.
Source Aquatic Living Resources (0990-7440) (Elsevier), 2000-07 , Vol. 13 , N. 4 , P. 259-262
DOI 10.1016/S0990-7440(00)01056-1
WOS© Times Cited 4
Keyword(s) Martinique, West Central Atlantic, Experimental fishing survey, Biology, FAD, Fish aggregating device, Thunnus atlanticus, Blackfin tuna
Abstract This paper examines the fishing of blackfin tuna (Thunnus atlanticus) around Fish Aggregating Devices (FADs) in Martinique (French West Indies). It is based on the compared analysis of catches from monthly experimental fishing surveys and sampling of commercial landings. The data collected in these two different ways allowed comparison of blackfin tuna length frequencies. A large part of the commercial landings were made up of young immature tuna with a fork length of less than 40 cm, whereas the experimental longline catches were mainly made up of fish with a fork length ranging between 55 and 75 cm. We give evidence that these discrepancies were mostly due to the fishing technique used. Indeed, contrarily to the experimental surveys, Martinican fishermen only fish during daytime and usually on the surface by trolling. This way, fishermen do not have access to the largest fish, which are found deeper. Out results suggested that a new fishing technique such as vertical longlining, could improve commercial catches of big blackfin tuna under FADs. (C) 2000 Ifremer/CNRS/INRA/IRD/Cemagerf/Editions scientifiques et medicales Elsevier SAS.
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