Assessing the number of moored fishing aggregating devices through aerial surveys: A case study from Guadeloupe

Type Article
Date 2017-01
Language English
Author(s) Guyader Olivier1, Robert Bauer2, Reynal LionelORCID3
Affiliation(s) 1 : Univ Brest, IFREMER, CNRS, UMR 6308,AMURE,Unite Econ Maritime,IUEM, F-29280 Plouzane, France.
2 : IFREMER, UMR Marbec, Ave Jean Monnet,CS 30171, Sete, France.
3 : IFREMER, Unite Biodivers & Environm, Dept Ressources Biol & Environm RBE, Delegat Martinique, 79 Route Pointe Fort, Le Robert 97231, Martinique.
Source Fisheries Research (0165-7836) (Elsevier Science Bv), 2017-01 , Vol. 185 , P. 73-82
DOI 10.1016/j.fishres.2016.10.003
WOS© Times Cited 1
Keyword(s) Small-scale fisheries management, Dolphinfish, Yellowfin tuna, Aerial survey, Fish aggregating devices (FAD)
Abstract Moored fish aggregating devices (MFADs) are increasingly being used in small-scale tropical fisheries to access pelagic fish species that are otherwise difficult to harvest in large numbers. Little attention has yet been paid to monitoring MFADs in coastal areas, however. This is most likely due to the small-scale nature of most fisheries that utilize them and the presumed lower impact of those fisheries on fish stocks and their ecosystems. In this paper, we examined the abundance and density of MFADs around Guadeloupe, using aerial line transect surveys. Estimated MFAD densities were found to be high compared with previously reported densities in this area, especially within the 22–45 km range offshore. We examine and discuss possible reasons for these high densities. The main drivers appear to be the target species dolphinfish (Coryphaena hippurus) and yellowfin tuna (Thunnus albacares) and related fishing behaviour. We present different approaches for reducing and monitoring MFADs densities, including the co-management of MFAD territorial use rights by fishing communities.
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