Journal
FISHERIES MANAGEMENT AND ECOLOGY
Volume 10, Issue 6, Pages 377-384Publisher
BLACKWELL PUBLISHING LTD
DOI: 10.1111/j.1365-2400.2003.00354.x
Keywords
Anguilla; fishery; glass eel; migration; recruitment
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A glass eel fishery exists downstream of the Arzal estuarine dam in the Vilaine (Brittany, France). Catch statistics were collected between 1996 and 2000, and processed using a subsampling technique which allowed data from a reliable subsample to be extrapolated to the whole fishery. During the same period, glass eel migration into fresh water was monitored using a glass eel trap located on the dam - the upstream limit of the fishery. The analysis of glass eel biology and exploitation shows that the glass eel fishery is very intensive and that there was more or less no escapement during the fishing seasons studied. The proportion of the stock successfully migrating towards fresh water, as compared with the total catch is estimated to range between 0.3 and 3.9%. In such a fishery, the fishing effort affects the abundance. Consequently, the total catch has to be used instead of catch-per-unit-effort to estimate abundance.
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