||Laurans Martial1, Fifas Spyros1, Demaneche Sebastien1, Brerette Stéphane1, Debec Olivier
||1 : IFREMER, F-29280 Plouzane, France.
||ICES Journal of Marine Science (1054-3139) (Oxford university press), 2009-10 , Vol. 66 , N. 9 , P. 1892-1898
|WOS© Times Cited
||Self sampling, Homarus gammarus, Functional maturity, Catchability
||Fishers from Le Croisic (France) measure all the lobsters (Homarus gammarus) they capture, indicating their sex and whether the females are ovigerous or non-ovigerous. Between 2003 and 2006 and mainly between April and September, 16 884 lobsters were measured in this manner. These self-sampled data were used to study catchability and functional maturity of lobsters. The sex ratio was 50%, and catchability did not change if a female was ovigerous or non-ovigerous. With the help of a logistic function, a relationship was established between body size and the proportion of ovigerous females. For the study area, 100% of the females were mature upon reaching a carapace length (CL) of 115 mm, and the proportion of ovigerous females reached 70% each year. The L50 value evolved over a CL of 103106 mm. From the size when 100% of the females matured (115 mm), there was a larger proportion of ovigerous females than in other studies carried out in more northern European areas.