Evaluation annuelle du stock de coquilles Saint-Jacques de la baie de Seine : résultats de la campagne COMOR 40 (30 juin - 17 juillet 2010). Perspectives et recommandations pour une pêcherie durable.

The main aim of King scallops Pecten maximus stock assessment French surveys in the Bay of Seine (COMOR) is to set an annual primary diagnosis of the state of the resource (abundance by age classes, growth, distribution on the seabed) before the opening of the fishing season. For twenty years, the survey takes place in July, best compromise between enough growing of the group 1 shells, faster in the Bay of Seine than in the Saint-Brieuc Bay, allowing their capture by sampling dredges, and early expertise which allows to stakeholders (administrative, market organization, professional committee, ...) to take the best measures suited to the reality perceived through the survey’s results. The results are presented in distinguishing the off-shore part of the Bay of Seine, located beyond the French territorial waters, and the classified Seine Bay, entirely located inside the territorial waters and subjected to highly regulation of fisheries. In July 2010, the estimations of the exploitable biomass are very different between the two parts of the bay of Seine, medium in the off-shore part and quite good in the classified bay of Seine situated inside the twelve nautic miles limit. The status of the stock seems increasing in the inshore part, but shows signs of overexploitation outside. The pre-recruitment (one year old scallops born in 2009) is low outside, but very good inside.