La mytiliculture dans le "Pertuis Breton": synthèse des travaux réalises de 1980 a 1992

The studies carried out between 1980 and 1992 in the "Pertuis Breton" showed that mussels growth was systematically reduced near the coastline for an identical immersion time. No relationship was established between current pattern, stocking biomass and growth results. In contrast, poor growth was strongly correlated to seawater quality and especially to high seston load. The author suggests further studies which could confirm and complement these results: a better environment understanding through data acquisition, inclusion of additional parameters, studies on factors affecting shellfish quality. Furthermore, specific studies are proposed which are aimed at optimising mussel production in the Pertuis Breton. This includes a constant spat recruitment strategy and achieving an optimal growth. Moreover, maximum growable stocking biomass should be known so that it does not interfere with existing activities like oyster farming or fisheries.