Note sur la récolte du naissain d'huîtres dans le Morbihan - 1931

Based on the observation carried out on the three Morbihan rivers where oyster spat collection is conducted (Auray, Bono, Crac'h), it appears that in 1930 the quantity of spat which fixed on the collectors would have been greater than the previous year if some commercial factors had not lead the farmers to put aside a number of tiles and to not fix the broken ones. In the Auray River, as read on the graph (Mané-Verc'h observation spot), the water temperature becomes favourable from June 7th onwards. The mother-oysters, who had stayed white until this date, turned to a slate-grey colour.