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Rôle du macrobenthos dans l'alimentation des poissons démersaux vivant sur les fonds de sédiments fins de la Manche occidentale = The effects of macrobenthos on the feeding of demersal fishes living in fine sand from western English Channel, (in Morlaix Bay)
Dauvin, J.-C. (1988). Rôle du macrobenthos dans l'alimentation des poissons démersaux vivant sur les fonds de sédiments fins de la Manche occidentale = The effects of macrobenthos on the feeding of demersal fishes living in fine sand from western English Channel, (in Morlaix Bay). Cah. Biol. Mar. 29(4): 445-467
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
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    Marine

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  • Dauvin, J.-C., more

Abstract
    The importance of the predation by demersal fishes of the fine sand community from the Bay of Morlaix has been studied by analysis of stomach contents in relation to the study of the macrobenthic fauna. The demersal fishes are not abundant on this bottom. Trisopterus minutus, Callionymus lyra and Echiichthys vipera are the most important benthic fishes. The analysis of the stomach contents of the 13 main species shows that the fishes feed on the macrobenthic fauna especially crustacean amphipods. Polychaetes and bivalves are only secondary preys. Trawls have been executed before and after the Amoco Cadiz oil spill with and without important Ampelisca populations. So this study shows that the fishes adapt their food items in relation to the available preys. The predation by the fishes is weak in comparison with the production of the macrobenthic community.

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