Les prises accessoires effectuees lors de la peche de la Civelle d'anguille (Anguilla anguilla L.), Etude preliminaire en Loire et en Vilaine.

The study of 41 samples, which were perfomed in the Loire and Vilaine estuaries, during elver fishing seasons 1979-80 and 1980-81, allowed us to define a rapid method of sample analysis in laboratory. The fish catches of one-year old and over were not abundant (eel, mullet, sprat, flounder, sole); on the other hand, larval stages of herring, flounder and also of mullet, sole and sprat were caught in large quantities. In addition, there were numerous catches of brown shrimp and species of trophic interest such as goby and macroplanktonic crustaceans. It is noteworthy that the by-catches are numerous during the fishing season.