SURVEY OF THE CATCHES OF ARTIC CHARR (SALVELINUS ALPINUS L.) SPAWNERS ON THE FRENCH SHORE OF LAKE LEMAN FROM 1982 TO 1987. FIRST DATA ON THE EFFICIENCY OF LAKE-RANCHING WITH CHARR.
SUMMARYThe paper présents the main characteristics of the catches of artic charr (Salvelinus alpinus) spawners on the deep spawning grounds of the French shore of Lake Léman from 1982 to 1987. A part of the smallest (3-5 cm) prefed fry stocked in Lake Léman during the summer 1983 has been marked. The survey of catches of spawners from 1985 to 1987 indicated that at least 50 % of catches (cohort 1983) are stocked fish. The value of charr for lake-ranching is discussed.
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