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The age structure and growth rate of a native population of whitefish, Coregonus lavaretus lavaretus L., were analyzed on the basis of 66 specimens. The fishes were caught in autumn-winter 2000-2001 in Łebsko Lake. Fecundity estimates were calculated from a sample of 43 female ovaries. The age of the studied whitefish ranged from 2+ to 9+. Specimens aged 2+ predominated. In the first year of life...
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