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Census (NC) and genetically effective (Ne) population size in a lake-resident population of brown trout Salmo trutta

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Tel.: +46 8 16 42 79; email: johan.charlier@zoologi.su.se

Abstract

Census (NC) and effective population size (Ne) were estimated for a lake-resident population of brown trout Salmo trutta as 576 and 63, respectively. The point estimate of the ratio of effective to census population size (Ne:NC) for this population is 0·11 with a range of 0·06–0·26, suggesting that Ne:NC ratio for lake-resident populations agree more with estimates for fishes with anadromous life histories than the small ratios observed in many marine fishes.

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