Abstract
AbstractSamples of approximately 11,000 eels were used to analyse the size class composition of the eel stock in Lake Constance (Bodensee). The main statistical approach was to separate a ‘stock dependent fraction’ within the length frequency distributions obtained from three different traps and two electrofishing methods.From the calculated size class proportions an average total mortality of 28.5% was estimated for eels bigger than 50 cm opposed to 26% total mortality for the unfished part of the population.
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