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Gillnet selectivity for freshwater fish species in three lentic systems of G reece
Author(s) -
Petriki O.,
Erzini K.,
Moutopoulos D. K.,
Bobori D. C.
Publication year - 2014
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.12476
Subject(s) - biology , lake ecosystem , fishery , fish <actinopterygii> , freshwater fish , zoology , ecology , ecosystem
Summary Gillnet size selectivity was studied for freshwater fish species, based on experimental fishing trials carried out with multimesh gillnets in lentic freshwater systems in N orthern G reece. Selectivity estimates were based on a large range of mesh sizes, i.e. more than 10 different mesh sizes ranging from 8 to 90 mm bar length. Results showed that the model, in which both mean and standard deviation of the curve were defined as a linear function of the mesh size, revealed the best fit. For seven (i.e. Α lburnus sp. V olvi, A spius aspius , C arassius gibelio , L epomis gibbosus , P achychilon macedonicum , S qualius prespensis and V imba melanops ) of the 11 studied species and the hybrid ( A lburnus belvica × R utilus prespensis ), gillnet selectivity parameters were estimated for the first time, contributing to the evaluation of gillnet fisheries' impacts on fish species populations and consequently to fisheries management and species conservation.