Abstract
The aim of this study was to identify some biological properties (sex distribution, length frequency distribution, weight frequency distribution, length-weight relationship and condition factor) of Prussian carp (Carassius gibelio), an invasive species in Bafra Fish Lakes (Samsun, Turkey). The study was carried out in Bafra Balık Lakes (Samsun) between January and December 2019. Fish sampling was done monthly and using trammel net. A total of 630 individuals (477 females, 153 males) were examined in the study and the female: male ratio was 1:0.32. The lengths and weights of the fish were measured between 8.6-28.0cm and 10.2-366.53g, respectively. Length-weight relationship for female, male and all sampled Prussian carp was calculated as W=0.0146L3,0423 (R2=0.98 n=477), W=0.016L3,0135 (R2=0.97 n=153) and W=0.0145L3,0347 (R2=0.96 n=630), respectively. The condition factor (CF) of female individuals (1.67±0.01) was higher than the male individuals (1.60±0.01) and the average CF value of all individuals was determined as 1.65±0.01.
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