Abstract
In this study, the effect of some biotic (total length, sex) and abiotic (sampling station and month) factors on the shell status (soft or hard) of Pontastacus leptodactylus were investigated in a natural crayfish population. The study was carried out in Hirfanlı Dam Lake (Central Anatolia), where one of the most important crayfish harvesting areas of Turkey, with a monthly basis between Jun-2017 and May-2018. Permutational multivariate analysis of variance (PERMANOVA) was used for the determination of the differences between nonparametric variables. A total of 5920 crayfish were checked, ultimately determined as 106 (1.79%) individuals with a soft shell and 5814 (98.21%) hard shell. Shell status was shown statistical difference with total length, stations, and sampling month (p<0.05), while it was no significant by sex group (p>0.05).
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