Effects of Different Hook Types on Post-Release Mortality and Catch Efficiency of Pikeperch Sander lucioperca (Linnaeus, 1758) in Seyhan Dam Lake, Adana, Türkiye

Authors : Serkan Akça, Alper Atılgan, Kenan Akman, Caner Enver Ozyurt

Pages : 173-182

Doi:10.46384/jmsf.1750358

View : 63 | Download : 161

Publication Date : 2025-12-22

Article Type : Research Paper

Abstract :This study investigated the effects of J and circle hook types on post-release mortality and catch efficiency of pikeperch in catch and release fishing. In fishing trials, a total of 56 pikeperch, ranging in size from 21 to 60 cm, were caught, and mortality rates were examined based on the hook type and the hooking location (deep or shallow in where the hooks were found inside the mouth). The water temperature at which the individuals were caught ranged from 21 °C to 32 °C. The results obtained showed that deep hooking caused higher mortality rates than shallow hooking for both hook types. Especially in deep hooking individuals with circle hooks, the mortality rate was close to 100%. Although the mortality rate was also high in deep hooking fishing with J-hooks, it was lower than that of circle hooks (83.33%). The mortality rates were lower for both hook types in shallow hooking (Circle: 25%, J: 6.6%). Logistic regression analysis revealed that while shallow hooking significantly increased the probability of survival (p 0.05). Furthermore, fish size and water temperature were not found to be parameters affecting mortality rate in this study (p>0.05). In terms of catch efficiency (CPUE), no statistically significant difference was found between the hook types (p>0.05). Seasonally, catch efficiency was found to be significantly higher in spring compared to summer months (p<0.05).
Keywords : Yakala-bırak balıkçılığı, Rekreasyonel balıkçılık, İğnenin takılma konumu, Çember iğne, J iğne, ölüm oranı

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