Çanakkale Boğazı Kıyılarında Serbest Dalış ve Tuzaklarla Eriphia verrucosa Forskål, (1775) Avcılığında Av Verimlerinin Belirlenmesi

Abstract

Bu çalışma, Çanakkale Boğazı’nda bulunan Eriphia verrucosa yengecinin av veriminin belirlenmesi amacıyla, Nisan 2016 - Mart 2017 tarihleri arasında yürütülmüştür. Avcılık denemeleri serbest dalış ve sepetle 6 istasyonda gerçekleştirilmiştir. Çalışmada 19 serbest dalış operasyonu, 2 dalgıç tarafından, ortalama 36:03±0,002 dakika/dalış süresi ile gerçekleşmiştir. Sepetlerle ise 12 operasyon, her istasyonda 3 adet olmak üzere toplam 18 sepet kullanılarak yapılmıştır. Sepetler her operasyonda 48 saat süreyle suda tutulmuştur. Avcılık denemeleri sonucunda dalarak avcılık ile 3 türe ait toplamda 654 birey, sepetle avcılık ile ise 6 türe ait toplam 13 birey toplanmıştır. Çalışmada hedef tür olarak toplamda 598 E. verrucosa bireyi yakalanmış ve bunların 596 adeti serbest dalışla, 2 adeti de tuzaklarladır. Serbest dalışla yapılan avcılıktaki birim çabadaki av miktarı (CPUE), (CPUE_D(n)=14,32±3,12 adet.saat^-1), sepetle avcılıktakine (CPUE_S(n)=0,0601±0,0186 adet.saat^-1)  göre daha yüksek olarak hesaplanmıştır.

Keywords

• Çanakkale Boğazı,Eriphia verrucosa,Pavurya,Birim Av Gücü,Dalarak avcılık,Sepetle Avcılık,Birim Av Gücü

Determination of catching efficiency of Eriphia verrucosa Forskål, (1775) by using traps and skin diving in Çanakkale Strait

Abstract

This study was carried out between April 2016 and March 2017 in order to the determine the catch efficiency of warty crab (Eriphia verrucosa) in Çanakkale Strait. Fishing experiments were executed with in 6 stations by using traps and skin diving. In the study, 19 diving operations were performed by 2 divers with a mean duration of 36: 03 ± 0,002 minutes/dive. In totally 18 traps (3 traps in per stations) were used in 12 fishing trails.  The traps soak times were 48 hours for each operation. As a result of fishing experiments, a total of 654 individuals belonging to 3 species and a total of 13 individuals belonging to 6 species were collected with skin diving and traps, respectively. In the experiments, a total of 598 E. verrucosa individuals, 596 of which were caught by skin diving and 2 were caught by traps as a target species. The CPUE for diving (CPUE_D = 14,32±3,12 individual, hours^-1) were higher than the mean CPUE for traps (CPUE_S =0,0601 ±0,0186 individual, hours^-1).

Keywords

• Çanakkale Strait,Eriphia verrucosa,warty crab,skin diving,trap fishing,Catch Per Unit Effort

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