Yemli Karides Tuzaklarının Karadeniz’de Uygulanabilirliği Üzerine Bir Ön Araştırma

Yıl 2005, Cilt: 1 Sayı: 1, - , 04.01.2005

Süleyman Özdemir Yakup Erdem Çetin Sümer

Öz

Bu araştırmada karides avcılığında küçük boyutlu yemli tuzakların kullanılabilirliği ve av verimi ile tür kompozisyonu ele alınmıştır. Midye ile yemlenen tuzaklar 4, 18, 24, 48 ve 72 saat denizde bırakılmış, toplam 10 denemede başta Palaemon elegans ve Palaemon adspersus türü karidesler olmak üzere, horozbina (Salaria pavo), kaya balığı (Gobius sp.) ve lapina (Labrus sp.) türlerinden oluşan 375 adet birey yakalanmıştır. Tuzağın suda kalma süresi açısından en fazla ürün 72 saatte elde edilmiş ancak 18 saatten uzun sürelerde hedef olmayan türler giderek artan oranda tuzaklara girmeye başlamıştır.
Av miktarı ile denizde kalma süresi arasında y = 33,766Ln(x) - 37,769 (R = 0,97) şeklinde kuvvetli bir ilişki bulunmuştur. Diğer yandan denizde kalma süresine göre birim zamandaki av miktarının ilk dört saatte hızla arttığı, sonraki 4 saatte artışın yavaşladığı ve 8. saatten sonra ise yavaşça azaldığı belirlenmiştir. Avcılığın karlılığı bakımından denizde kalma süresinin 24 saatle sınırlandırılması gerektiği ve bazı ekonomik türlerin ticari avcılığında algarna gibi doğaya zarar veren avcılık yöntemlerine alternatif olarak özel olarak düzenlenmiş daha büyük tuzakların kullanılması ile daha korumacı bir avcılık yapılabileceği sonucuna varılmıştır.

Anahtar Kelimeler

Karides tuzağı, Hedef tür, Hedef dışı tür, Av verimi, Denizde bırakma süresi

A Preliminary Investigation on Feasible in Black Sea of Baited Shrimp Traps

Öz

In this study were investigated species composition, catch efficiency of fishing gear and feasible of small dimension baited traps on shrimp fishery. Traps baited by mussel were soaked times 4, 18, 24, 48 and 72h, forming priority shrimp species, Palaemon elegans and Palaemon adspersus with fish species, Salaria pavo, Gobius sp. and Labrus sp. in total 10 experiments were caught 375 individuals. Point of view soak time of traps could be most catch efficiency to 72 h but enter rate of none target species into traps were gradually raised at times more 18 h. Between catch proportion and soak time found strong relationship y = 33,766Ln(x) – 37,769 (R = 0,97). Otherwise catch per unit of effort (CPUE) quickly increasing at first 4h, at subsequent 4 h slowly down and after 8th h gradually decreasing determined as to soak time. Line of thought profitable of fishery soak time should limited 24 h and as alternative fishery methods to damage nature as dredge was concluded further protective fishery feasibility with using of specials arranged more great traps at commercial fishery of same economical species

Anahtar Kelimeler

Shrimp trap, Target species, None-target species, Catch efficiency, Soak time

Kaynakça

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