Multifilament ve monofilament fanyali uzatma aglari ile avlanan hedef disi baliklarin aglar üzerindeki dagilimlari
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Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Emrah SIMSEK
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu arastirmada Karadeniz’in Sinop kiyilarinda 1 Ocak 2002 ve 31 Aralik 2002 tarihleri arasinda fanyali uzatma aglari ile avlanan hedef disi balik türlerinin aglar üzerindeki dagilimlari tespit edilmistir. Çalismada multifilament (Fml) ve monofilament (Fmn) materyale sahip, tor ag göz açikligi 36 mm, fanya göz açikligi 200 mm olan uzatma aglari kullanilmistir. Baliklarin dikey yöndeki konum tespiti için yükseklikteki fanya göz sayisi (7 göz), dikkate alinmistir. Yatay yöndeki konum için donatilmis agin mantar yakasi 10 esit parçaya ayrilarak isaretleme yapilmistir. Arastirmada toplam 286 adet hedef disi balik (Scorpeana porcus, Gaidropsarus mediterraneus, Solea spp., Gobius spp. ve Labrus spp.) yakalanmistir. Baliklarin 188 adeti Fml ag ile 98 adedi ise Fmn ag ile avlanmistir. Her iki agda baliklar %76,1 ve %77,6’lik oranlarla en fazla alt kisimlarda (1 ve 2. Fanya) yakalanma dagilimi göstermistir. Demersal özellik gösteren bu baliklarin orta (3, 4 ve 5. Fanya) ve üst bölümlerde (6 ve 7. Fanya) daha az yakalandigi belirlenmistir. Sonuçlari, fanyali uzatma aglarinda hedef disi türlerin avciliginin azaltilmasi ve tür seçiciligi için modifiye ve iyilestirme çalismalarina katki saglayabilecegi düsünülmektedir
In this study, the distribution on the nets of by-catch fish species caught by the trammel nets was determined between 01 January 2002 and 31 December 2002 in the Sinop province shores of Black Sea. Nets have multifilament (Fml) and monofilament (Fmn) material with inner mesh size of 36 mm and outer mesh size of 200 mm, were used in the study. The number (7 meshes) of the outer at the height of the net for vertical position of fish was considered. Buoyancy rope of equipped net was divided 10 equal parts for horizontal position. A total of 286 by-catch fish (Scorpeana porcus, Gaidropsarus mediterraneus, Solea spp., Gobius spp. and Labrus spp., species) were caught in the study. Fml and Fmn were captured 188 and 98 specimens, respectively. For both nets, the fishes showed capture distribution in the bottom parts (1 and 2 no outer net) 76.1% and 77.6% respectively. Fishes with demersal characteristics lower were caught in the middle (3, 4 and 5 no outer net) and upper parts (6 and 7 no outer net) of the nets. It is thought that the results may contribute to the modification and improvement studies in the reduction of none target species in and achieving species selectivity in the trammel net fisheries.
In this study, the distribution on the nets of by-catch fish species caught by the trammel nets was determined between 01 January 2002 and 31 December 2002 in the Sinop province shores of Black Sea. Nets have multifilament (Fml) and monofilament (Fmn) material with inner mesh size of 36 mm and outer mesh size of 200 mm, were used in the study. The number (7 meshes) of the outer at the height of the net for vertical position of fish was considered. Buoyancy rope of equipped net was divided 10 equal parts for horizontal position. A total of 286 by-catch fish (Scorpeana porcus, Gaidropsarus mediterraneus, Solea spp., Gobius spp. and Labrus spp., species) were caught in the study. Fml and Fmn were captured 188 and 98 specimens, respectively. For both nets, the fishes showed capture distribution in the bottom parts (1 and 2 no outer net) 76.1% and 77.6% respectively. Fishes with demersal characteristics lower were caught in the middle (3, 4 and 5 no outer net) and upper parts (6 and 7 no outer net) of the nets. It is thought that the results may contribute to the modification and improvement studies in the reduction of none target species in and achieving species selectivity in the trammel net fisheries.
Açıklama
Anahtar Kelimeler
Fanyali uzatma agi, Hedef disi türler, Balik dagilimi, Karadeniz
Kaynak
Marine and Life Sciences
WoS Q Değeri
Scopus Q Değeri
Cilt
1
Sayı
1
