Karadeniz’ de (Sinop-İnceburun) ticari dip trolü ile avlanabilir balık biyokütle ve yoğunluk dağılımları
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Tarih
2010
Yazarlar
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Cilt Başlığı
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Erişim Hakkı
Özet
Şubat - Nisan 2007 ve Ocak - Nisan 2008 tarihleri arasındaki av döneminde gerçekleştirilen bu çalışmada her trol çekiminde ortalama 0.13590.0013 km 2 olmak üzere toplam 80.07 km 2 lik alan taranmıştır. Sinop-İnceburun bölgesinde yapılan alan çalışmasında mezgit (Gadus mer-langus euxinus), barbunya (Mullus barbatus ponticus), kalkan (Psetta maxima maeotica), iskorpit (Scorpaena porcus), tirsi (Alosa sp.), izmarit (Spicara maena), istavrit (Trachurus mediterraneus), mahmuzlu camgöz (Squalus acanthias), dikenli vatoz (Raja clavata) ve kaya balıklarının (Gobius sp.) yıllık, aylık ve günlük av miktarları belirlenerek türlerin avlanabilir biyokütleleri ve bölgedeki stok büyüklükleri incelenmiştir. 2007 ve 2008 yılı olmak üzere her iki av sezonu için ayrı yapılan araştırmada elde edilen bulgulara göre avlama bölgesinde orta-lama 619.44 13.71 kg/km 2 mezgit; 22.451.20 kg/km 2 barbunya; 40.781.11 kg/km 2 kalkan; 0.750.11 kg/km 2 iskorpit; 7.260.82 kg/km 2 tirsi; 2.980.24 kg/km 2 izmarit; 1.100.38 kg/km 2 istavrit; 13.053.00 kg/km 2 mahmuzlu camgöz; 2.420.36 kg/km 2 dikenli vatoz ve 1.300.18 kg/km2 kayabalığı bulunmaktadır. 2007-2008 yılı av sezonlarında avlama böl-gesindeki ortalama stok büyüklükleri mezgit için 451.599.89 ton; barbunya 15.960.81 ton; kalkan 30.050.83 ton; iskorpit 0.550.77 ton; tirsi 5.070.52 ton; izmarit 2.190.17 ton; is-tavrit 0.810.27 ton, mahmuzlu camgöz 9.542.30 ton; dikenli vatoz 1.600.24 ton; kayabalığı 0.970.12 ton olarak belirlenmiştir.
In this study carried out between February-April 2007 and January-April 2008 fishing periods, a total of 80.07 km 2 areas has swept and mean swept area is 0.1359±0.0013 km 2 per trawl haul. On the swept area surveys performed at the Sinop-İnceburun region; annual, monthly and daily catch amounts of whiting (Gadus merlangus euxinus), red mullet(Mullus barbatus ponticus), turbot (Psetta maxima maeotica), black scorpion fish (Scorpaena porcus), shad (Alosa sp.), pi-carel (Spicara maena), horse mackerel (Trachurus mediterraneus), picked dogfish (Squalis achantias), thomback ray (Raja clavata) and goby (Gobius sp.) has determined and, catchable fish biomass and stock size on the region has examined. According to results of the study, sep-arately practiced for both of 2007 and 2008 fishing periods, distribution of whiting, red mullet, turbot, scorpion fish, shad, picarel, horse mackerel, shark, ray and goby has calculated 614.44 ± 13.71 kg/km 2, 22.45 ± 1.20 kg/km 2, 40.78 ± 1.11 kg/km 2, 0.75 ± 0.11 kg/km2, 7.26 ± 0.82 kg/km 2, 2.98 ± 0.24 kg/km 2, 1.10 ± 0.38 kg/km 2, 13.05 ± 3.00 kg/km 2, 2.42 ± 0.36 kg/km 2 and 1.30 ± 0.18 kg/km 2 respectively. Stock sizes of the species in 2007 and 2008 fishing periods has calculated as 451.59 ± 0.89 tons for whiting, 15.96 ± 0.81 tons for red mullet, 30.05 ± 0.83 tons for turbot, 0.55 ± 0.77 tons for black scorpion fish, 5.07 ± 0.52 tons for shad, 2.19 ± 0.17 tons for picarel, 0.81 ± 0.27 tons for horse mackerel, 9.54 ± 2.30 tons for picked dogfish, 1.60 ± 0.24 tons for thomback ray and 0.97 ± 0.12 tons for goby.
In this study carried out between February-April 2007 and January-April 2008 fishing periods, a total of 80.07 km 2 areas has swept and mean swept area is 0.1359±0.0013 km 2 per trawl haul. On the swept area surveys performed at the Sinop-İnceburun region; annual, monthly and daily catch amounts of whiting (Gadus merlangus euxinus), red mullet(Mullus barbatus ponticus), turbot (Psetta maxima maeotica), black scorpion fish (Scorpaena porcus), shad (Alosa sp.), pi-carel (Spicara maena), horse mackerel (Trachurus mediterraneus), picked dogfish (Squalis achantias), thomback ray (Raja clavata) and goby (Gobius sp.) has determined and, catchable fish biomass and stock size on the region has examined. According to results of the study, sep-arately practiced for both of 2007 and 2008 fishing periods, distribution of whiting, red mullet, turbot, scorpion fish, shad, picarel, horse mackerel, shark, ray and goby has calculated 614.44 ± 13.71 kg/km 2, 22.45 ± 1.20 kg/km 2, 40.78 ± 1.11 kg/km 2, 0.75 ± 0.11 kg/km2, 7.26 ± 0.82 kg/km 2, 2.98 ± 0.24 kg/km 2, 1.10 ± 0.38 kg/km 2, 13.05 ± 3.00 kg/km 2, 2.42 ± 0.36 kg/km 2 and 1.30 ± 0.18 kg/km 2 respectively. Stock sizes of the species in 2007 and 2008 fishing periods has calculated as 451.59 ± 0.89 tons for whiting, 15.96 ± 0.81 tons for red mullet, 30.05 ± 0.83 tons for turbot, 0.55 ± 0.77 tons for black scorpion fish, 5.07 ± 0.52 tons for shad, 2.19 ± 0.17 tons for picarel, 0.81 ± 0.27 tons for horse mackerel, 9.54 ± 2.30 tons for picked dogfish, 1.60 ± 0.24 tons for thomback ray and 0.97 ± 0.12 tons for goby.
Açıklama
Anahtar Kelimeler
Balıkçılık
Kaynak
Journal of FisheriesSciences.com
WoS Q Değeri
Scopus Q Değeri
Cilt
4
Sayı
3
