Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey
Yıl: 2014 Cilt: 14 Sayı: 2 Sayfa Aralığı: 449 - 456 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022
Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey
Öz: Bu çalışmada Türkiyenin Karadeniz kıyılarında mezgit (Merlangius merla ngus euxinus) solungaç ağı avcılığında, av veıskartayı etkileyen faktörler (derinlik, mevsim ve ağ göz açıklığı) incelenmiştir. Toplam 19 tür tanımlanmış ve hedef tür olanmezgit (Merlangius merla ngus euxinus) %87,56lık oranla toplam avın büyük bir kısmını oluşturmuş ve onu %6,32 ilebarbunya (Mullus barbatus ) izlemiştir. Toplam av miktarının %82,02si ticari değer taşırken, %17,98inin ise ıskarta olduğubelirlenmiştir. Asgari avlanabilir boy olan 13 cm altında bulunan ve ıskarta edilen barbunya ve mezgit av miktarları sırasıyla%16,03 ve %13,27 olarak bulunmuştur. En y üksek ıskarta miktarının kış mevsiminde, en düşük ıskarta miktarının ise yazmevsiminde olduğu görülmüştür. 55 -74 m derinlik grubunda ve 32 mm göz açıklığına sahip ağda ıskarta oranının en yüksekolduğu bulunmuştur. One -way analysis of similarity (ANOSIM) e göre ilkbahar ve yaz mevsimleri arasında, 32 -40, 32 -44mm göz açıklıklarına sahip ağların ıskarta tür kompozisyonları arasındaki farklılıkların önemli olduğu belirlenmiştir (P<0 ,05).Solungaç uzatma ağları balıkçılığında türleri ve ekosistemi korumak için ıskarta ile ilgili bu bilgilerin kullanılması,ekosisteme dayalı sürdürülebilir balıkçılık yönetimine katkı sağlayabilir .
Anahtar Kelime: Konular:
Güney Karadeniz de derinlik, mevsim ve ağ göz açıklığının mezgit ( merlangius merlangus euxinus) solungaç ağı avcılığında av ve ıskarta üzerine etkisi
Öz: In this study, factors (depth, season and mesh size) influencing the catch and discards of whiting ( Merlangius merlanguseuxinus ) gillnet fishery on the Black Sea coasts of Turkey were investigated. A total of 19 species were identified and thetarget species, whiting (Merlangius merlangus euxinus ), dominated 87.56% of the total catch and followed by red mullet(Mullus barbatus ) with 6.32%. While 82.02% of the total catch had commercial value, 17.98% was discarded. The percentageof th e discarded red mullet and whiting under MLS (<13 cm) were found to be 16.03% and 13.27%, respectively. The highestdiscard amount was observed in winter and the lowest one in summer. The discard rate was highest in the 55 -74 m depthgroup and the 32 mm me sh size. One -way analysis of similarity (ANOSIM) showed that there were significant differences inthe discard species compositions between spring and summer, as well as 32 and 40 mm, 32 and 44 mm mesh sizes (P<0.05).These results on the discard information in gillnet fishery can contribute to the literature on ecosystem -based sustainablefisheries management by highlighting relevant results on the protection of species and ecosystem.
Anahtar Kelime: Konular:
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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| APA | KALAYCI F, YEŞİLÇİÇEK T (2014). Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. , 449 - 456. |
| Chicago | KALAYCI Ferhat,YEŞİLÇİÇEK TUNCAY Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. (2014): 449 - 456. |
| MLA | KALAYCI Ferhat,YEŞİLÇİÇEK TUNCAY Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. , 2014, ss.449 - 456. |
| AMA | KALAYCI F,YEŞİLÇİÇEK T Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. . 2014; 449 - 456. |
| Vancouver | KALAYCI F,YEŞİLÇİÇEK T Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. . 2014; 449 - 456. |
| IEEE | KALAYCI F,YEŞİLÇİÇEK T "Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey." , ss.449 - 456, 2014. |
| ISNAD | KALAYCI, Ferhat - YEŞİLÇİÇEK, TUNCAY. "Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey". (2014), 449-456. |
| APA | KALAYCI F, YEŞİLÇİÇEK T (2014). Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 14(2), 449 - 456. |
| Chicago | KALAYCI Ferhat,YEŞİLÇİÇEK TUNCAY Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences 14, no.2 (2014): 449 - 456. |
| MLA | KALAYCI Ferhat,YEŞİLÇİÇEK TUNCAY Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences, vol.14, no.2, 2014, ss.449 - 456. |
| AMA | KALAYCI F,YEŞİLÇİÇEK T Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences. 2014; 14(2): 449 - 456. |
| Vancouver | KALAYCI F,YEŞİLÇİÇEK T Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences. 2014; 14(2): 449 - 456. |
| IEEE | KALAYCI F,YEŞİLÇİÇEK T "Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey." Turkish Journal of Fisheries and Aquatic Sciences, 14, ss.449 - 456, 2014. |
| ISNAD | KALAYCI, Ferhat - YEŞİLÇİÇEK, TUNCAY. "Effects of depth, season and mesh size on the catch and discards of whiting ( merlangius merlangus euxinus) gillnet fishery in the southern black sea, Turkey". Turkish Journal of Fisheries and Aquatic Sciences 14/2 (2014), 449-456. |
