Gillnet selectivity for non target fish species caught by red mullet gillnets north Aegean Sea
Abstract
The aim of this study is to determine the effects of red mullet gillnets that commonly used in Turkish waters on sustainability of non target fish species. For these purpose, surveys were realized with 18 - 20 - 22 mm nominal bar length red mullet gillnets between December 2008 and May 2010 along the north Aegean Sea coasts (5-30 m). SELECT method was used with five different model (Normal location, normal scale, log-normal, gamma and bi-modal) for evaluating selectivity parameters of non target fish species. Selectivity models were determined as bi-modal for Serranus scriba and Symphodus tinca, log normal for Scorpaena porcus and Spicara maena and gamma for Pagellus acarne. Optimum catch lengths and spread values and selectivity curves were given for 5 species. Results showed that use of a larger mesh size over the 22 mm mesh is important for ensuring stock sustainability of the non target fish species.
Keywords
Kaynakça
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Ayrıntılar
Birincil Dil
İngilizce
Konular
-
Bölüm
Araştırma Makalesi
Yazarlar
Engin Kocabaş
Türkiye
Alkan Öztekin
0000-0003-3914-9788
Türkiye
Adnan Ayaz
0000-0003-4839-9244
Türkiye
Yayımlanma Tarihi
15 Eylül 2018
Gönderilme Tarihi
5 Nisan 2018
Kabul Tarihi
3 Haziran 2018
Yayımlandığı Sayı
Yıl 2018 Cilt: 35 Sayı: 3
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