Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea
Across the Mediterranean and the Black Sea, an improvement in technological adoption which optimizes the environmental benefits of fisheries is needed. The testing of quality standards in trawl fishing is one of the essential components. In an experiment, we tested four bottom trawl cod-ends in the...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Istanbul University Press
2023-01-01
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| Series: | Aquatic Sciences and Engineering |
| Subjects: | |
| Online Access: | https://dergipark.org.tr/tr/download/article-file/2701310 |
| _version_ | 1797272046885928960 |
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| author | Firdes Saadet Karakulak Uğur Uzer Celalettin Aydın Hamdı Moussa Ahmet Çatal İbrahim Tamer Emecan Taner Yıldız |
| author_facet | Firdes Saadet Karakulak Uğur Uzer Celalettin Aydın Hamdı Moussa Ahmet Çatal İbrahim Tamer Emecan Taner Yıldız |
| author_sort | Firdes Saadet Karakulak |
| collection | DOAJ |
| description | Across the Mediterranean and the Black Sea, an improvement in technological adoption which optimizes the environmental benefits of fisheries is needed. The testing of quality standards in trawl fishing is one of the essential components. In an experiment, we tested four bottom trawl cod-ends in the western Black Sea to determine the characteristics of the catch composition. Fishing trials were conducted by 40 mm diamond (40D), 44 mm diamond (44D), 40 mm square (the 40S), and 40 mm 90-degree turned (40T) mesh cod-ends for 31 bottom trawling hauls. The multivariate analysis of catch composition indicated a significantly higher differentiation between 40D and 40T cod-ends, mainly characterized by five species: Merlangius merlangus, Mytilus galloprovincialis, Trachinus draco, Mullus barbatus, and Uranuscopus scaber. The difference in the shape of cod-end meshes reflected the variation in the catchability and catch composition. However, the 40S and 40T showed 80% similarity in catch composition. Among cod-ends, 40T yielded in lowest catch per unit effort for both commercial and other species. Adoption of gear specially made to catch more target species can help bottom trawl fisheries further improve their ecological and economic sustainability. |
| first_indexed | 2024-03-07T14:18:50Z |
| format | Article |
| id | doaj.art-da72b016e7cf414c8d4defc5ad9689ac |
| institution | Directory Open Access Journal |
| issn | 2602-473X |
| language | English |
| last_indexed | 2024-03-07T14:18:50Z |
| publishDate | 2023-01-01 |
| publisher | Istanbul University Press |
| record_format | Article |
| series | Aquatic Sciences and Engineering |
| spelling | doaj.art-da72b016e7cf414c8d4defc5ad9689ac2024-03-06T10:10:12ZengIstanbul University PressAquatic Sciences and Engineering2602-473X2023-01-01381536110.26650/ASE202211873554Catch Composition of Different Bottom Trawl Cod-ends in the Western Black SeaFirdes Saadet Karakulak0Uğur Uzer1Celalettin Aydın2Hamdı Moussa3Ahmet Çatal4İbrahim Tamer Emecan5Taner Yıldız6İSTANBUL ÜNİVERSİTESİ, SU BİLİMLERİ FAKÜLTESİİSTANBUL ÜNİVERSİTESİ, SU BİLİMLERİ FAKÜLTESİEGE ÜNİVERSİTESİ, SU ÜRÜNLERİ FAKÜLTESİ, SU ÜRÜNLERİ PR.İSTANBUL ÜNİVERSİTESİ, FEN BİLİMLERİ ENSTİTÜSÜİSTANBUL ÜNİVERSİTESİ, FEN BİLİMLERİ ENSTİTÜSÜİSTANBUL ÜNİVERSİTESİ-CERRAHPAŞAİstanbul ÜniversitesiAcross the Mediterranean and the Black Sea, an improvement in technological adoption which optimizes the environmental benefits of fisheries is needed. The testing of quality standards in trawl fishing is one of the essential components. In an experiment, we tested four bottom trawl cod-ends in the western Black Sea to determine the characteristics of the catch composition. Fishing trials were conducted by 40 mm diamond (40D), 44 mm diamond (44D), 40 mm square (the 40S), and 40 mm 90-degree turned (40T) mesh cod-ends for 31 bottom trawling hauls. The multivariate analysis of catch composition indicated a significantly higher differentiation between 40D and 40T cod-ends, mainly characterized by five species: Merlangius merlangus, Mytilus galloprovincialis, Trachinus draco, Mullus barbatus, and Uranuscopus scaber. The difference in the shape of cod-end meshes reflected the variation in the catchability and catch composition. However, the 40S and 40T showed 80% similarity in catch composition. Among cod-ends, 40T yielded in lowest catch per unit effort for both commercial and other species. Adoption of gear specially made to catch more target species can help bottom trawl fisheries further improve their ecological and economic sustainability.https://dergipark.org.tr/tr/download/article-file/2701310black seabottom trawlcatch compositioncod-endblack seabottom trawlcatch compositioncod-end |
| spellingShingle | Firdes Saadet Karakulak Uğur Uzer Celalettin Aydın Hamdı Moussa Ahmet Çatal İbrahim Tamer Emecan Taner Yıldız Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea Aquatic Sciences and Engineering black sea bottom trawl catch composition cod-end black sea bottom trawl catch composition cod-end |
| title | Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea |
| title_full | Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea |
| title_fullStr | Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea |
| title_full_unstemmed | Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea |
| title_short | Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea |
| title_sort | catch composition of different bottom trawl cod ends in the western black sea |
| topic | black sea bottom trawl catch composition cod-end black sea bottom trawl catch composition cod-end |
| url | https://dergipark.org.tr/tr/download/article-file/2701310 |
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