Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea

İbrahim Tamer Emecan; Taner Yıldız; Uğur Uzer; Ahmet Çatal; Hamdı Moussa; Celalettin Aydın; Firdes Saadet Karakulak

Makale detayları

Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea

Yazarlar:

İbrahim Tamer Emecan | Taner Yıldız | Uğur Uzer | Ahmet Çatal | Hamdı Moussa | Celalettin Aydın | Firdes Saadet Karakulak

Yayıncı:

Istanbul University

Ana Başlıklar:

Hydrobiology

Dergi:

Aquatic Sciences and Engineering Vol.38 Issue 1, pp.53-61

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001281626

pISSN:

2602-473X

Anahtar kelimeler:

Özet:

 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.

 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.

 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.

 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.

Makale detayları

Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea

Yazarlar:

İbrahim Tamer Emecan | Taner Yıldız | Uğur Uzer | Ahmet Çatal | Hamdı Moussa | Celalettin Aydın | Firdes Saadet Karakulak

Yayıncı:

Istanbul University

Ana Başlıklar:

Hydrobiology

Dergi:

Aquatic Sciences and Engineering Vol.38 Issue 1, pp.53-61

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001281626

pISSN:

2602-473X

Black Sea

Bottom trawl

catch composition

cod-end

Black Sea

Bottom trawl

catch composition

cod-end

Sayı

Makale detayları

Yazarlar: İbrahim Tamer Emecan | Taner Yıldız | Uğur Uzer | Ahmet Çatal | Hamdı Moussa | Celalettin Aydın | Firdes Saadet Karakulak

Yayıncı: Istanbul University

Ana Başlıklar: Hydrobiology

Dergi: Aquatic Sciences and Engineering Vol.38 Issue 1, pp.53-61

Belge Tipi: Makale

Yayın Tarihi: 1/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001281626

pISSN: 2602-473X

Sayı

Yazarlar:

İbrahim Tamer Emecan | Taner Yıldız | Uğur Uzer | Ahmet Çatal | Hamdı Moussa | Celalettin Aydın | Firdes Saadet Karakulak

Yayıncı:

Istanbul University

Ana Başlıklar:

Hydrobiology

Dergi:

Aquatic Sciences and Engineering Vol.38 Issue 1, pp.53-61

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001281626

pISSN:

2602-473X