Selectivity of multifilament trammel and gillnets for common carp (Cyprinus carpio L., 1758) in Lake Marmara

Celalettin Aydın; Mehmet Cilbiz; Ali İlhan; Hasan Musa Sarı

doi:10.12714/egejfas.2016.33.3.01

EN TR

Selectivity of multifilament trammel and gillnets for common carp (Cyprinus carpio L., 1758) in Lake Marmara

Abstract

This study was aimed to estimate the selectivity properties of multifilament trammel and gillnets for common carp (Cyprinus carpio L., 1758) in Marmara Lake in Manisa, Turkey. Trammel and gillnets of 4, 6, 8, and 10 cm stretched mesh size and 210 d/2 no twine thickness were tested in the Marmara Lake. In addition, selectivity parameter of 11, 12, 13 and 14 cm mesh size of trammel and gillnets were modelled. SELECT method was used to estimate the selectivity parameters. Experiments were carried out monthly in the three different stations identified eastern, middle and western areas which represent longitudinal length of the lake. A total of 36 trials were conducted both nets. A total of 119 common carps were caught ranges between 11.3 - 49.0 cm total lengths. According to the Bi- normal model, which gave the lowest deviance for both trammel and gillnets, selectivity curves were estimated for 4, 6, 8, 10, 11, 12, 13 and 14 cm stretched mesh size modelled lengths as 12.98, 19.47, 25.96, 32.45, 35.70, 38.94, 42.19 and 45.43 cm for trammel nets, 12.40, 18.60, 24.80, 31.00, 34.10, 37.20, 40.30 and 43.40 cm for gillnets, respectively. When considering minimum landing size (40 cm total length), it is recommended that both nets under 13 cm mesh size should be prohibited for common carp fishery in the Lake Marmara.

Keywords: Trammel net, gillnets, common carp Cyprinus carpio, size selectivity, Lake Marmara

Öz

Bu çalışmada, Marmara Gölü’ndeki sazan balığı (Cyprinus carpio L., 1758) için multifilament fanyalı ve galsama uzatma ağlarının seçicilik özelliklerinin tahmin edilmesi amaçlanmıştır. 210d/2 ip kalınlığına ve 4, 6, 8, 10 cm ağ gözü açıklığına sahip fanyalı ve galsama ağlar Marmara Gölü’nde test edilmiştir. Ayrıca elde edilen verilerle 11, 12, 13 ve 14 cm göz açıklığındaki fanyalı ve galsama uzatma ağlarının optimum yakalama boyları için modelleme yapılmıştır. Seçicilik parametrelerinin tahmininde SELECT metot kullanılmıştır. Avcılık denemeleri gölü yatay olarak temsil edecek şekilde; batı, orta ve doğu kısmından belirlenen üç farklı istasyonda aylık olarak yürütülmüştür. Hem fanyalı hem de galsama ağları ile 36 adet avcılık denemesi yapılmıştır. 11,3 - 49,0 cm boy aralığında toplam 119 adet sazan yakalanmıştır. Hem fanyalı hem de galsama ağları için en düşük sapmayı veren Bi-normal modele göre; 4, 6, 8, 10, 11, 12, 13 ve 14 cm göz açıklığındaki fanyalı ağların model boyları; 12,98, 19,47, 25,96, 32,45, 35,70, 38,94 ve 42,19 cm, aynı göz açıklığındaki galsama ağları için model boyları 12,40, 18,60, 24,80, 31,00, 34,10, 37,20, 40,30 ve 43,40 cm, olarak tahmin edilmiştir. Sazan balığının 40 cm minimum avlama boyu göz önüne alındığında, 13 cm göz açıklığının altındaki hem galsama hem de fanyalı uzatma ağlarının yasaklanması tavsiye edilmektedir

Anahtar Kelimeler

Fanyalı uzatma ağı, galsama uzatma ağı, sazan balığı, Cyprinus carpio, boy seçiciliği, Marmara Gölü

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

-

Bölüm

-

Yazarlar

Celalettin Aydın

Mehmet Cilbiz

Ali İlhan

Hasan Musa Sarı

Yayımlanma Tarihi

15 Ağustos 2016

Gönderilme Tarihi

29 Şubat 2016

Kabul Tarihi

-

Yayımlandığı Sayı

Yıl 2016 Cilt: 33 Sayı: 3

DOI

https://doi.org/10.12714/egejfas.2016.33.3.01

IZ

https://izlik.org/JA28BS28JS

Kaynak Göster

RIS / Bibtex

APA

Aydın, C., Cilbiz, M., İlhan, A., & Sarı, H. M. (2016). Selectivity of multifilament trammel and gillnets for common carp (Cyprinus carpio L., 1758) in Lake Marmara. Ege Journal of Fisheries and Aquatic Sciences, 33(3), 183-192. https://doi.org/10.12714/egejfas.2016.33.3.01

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