The Effects on Target, By-Catch and Discard Catch of Using Multifilament and Monofilament With Selvedge (Guarding Net) on the Trammel Nets in the Black Sea Coastal Fisheries

Authors : Hakan AKSU, Yakup ERDEM, Süleyman ÖZDEMİR

Pages : 225-235

Doi:10.33714/masteb.1242846

View : 32 | Download : 37

Publication Date : 2023-06-30

Article Type : Research Paper

Abstract :This study was carried out in 13 fishing operations in the inner harbor area of Sinop, from September through November of 2004. Trammel nets were used, which has 32 mm mesh size and target fish species of the fishing gear is red mullet insert ignore into journalissuearticles values(Mullus barbatus); in the study. Three net groups were used in the experiments, without selvedge insert ignore into journalissuearticles values(A0); for the control net, multifilament with selvedge insert ignore into journalissuearticles values(A1); and monofilament with selvedge insert ignore into journalissuearticles values(A2); respectively. 65.3% Osteichthyes fish insert ignore into journalissuearticles values(696 individuals);, 16.8% Mollusca insert ignore into journalissuearticles values(179 individuals);, 16.4% was Arthropoda insert ignore into journalissuearticles values(175 individuals); and 1.5% was Chondrichthyes fish insert ignore into journalissuearticles values(16 individuals); of catch obtained from the operations were form. A total 124 individuals as the target species insert ignore into journalissuearticles values(red mullet);, 398 individuals as bycatch species, and 544 individuals as discarded species were captured sea trials. Catch ratio of A0, A1 and A2 nets were determined 51.88%, 21.58% and 26.55% respectively. 48.38% of the target species, 30.40% of the bycatches and 57.53% of the discarded catch were caught by the A0 net. 25.81% of the target species, 45.23% of the bycatches, and 18.57% of the discard catch were caught with A1 net. 25.81% of the target species, 24.37% of the bycatch and 24.37% of the discarded catch were caught by the A2 net. The results showed that the use of selvedge insert ignore into journalissuearticles values(guarding net); on trammel nets in the Black Sea coastal fisheries caused a slight decrease in target fish catch, but significantly decreased the amount of discarded catch.
Keywords : Coastal fisheries, Trammel net, Bycatch, Discard, Black Sea