Catch composition and discard of the boat seine in the İstanbul Strait (Turkey)

Authors : UĞUR UZER, TANER YILDIZ, FİRDES SAADET KARAKULAK

Pages : 702-713

View : 11 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This study attempted to determine certain characteristics of the species caught in the boat seine fishery in the İstanbul Strait during the 2009-2010 fishing season, including catch composition, commercial and nontarget catch ratios, catch per unit effort insert ignore into journalissuearticles values(CPUE);, and the length distributions of commercial species. A survey of 20 boat seine operations detected species belonging to the following 3 different taxonomic groups: 26 Osteichthyes, 2 Crustacea, and 1 Mollusca. Of all of the nontarget species, 13 were commercial, 14 were noncommercial, and only 1 was under threat. Of the total catch, the proportion of the commercial species in the nontarget catch was 31.3%, and that of the discarded catch, which the fishermen did not take into account, was 2.8%. According to the Spearman rank correlation test, there was a significant correlation between the total catch and the discarded catch insert ignore into journalissuearticles values(r = 0.759);; the size of discarded catch increased as the catch increased insert ignore into journalissuearticles values(P = 0.000);. It was clear from the data that overfishing was seen in the commercial species.
Keywords : Boat seine, discard, bycatch, İstanbul Strait, Sea of Marmara