An investigation on the fisheries potential of Istanbuldalians

In this study, catch composition, catch per unit effort (CPUE), and some ecological indices of three dalian fisheries built in the Bosphorus in 2016 (Dilburnu, Beykoz, and Filburnu Dalians). Totally 15 fish species belonging to 12 families was caught. The most commonly caught species were; Atherina sp., Belone belone, Diplodus vulgaris, Pomatomus saltatrix, Sardina pilchardus, and Trachurus sp. According to the ecological index values, the highest number of species was in Filburnu Dalian in June; the highest species variation index was seen in Filburnu Dalian in June, and the highest species richness was seen in Beykoz Dalian in May. The number of fishing days varied between 21 and 35, and CPUE varied between 163,08 kg/day and 456,39 kg/day. The Highest CPUE are calculated as; 211,70±70 kg/day for A. boyeri in Dilburnu Dalian, 56,33±6,95 kg/day for P. saltatrix in Beykoz Dalian, and 112,80±29,54 kg/day for A. boyeri in Filburnu Dalian. When the CPUE values of the species in the dalians are compared, they were found to be statistically significant according to variance t- test.