Population distribution of bony fishes in less-than-ten-meter depths of Mazandaran Coasts
Subject Areas : environmental management
Keywords: Bony Fishes, Caspian Sea, Southern Part,
Abstract :
In this study, the diversity and distribution of economical bony fishes in less-than-ten-meter depths, CPUE and population features such as total length, weight and age were investigated in the southern part of the Caspian Sea in 1385-6. Sampling was done in five regions: Amir Abad, Larim, Izdeh, Kheyroud, and Nashtarood with Gilnet in mesh sizes of 26, 33, 40, 60, 100, and 150 mm. In total, 227 fishes were caught: 110 Rutilus frisi kutun, 32 Ciprinus carpio, 36 Caspiolasa kesslerri, 38 Liza auratus, 8 Stizostidion lucioperca and 3 Vimba vimba. The CPUE was 3.66 for Rutilus krisi kutum, 0.5 for carpio, 0.52 for Caspiolasa, 0.63 for auratus , 0.13 for Stizostidion lucioperca, and 0.05 for Vimba vimba per catch. The average total length of Rutilus, carpio, Caspiolasa kesslerri, Liza auratus, Stizostidion lucioperca, Vimba vimba are 37.9±7.2, 31.6±7, 23.1±4.4, 22.6±2.3, 23.6±3, 20.5±2 cm, respectively. And the averages of the total weight are 683.5±361.2, 379.5±242.6, 112.3±125.9, 104.6±33.4, 225.6±4, 91.6±2 gr., respectively: Regarding their ages, Rutilus frisi kutum was in , Cyprinus carpio was in , Caspiolasa kesslerri was in , Liza auratus was in 2+ , Stizostidion lucioperca was in and Vimba vimba was in 3+ .