Spatial and temporal distribution of Kutum (Rutilus frisii kutum, Kamensky 1901) in Iranian waters of the Caspian Sea
2015
H. Fazli email | D. Kor | G. Daryanabard
Caspian Kutum (Rutilus frisii kutum, Kamensky 1901) is among the main commercial species in theCaspian Sea. The present study aimed to determine the spatial and temporal distribution patterns ofKutum in depth ranges of 10 to 100 m by bottom trawl net in Iranian waters of the Caspian Seaduring 2008 to 2010. The results showed that the maximum catch and CPUE were 2903 kg and57.08 kg/0.5 h in winter 2009. The minimum catch and CPUE were 79 kg and 1.41 kg/0.5 h inspring 2010. During the warm seasons (spring and summer) most Kutums occurred in depths lessthan 20 m. While, during cold seasons they occurred at all depths. The average (±SE) CPUE was94.0 ± 78.53 kg/0.5 h in depths 20-50 m in autumn and 128.3 ± 77.64 kg/0.5 h in depths >50 m inwinter.
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