Assessment of efficiency between fyke net with fixed gill net in Anzali Wetland

Abstract

Fixed gill net has been used for Teleostei fishery by the fishermen in Anzali Wetland. The aim of this study was to compare the CPUE, species composition, length frequency and the vulnerability of Teleostei between fixed gill net and fyke net from 1st November 2010 to 30st March 2011 in Anzali Wetland. Ten fixed gill nets and ten fyke nets were set. Mean CPUE (±SE) was estimated 0.17±0.03 and 0.26±0.07Kg/24h for fixed gill net and fyke net, respectively. Mean CPUE differed significantly between two gears. Also mean CPUE (±SE) differed significantly between fixed gill net and fyke net for 100m2 with higher CPUE (2.14±0.54Kg/24h) in fyke net. The relative frequency of caught species in fixed gill net and fyke net were dominated by Carassius auratus (38%) followed by Esox lucius (65%), respectively. Length-frequency distributions of the species had greater range of length and weight in fyke net in relative to fixed gill net. The amount of damage differed significantly between fixed gill net and fyke net with less damage and with higher survival in fyke net. The results of this study showed that fyke net has valuable and marketability catch in relative to gill net that resulted to higher income for fishermen. Also these results demonstrated that fyke net had less pressure on environment of Anzali Wetland.