Fishing Practices in Sandha River: An Impact Assessment on Fisheries Resources
[1]
Mst. Ruma, Department of Fisheries Management, Patuakhali Science and Technology University, Patuakhali, Bangladesh.
[2]
Md. Moazzem Hossain, Department of Fisheries Management, Patuakhali Science and Technology University, Patuakhali, Bangladesh.
[3]
Ferdous Ahamed, Department of Fisheries Management, Patuakhali Science and Technology University, Patuakhali, Bangladesh.
[4]
Md. Bokthier Rahman, Department of Fisheries Technology, Patuakhali Science and Technology University, Patuakhali, Bangladesh.
Sandha River is experienced with the use of different types of fishing gears to exploit its fisheries resources from time immoral. Therefore, the objectives of the present study were to explore fishing gears and identity their impact on fisheries resources from August 2015 to July 2016. During the study period, a total of 20 different types of fishing gears were observed under 7 major groups of gears of which gill net was the most productive and dominant gear followed by push net and fixed purse net. Higher mesh size (ranged from 0.4-11 cm) was observed for gill net with higher catch composition (0.5-7 kg/effort) and species specificity (52 fish species) while lower mesh size recorded for cast net (0.3-0.4 cm). In general, price of net and mesh size were found as a positive correlation with CPUE (Catch Per Unit Effort) (kg/effort) where r= 0.715 and 0.917, respectively. From the catch monitoring data, the total estimated catch from the Sandha River was 7801 kg. Further, according to Garretts Ranking Technique, fixed purse net was found as the most destructive gear followed by seine and gill net. Government as well as local authorities should pay more attention to keep up sustainable exploitation of Sandha River fisheries.
Sandha River, Gears Impact, Mesh Size, CPUE, Sustainable Exploitation
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