Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094

November 2013 Vol. 2(11): pp. 283-288

Copyright © 2015 Global Advanced Research Journals

 

Full Length Research Paper

Exploitation of marine swimming crabs as by-catch in artisanal fishery of the Bay of Bengal

Roy Bikram Jit, Nripendra Kumar Singha, S.M. Hasan Ali And Md. Gaziur Rhaman.

 

Scientific Officer, Marine Fisheries Survey Management Unit, Chittagong, Bangladesh.

*Corresponding Author’s Email: jitroy1964@yahoo.com

Tell: 00 88 01815509464 

Accepted 01 October, 2013

 

Abstract

The study was conducted during March 2011 to August 2011 in the east southern coastal area of Bangladesh marine territory to record landing trends, percentage composition and exploitation practice of marine swimming crabs from Shahparir dwip, Teknaf sadar, Shamlapur, BFDC fish harbour and Moheskhali fish landing centers at Cox’s Bazaar district. In this study three swimming crab species were recorded under the family Portunidae, such as- Blue swimming crab-Portunus pelagicus (Linnaeus,1758), Three spot swimming crab- Portunus  sanguinolentus (Herbst, 1783) are abundantly available and Cross crab- Charybdis  feriatus (Linnaeus, 1758) is found incidentally in the artisanal fishing. A total 74.650 MT of swimming crabs species were landed different select landing centers which exploited from the Elephant point area (in the Bay of Bengal) at Cox’s Bazaar district. In the total catch, highest landing amount was recorded 23.480 MT (31.45%) at BFDC fish harbour and lowest was 8.520 MT (11.41%) at Shaparir dwip landing center. The highest landing of catch per boat per day (CPUE) was 1.81 kg in Teknaf sadar landing center in May, 11 and the lowest CPUE was 0.18 kg in August, 11 at Shahparir dwip. Lower grade of male crabs were 30-80 gm in weight and female crabs were 40-90 gm constituted 18.0% and 24.0% respectively in total exploitation.

Keywords: Landing centers, Marine swimming crabs, exploitation practice, landing trends, percentage composition and Elephant point area.

 

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