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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (457) Last page : (461)
Article doi: : http://dx.doi.org/10.18782/2320-6965

Study on Compartive Impact of 28 mm Square Mesh and Diamond Mesh Codends in High Opening Bottom Trawl (Hobt) on Selceted Fin Fishes off Mangalore Coast

N. A. Talwar*, B. Hanumanthappa, Suman Das and Shiv Mohan Singh

Department of Fishery Engineering, Faculty of Fishery Sciences, WBUAFS, Kolkata
*Corresponding Author E-mail: natalwar@gmail.com
Received: 5.07.2018 | Revised: 14.08.2018 | Accepted: 23.08.2018  

 

 ABSTRACT

Investigations were carried out to study the comparative impact of 28mm square meshes and diamond meshes in codends of High Opening Bottom Trawl (HOBT) on different sizes of dominant fin fishes. The fishing trials were carried out through the M.F.V. Doplhin, a 13.26m OAL wooden stern trawler, fitted with Ruston engine developing 102 BHP at 1800r.p.m.of College of fisheries (UAS) Mangalore. Alternative haul techniques were followed under identical condition to provide the equal chance for both the trawls. The results shown that the 50% of retention lengths of Mackerels and Soles were comparatively found better in high opening bottom trawl (HOBT) with 28mm mesh size square mesh codend and for clupeids (Sardinella spp.) and Silver bellies (Leiognathus spp.) were same in both the codends of square mesh and diamond mesh of same mesh size in high opening bottom trawl (HOBT).

Key words: High opening bottom trawl (HOBT); Square mesh; Diamond mesh; Finfishes and 50% of retention length.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Talwar, N.A., Hanumanthappa, B., Das, S. and Singh, S.M., Study on Compartive Impact of 28 mm Square Mesh and Diamond Mesh Codends in High Opening Bottom Trawl (Hobt) on Selceted Fin Fishes off Mangalore Coast, Int. J. Pure App. Biosci.6(5): 457-461 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6965