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Preliminary results of the trials using square mesh panels in trawl codend along Cochin coast, Kerala

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Title Preliminary results of the trials using square mesh panels in trawl codend along Cochin coast, Kerala
Not Available
 
Creator Nabeesa, P.A.
Madhu, V.R.
Kumar, B.M.
Leela Edwin
 
Subject Not Available
 
Description Not Available
Bycatch is an important issue in shrimp trawling. The ratio of shrimp to bycatch generated during shrimp trawling is reported to be as high as 1 colon 7 along the South west coast of India. Increasing the size or shape
of the meshes of the codend is often attempted to improve the selectivity of the gear. This study reports the preliminary results of the trials carried out using square mesh panel in a shrimp trawl. The study was conducted onboard Departmental Vessel FV Matsyakumari-II of ICAR-CIFT, during November 2016 to May 2017, in the
commercial fishing grounds of single day fishing trawlers. The depth of the trawling area was between 10 and 30 m. The experimental net consisted of a 40 mm square mesh panel of (1x1 m) dimension, which was approximately 8.5 per cent of the total area of the codend, inserted on the dorsal of the forward part of the codend. The opening of the panel was covered using 10 mm polyamide webbing to quantify the escapees.
A total of 15 valid hauls were carried out using the experimental net. The average catch was 6.23 kilogram per hour and the mean escapement from the square mesh panel was 0.15 kilogram per hour (3.38 per cent of total catch). The top five species that escaped through the meshes of the square mesh panel were Ambassis gymnocephalus (26.94 per cent), Stolephorus sp. (21.65 per cent ), Metapenaeus dobsoni (13.59 per cent), Oratosquilla nepa (7.06 per cent), and Alepes kleinii (6.45 per cent). The implications of the results and the
recommendations for optimum mesh size to be used in the panels are discussed.
Not Available
 
Date 2019-11-25T07:08:43Z
2019-11-25T07:08:43Z
2017-11-21
 
Type Other
 
Identifier Nabeesa, P.A.,Madhu, V.R.,Kumar, B.M. and Leela Edwin (2017) Preliminary results of the trials using square mesh panels in trawl codend along Cochin coast, Kerala. In: (Thomas, S.N., Rao, B.M., Madhu, V.R., Asha, K.K., Binsi, P.K., Viji, P., Sajesh, V.K. and Jha, P.N., Eds.) Fostering Innovations in Fisheries and Aquaculture: Focus on Sustainability and Safety – Book of Abstracts, 11th Indian Fisheries and Aquaculture Forum, ICAR-Central Institute of Fisheries Technology, Kochi and Asian Fisheries Society, Indian Branch, 21-24 November, 2017, Kochi, India, pp. 108-109.
978-81-933623-1-0
http://krishi.icar.gov.in/jspui/handle/123456789/25217
 
Language English
 
Relation Not Available;
 
Publisher ICAR-Central Institute of Fisheries Technology, Kochi and Asian Fisheries Society, Indian Branch