Size selectivity of diamond and square mesh codends for largehead hairtail Trichiurus lepturus Linnaeus, 1758
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Authors
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Govathoti Rajeswari
Visakhapatnam Research Centre of Central Institute of Fisheries Technology
Ocean View Layout, Pandurangapuram
Visakhapatnam-530 003, Andhra Pradesh, India
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R. Raghu Prakash
Visakhapatnam Research Centre of Central Institute of Fisheries Technology
Ocean View Layout, Pandurangapuram
Visakhapatnam-530 003, Andhra Pradesh, India
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U Sreedhar
Visakhapatnam Research Centre of Central Institute of Fisheries Technology
Ocean View Layout, Pandurangapuram
Visakhapatnam-530 003, Andhra Pradesh, India
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M. Swamy Kumar
Abstract
Trawl codend mesh selectivity with respect to largehead hairtail Trichiurus lepturus was studied along Andhra Pradesh coast. Covered codend method was used to obtain the selectivity data. The L25, L50 and L75 values for 40 mm square mesh codend were 30.75, 36.2 and 41.65 mm respectively with the selection range, selection factor and selection ratio being 10.9 and 9.05 and 0.30 respectively. The L25, L50 andL75 values for 40 mm diamond mesh codend were 25.96, 33.4 and 40.95 mm, the selection range, selection factor and selection ratio being 14.9, 8.35 and 0.44 respectively The retention mean length in square mesh was found to be greater than diamond mesh. The square mesh was also found to be more efficient in eliminating juveniles than conventional diamond mesh codend .Downloads
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Submitted
2013-04-08
Published
2013-12-31
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Copyright (c) 2014 Indian Journal of Fisheries
This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.
The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.How to Cite
Rajeswari, G., Raghu Prakash, R., Sreedhar, U., & Swamy Kumar, M. (2013). Size selectivity of diamond and square mesh codends for largehead hairtail Trichiurus lepturus Linnaeus, 1758. Indian Journal of Fisheries, 60(4). https://doi.org/10.21077/
