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Mesh selectivity studies for management of marine fishery resources in India

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Relation http://eprints.cmfri.org.in/1198/
 
Title Mesh selectivity studies for management of marine fishery resources in India
 
Creator Alagaraja, K
Suseelan, C
Muthu, M S
 
Subject Fisheries Management
 
Description Mesh selectivity studies on commercially important species are essential to identify the fishable
segment of the stock. This is required for assessing the effect of fishing effort on the exploited stocks and
suggesting effective management measures for maximum sustainable yield.
The present paper attempts to give a general review of the work done in this sphere. At centres like
Kakinada (Andhra Pradesh) change in the cod - end mesh size in trawls over the years has resulted in considerable
variations in production, catch composition and size distribution of commercially important
species of shrimps. Instances of heavy landings of undersized prawns (penaeids less than 65 mm TL) have
been noticed during the peak landing period along the coast of Kerala particularly at Sakthikulangara and
it is partly attributed to the smaller mesh size of the trawls operated there. Considerable quantities of juvenile
prawns of the marine species are caught from the estuaries and backwaters using stake nets having cod - end
mesh sizes as low as 5 mm which in turn will adversely affect the recruitment of the species in the marine
sector.
Experimental studies on mesh selectivity of gill nets for oil sardine, and of trawls for shrimps in
Kerala and of dol nets for Bombayduck in Maharashtra and Gujarat clearly indicate the necessity of mesh
regulation for the judicious exploitation of these resources. Stock assessment studies carried out on
shrimps along the southwest coast of India also emphasise the urgent need for an upward revision of the
existing cod - end mesh size of 20 - 25 mm to atleast 30 mm in order to save the fishery from the danger
of depletion.
 
Publisher MBAI
 
Date 1986
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1198/1/Alag_202-212.pdf
Alagaraja, K and Suseelan, C and Muthu, M S (1986) Mesh selectivity studies for management of marine fishery resources in India. Journal of the Marine Biological Association of India, 28 (1&2). pp. 202-212.