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Exploitation of penaeid shrimp resources by small mechanised trawlers off Visakhapatnam, Andhra Pradesh

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Relation http://eprints.cmfri.org.in/10477/
 
Title Exploitation of penaeid shrimp resources by small mechanised trawlers
off Visakhapatnam, Andhra Pradesh
 
Creator Maheswarudu, G
Sreeram, Miriam Paul
Dhanwanthari, E
Varma, J B
Sajeev, C K
Rao, S Satya
 
Subject Crustacean Fisheries
Marine Fishing
 
Description Small trawlers (9-11 m OAL) fit for short-term cruises (2-7 days) exploit penaeid shrimps up to a depth of 70 m in the Bay
of Bengal off Visakhapatnam both in the northern and southern directions. During the period 2001 to 2010, average annual
fishing effort was 5,97,412 h. Penaeid shrimp catch varied from 703 t to 4,323 t with average catch per hour (cph) being
3.54 kg. The contribution of penaeid shrimps to total fish landings ranged from 6.7 to 18.32%, both fishing effort and landings
of the resource showing increasing trend. Penaeid shrimp landing was supported by 24 species, dominated by Metapenaeus
monoceros followed by Metapenaeus dobsoni. Mean annual species composition and cph for each species were estimated
for two spells i.e., 2001 to 2005 and 2006 to 2010. Catch per hour for five species declined whereas it increased for the
rest 19 species. The cph for penaeid shrimps increased by 103% from spell 1 to spell 2. Expected catch for each year was
estimated by Schaefer production model (CEDA; r2=0.72) which showed that the resource was under exploitated during
2001-2005 and overexploited during 2006-2010, which indicate the necessity for restricting fishing effort at present level.
 
Date 2015
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/10477/6/Maheswarudu_IJF_62_2_7-13.pdf.pdf.pdf
Maheswarudu, G and Sreeram, Miriam Paul and Dhanwanthari, E and Varma, J B and Sajeev, C K and Rao, S Satya (2015) Exploitation of penaeid shrimp resources by small mechanised trawlers off Visakhapatnam, Andhra Pradesh. Indian Journal of Fisheries, 62 (2). pp. 7-13.