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Assessment of changes in the cephalopod species composition in landings off Visakhapatnam coast, Andhra Pradesh

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Relation http://eprints.cmfri.org.in/15786/
http://eprints.cmfri.org.in/id/eprint/15784
 
Title Assessment of changes in the cephalopod species composition in landings off Visakhapatnam coast, Andhra Pradesh
 
Creator Laxmilatha, P
Kuriakose, Somy
Rao, M Prasada
Pattnaik, Phalguni
 
Subject Cephalopods
Molluscan Fisheries
 
Description Cephalopods are landed by the large trawlers (12-14
OAL (Overall Length), 98/110 hp), known as sona
boats and the smaller trawlers (9.5-10 OAL, 68/90 hp).
Time series data with respect to catch, catch rate and
species composition of cephalopods (cuttlefish and
squids) off Visakhapatnam coast for the period 1998-
2010 were analysed. The Markov chain model was used
to assess the species dominance to understand the changes and predict the dominance order of different species of cephalopods.Monthly and annual data on the effort and total cephalopod landings by the trawlers based at Visakhapatnam Fisheries Harbour collected by ICAR -CMFRI through a stratified multi-stage random sampling method was used. For estimation of species composition, weekly samples collected during the period were analyzed and appropriately weighted to arrive at monthly and annual landings.
 
Publisher ICAR-Central Marine Fisheries Research Institute
 
Date 2021
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/15786/1/MFIS_250_P%20Laxmilatha_2021.pdf
Laxmilatha, P and Kuriakose, Somy and Rao, M Prasada and Pattnaik, Phalguni (2021) Assessment of changes in the cephalopod species composition in landings off Visakhapatnam coast, Andhra Pradesh. Marine Fisheries Information Service, Technical and Extension Series, 250. pp. 21-22. ISSN 0254-380X