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Temporal patterns in cephalopod catches and application of non-equilibrium production model to the cephalopod fishery of Karnataka

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Title Temporal patterns in cephalopod catches and application of non-equilibrium production model to the cephalopod fishery of Karnataka
 
Creator Sasikumar, Geetha
Mohamed, K. Sunil
 
Subject Cephalopods
Karnataka
Limit Reference Points
Non-Equilibrium Production Models.
 
Description 134-140
Non-equilibrium
production models were fitted to cephalopod
catch and effort statistics to arrive at limit reference points (LRP), YMSY and fMSY.
The parameter estimates, K (carrying capacity), r (intrinsic rate of
population growth) and q (catchability coefficient) were 93,677 t,
0.403 per year, 8.614E-08 for Schaefer model. Estimated precautionary limit YMSY, was 9,446 t and the
corresponding fMSY
was 24,94,611 h. Despite the fact that the 2007 catches are currently around
the YMSY, the
current effort, fnow
expended in the trawling ground is 29,32,214 h for a trawling period of 97.4 h
per multi-day fleet (MDF) trip. Fishing effort is 28% in excess of the
precautionary target, f0.1 estimated at 21,07,060 h as well as
20% above the LRP for sustaining the fishery at MSY levels. It is recommended
that trawling effort for the MDF be reduced so that the long-term catches of
cephalopods correspond to the YMSY
levels in the present fishing area.
 
Date 2012-04-03T09:57:57Z
2012-04-03T09:57:57Z
2012-04
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/13767
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.41(2) [April 2012]