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Combining surplus production and spectral models to define fishery management advisory - a case study using the threadfinbream fishery along Kerala coast

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Title Combining surplus production and spectral models to define fishery management advisory - a case study using the threadfinbream fishery along Kerala coast
 
Creator G. B. SREEKANTH1, P. U. ZACHARIA2, T. V. SATHIANANDAN2, SAIBY THOMAS2 N. MANJU LEKSHMI1 AND N. P. SINGH1
 
Subject Kerala, Maximum sustainable yield, Spectral model, Surplus production model, Threadfinbreams
 
Description Not Available
Threadfinbreams have emerged as a very important resource along the west coast of India both as food fish and as raw
material for export oriented surimi production. The state of Kerala contributes 30-40% of the total threadfinbream
production in the country landed mainly by multiday trawlers. The analysis of the catch and effort of threadfinbreams during
1985-2012 along Kerala revealed that the landing recently showed decline despite increased fishing effort. A simulation
study was conducted to examine the effects of restrictions imposed on the total hours of operation of multiday trawlers on
the threadfinbream fishery of Kerala. A genetic algorithm was used for simulation of threadfinbream fishery along Kerala
coast using surplus production model and spectral time series methods. Numerical simulations were made for selected
seven levels of exploitation and the average biomass and average yield were calculated and compared with the maximum
sustainable yield (MSY). The results indicated that the optimum level of exploitation is at 85.1% of the current level of
exploitation to keep the average annual yields during 2013-2020 just below MSY
Not Available
 
Date 2018-11-09T05:51:39Z
2018-11-09T05:51:39Z
2015-04-01
 
Type Research Paper
 
Identifier Not Available
0970-6011
http://krishi.icar.gov.in/jspui/handle/123456789/9860
 
Language English
 
Relation Not Available;
 
Publisher Not Available