Estimates of mortality, population size and yield per Recruit of Nemipterus japonicus (Bloch) in the Trawling grounds off Kakinada

Murty, V Sriramachandra (1983) Estimates of mortality, population size and yield per Recruit of Nemipterus japonicus (Bloch) in the Trawling grounds off Kakinada. Indian Journal of Fisheries, 30 (2). pp. 255-260.

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Abstract

The mortality rates of N. japonicus are estimated from annual age composition of fish caught by trawlers. The estimated values are Z = 1.86, F = 0.72 and M = 1.14. The exidoitatlon rate (U) is estimated at 0.33 and the total annual stock at 1181 tonnes. The yield curve shows that the fishing mortality can be increased from the present level of 0.72 to 1.75 to get increased yield.

Item Type:Article
Uncontrolled Keywords:Estimates; mortality; Nemipterus japonicus; Kakinada
Subjects:Marine Environment > Fish Mortality
Marine Fisheries > Estimation
Divisions:CMFRI-Cochin > Marine Capture > Demersal Fisheries
ID Code:490
Deposited By:Dr. V Mohan
Deposited On:10 May 2010 16:15
Last Modified:10 May 2010 16:15

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