Stock assessment of big eye croaker Pennahia macrophthalamus (Bleeker) (pisces/ Perciformes /Sciaenidae) from Bombay waters

Chakraborty, S K (1996) Stock assessment of big eye croaker Pennahia macrophthalamus (Bleeker) (pisces/ Perciformes /Sciaenidae) from Bombay waters. Indian Journal of Marine Sciences, 25 . pp. 316-319.

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Abstract

Growth, mortality and stock assessment of big eye croaker Pennahia macrophthalamus(Bleeker) is reported in the present communication. The asymptotic length of this species is estimated as 260mrn and growth coefficient 1.20 per year.The total, natural and fishing mortalities were estimated as 3.24, 2.81 and 0.43 respectively.The stock assessment studies were carried out using length cohort and Thompson & Ben model. The result of this study shows that there is no decline in the catch of this species at the present level of exploitation. However, it is observed that even if the fishing efforts are doubled the catch can go up by only 12.74%.Therefore, further increase in the efforts is detrimental to the stock of Pmacrophthalamus and the returns may not be remunerative.

Item Type:Article
Uncontrolled Keywords:Stock assessment; big eye croaker; Pennahia macrophthalamus; Perciformes; Sciaenidae; Bombay
Subjects:Marine Fisheries > Stock Assesment
Demersal Fishes > Sciaenids
Divisions:CMFRI-Cochin > Marine Capture > Demersal Fisheries
ID Code:7033
Deposited By:Arun Surendran
Deposited On:20 Jan 2011 17:39
Last Modified:20 Jan 2011 17:39

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