Population parameters of Pennahia anea and Nibea maculata in the Palk Bay/Gulf of Mannar area, India

Jayasankar, P. (1997) Population parameters of Pennahia anea and Nibea maculata in the Palk Bay/Gulf of Mannar area, India. Naga, the ICLARM Quarterly, 20(2), pp. 46-48.

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Abstract

The population parameters of the two most abundant sciaenids comprising the trawl catch in the Palk Bay/Gulf of Mannar area are presented. The following parameters were estimated: 233 mm (L sub( infinity )), 1.26 yr super(1) (K), -0.08 yr (t sub(0)), 4.24 yr super(1) (Z) and 2.24 yr super(1)(M) for Pennahia anear, 284 mm (L sub( infinity )), 1.08 yr super(1) (K), -0.05 yr (t sub(0)), 4.41 yr super(1) (Z) and 1.92 yr super(1) for Nibea maculata. Length at first capture was 97 mm for P. anea and 124 mm for N. maculata. These lengths were noted to be less than the corresponding length at first maturity for both species. The exploitation rates (E) derived indicate that the two species are heavily fished, which may account for the decline in sciaenid catches from 1988 to 1992.

Item Type: Article
Title: Population parameters of Pennahia anea and Nibea maculata in the Palk Bay/Gulf of Mannar area, India
Personal Creator/Author:
CreatorsEmail
Jayasankar, P.
Journal or Publication Title: Naga, the ICLARM Quarterly
Volume: 20
Number: 2
Page Range: pp. 46-48
Date: 1997
ISSN: 0116-290X
Issuing Agency: WorldFish Center
Uncontrolled Keywords: Population dynamics; Length-weight relationships; Sexual maturity; Catch composition; Exploitation; Catch/effort; Trawling; Palk Strait; Mannar Gulf; India; Pennahia anea; Nibea maculata
Subjects: Fisheries
Item ID: 9255
Depositing User: Mr William Ko
Date Deposited: 30 Nov 2012 08:41
Last Modified: 30 Nov 2012 08:41
URI: http://aquaticcommons.org/id/eprint/9255

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