Journal of the Marine Biological Association of India

Tuna resources of the Madras Coast with a note on the growth parameters of Euthynnus affinis (Cantor)

Volume 36 Issue 1&2

S. Srinivasarengan, M. D. K. Kuthalingam and E. Vivekanandan

Abstract

During the years 1981-1986, an estimated annual average catch of 25 tunas were landed by gill nets operated from commercial mechanized vessels from the Kasimedu landing centre, Madras, where all the catches from mechanised. Vessels land. This catch was obtained by expending annual average of 18,209 fishing hours with a catch rate of 1.4 kg/hr. It was observed that the maximum catch and catch rate were during April. Of the five species that constituted the fishery, Euthynnus affinis (79.9%) dominated the catch followed by Katsuwonus pelamis (12.4%), Thunnus albacares, Auxis thazard and Sarda orientalis formed the rest of the catch. The von Bertalanffy parameters of growth were calculated for E.affinis by length frequency method and the values were compared with those obtained for the species from other regions.

Based on the data collected during the  6 year period, Maximum  sustainable yield and optimum fishing effort were estimated for tunas in the commercial fishing grounds off Madras (12.80/4C, 5C and 6C, 13.80/1C, 2C, 3C and 4C). The MSY was 27 tonnes and optimum fishing effort was 17,826 hours. These estimations reveal that the tuna stock of the inshore area off Madras may not stand to any further increase in fishing effort.

Date : 30-12-1994

Contact us

The Marine Biological Association of India

PB No. 1604, CMFRI Campus,
Kochi-682 018, Kerala State, India
Tel : +91 484 2394420, 2394867
Fax : +91 484 2394909
Email : mail@mbai.org.in

Founding Address

The Marine Biological Association of India

C/o Mandapam Regional Centre of CMFRI
Marine Fisheries P. O, Mandapam Camp,
Ramanathapuram District, Tamil Nadu- 623 520

Follow Us

Visitors count

MBAI © The Marine Biological Association of India. All Rights Reserved

Website Powered by Cloud Business Pages from INI Technologies Pvt Ltd., India, Kochi