ESTIMATES OF MORTALITY AND YIELD PER RECRUIT OF 'GHOL' PSEUDOSCIAENA DIACANTHUS (LACEPEDE)


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Authors

  • K Venkata Subba Rao Central Marine Fisheries Research Institute; Sub-station, Visakhapatnam

Abstract

The mortality rate and yield per recruit of 'ghoV, Pseudosciaena diacanthus, are
estimated from the age composition of catches of the bull-trawlers of the New India
Fisheries Ltd., Bombay, for the years 1958 to 1961.
The annual mortality rate estimated from (1) catch per unit effort data and (2) the
average catch curve of 1958-'61 lies roughly between 0.55 and 0.60 and the instantaneous
mortality rate between 0.83 and 0.87. Since the fishery for 'ghol' was at the beginning
stage with only two pairs of bull-trawlers operating commercially, the estimated
total mortality rate (Z=0.83) is regarded as practically equal to natural mortality
rate (M).

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Author Biography

  • K Venkata Subba Rao, Central Marine Fisheries Research Institute; Sub-station, Visakhapatnam
    Central Marine Fisheries Research Institute; Sub-station, Visakhapatnam

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How to Cite

Rao, K. V. S. (2011). ESTIMATES OF MORTALITY AND YIELD PER RECRUIT OF ’GHOL’ PSEUDOSCIAENA DIACANTHUS (LACEPEDE). Indian Journal of Fisheries, 15(1 & 2), 88-98. https://epubs.icar.org.in/index.php/IJF/article/view/13279