Fishery, biology and population dynamics of Nemipterus japonicus (Bloch) off Visakhapatnam


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Authors

  • U Rajkumar Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam 530 003, India
  • K Narayana Rao Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam 530 003, India
  • H Jose Kingsly Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam 530 003, India

Abstract

Threadfin breams formed 9% of the total small trawler catches of
Visakhapatnam, Nemipterus mesoprion and N. japonicus being the dominant
species. The estimated growth parameters for N. japonicus are L = 340 mmn and K = 0.52 year-1. Size at first maturity is estimated as 128 mm. The species spawns during July to April with a peak in September. The mortality rate Z, F and M were 3.52, 2.41 and 1.11 respectively.

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Author Biographies

  • U Rajkumar, Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam 530 003, India
    Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam
    530 003, India
  • K Narayana Rao, Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam 530 003, India
    Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam
    530 003, India
  • H Jose Kingsly, Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam 530 003, India
    Regional Centre of Central Marine Fisheries Research Institute, Visakhapatnam
    530 003, India

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Issue

Vol. 50 No. 3 (2003)

Section

Articles

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How to Cite

Rajkumar, U., Rao, K. N., & Kingsly, H. J. (2011). Fishery, biology and population dynamics of Nemipterus japonicus (Bloch) off Visakhapatnam. Indian Journal of Fisheries, 50(3), 319-324. https://epubs.icar.org.in/index.php/IJF/article/view/7639