Population dynamics of the geographically defined metapopulations of brown shrimp Metapenaeus monoceros (Fabricius, 1798) from Indian waters


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Authors

  • A. P. Dineshbabu CMFRI
  • P. T. Sarada CAR-Central Marine Fisheries Research Institute, Regional Station, Chennai, Tamil Nadu
  • G. Maheswarudu ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala
  • S. Lakshmi Pillai ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala
  • Gyanranjan Dash ICAR-Central Marine Fisheries Research Institute, Field Centre, Puri, Odisha
  • Indira Divipala ICAR-Central Marine Fisheries Research Institute, Regional Centre, Visakhapatnam, Andhra Pradesh. 530 003.
  • Rajan Kumar ICAR-Central Marine Fisheries Research Institute, Regional Station, Veraval, Gujarat. 362 267
  • Rekha Devi Chakraborty ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala.682018
  • M. Rajkumar ICAR-Central Marine Fisheries Research Institute, Regional Centre, Mandapam, Tamil Nadu. 623 520.
  • J. Jayasankar ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala.682018
  • R. Ratheeshkumar
  • K. N. Saleela ICAR-Central Marine Fisheries Research Institute, Regional Centre, Vizhinjam, Kerala, 695 521
  • Rajendra Naik
  • Josileen Jose

https://doi.org/10.21077/ijf.2022.69.4.118663-01

Abstract

Population dynamics of the brown shrimp Metapenaeus monoceros (Fabricius, 1798) was studied along the Indian coast using
catch and effort data of trawlers from 8 States and 2 Union Territories for the period 2007-2015. Classical length-based
stock assessment methods and spatial database of the shrimp catch were used to derive fishing ground related conclusions.
Inclusion of spatial data revealed the possibility of existence of metapopulations of M. monoceros in the region. Maximum
sustainable yield (MSY) cannot be a reasonable reference point for deciding the fishing pressure in M. monoceros. By
analysing stock fluctuations noticed during the study period with varying spawning stock biomass combinations, retention
of 40% spawning biomass seems to be a safe option for sustaining M. monoceros production from Indian waters. Based
on this, the study recommends reduction of fishing pressure along north-west, south-west and northeast coast by 70, 60 and
70% respectively from the base level of effort in 2017. The study illustrates that the spatial data from fishing ground, can
serve as an additional tool to derive management options. The study also emphasises the need for further investigations
on the possibilities of metapopulations of M. monoceros which is widely distributed in all agro-climatic zones along the Indian coast.
Keywords: Indian coast, Metapopulation, M. monoceros, Spatial study, Stock assessment

Author Biographies

  • A. P. Dineshbabu, CMFRI

    Principal  Scienist

  • P. T. Sarada, CAR-Central Marine Fisheries Research Institute, Regional Station, Chennai, Tamil Nadu

    Principal Scienctist

  • G. Maheswarudu, ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala

    Principal Scientist, Retired

  • S. Lakshmi Pillai, ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala

    Principal Scientist

  • Gyanranjan Dash, ICAR-Central Marine Fisheries Research Institute, Field Centre, Puri, Odisha
    Senior Scienstis

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Submitted

2021-12-04

Published

2022-12-31

Issue

Section

Articles

How to Cite

A. P. Dineshbabu, P. T. Sarada, G. Maheswarudu, Pillai, S. L., Dash, G., Divipala, I., Kumar, R., Chakraborty, R. D., M. Rajkumar, J. Jayasankar, R. Ratheeshkumar, K. N. Saleela, NAIK, R., & Jose, J. (2022). Population dynamics of the geographically defined metapopulations of brown shrimp Metapenaeus monoceros (Fabricius, 1798) from Indian waters. Indian Journal of Fisheries, 69(4). https://doi.org/10.21077/ijf.2022.69.4.118663-01