A study on the population dynamics of Labeo rohita (Hamilton) in the Sylhet basin, Bangladesh


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Authors

  • S M Nurul Amin Bangladesh Fisheries Research Institute, Riverine Station, Chandpur-3602, Bangladesh
  • A K Yousuf Haroon Bangladesh Fisheries Research Institute, Riverine Station, Chandpur-3602, Bangladesh
  • M Alam Bangladesh Fisheries Research Institute, Riverine Station, Chandpur-3602, Bangladesh

Abstract

Data collected on the population parameters of Labeo rohita (Hamilton) from theSylhet basin, north-eastern part of Bangladesh were analysed using lengthfrequencybased FiSAT software. The von Bertalanffy growth parameters L°° andK for the species were 80.20 cm and 0.41/year respectively. The annual rate ofnatural (M), fishing (F) and total mortality (Z) were found to be 0.73, 0.83 and1.56 respectively. The estimated rate of exploitation (E) is 0.52. Recruitment ofthis species into the fishery takes place during April - June and October - Novemberwith peaks during May and October. Emix was found to be 0.4452. The relationshipbetween the total length and body weight was found to be W =0.08998TL2"51. Thepresent investigation showed that the overfishing mortality (E>0.50) conditionsignificantly lowers the population of L. rohita in the Sylhet basin.

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Author Biographies

  • S M Nurul Amin, Bangladesh Fisheries Research Institute, Riverine Station, Chandpur-3602, Bangladesh
    Bangladesh Fisheries Research Institute, Riverine Station,Chandpur-3602, Bangladesh
  • A K Yousuf Haroon, Bangladesh Fisheries Research Institute, Riverine Station, Chandpur-3602, Bangladesh
    Bangladesh Fisheries Research Institute, Riverine Station,Chandpur-3602, Bangladesh
  • M Alam, Bangladesh Fisheries Research Institute, Riverine Station, Chandpur-3602, Bangladesh
    Bangladesh Fisheries Research Institute, Riverine Station,Chandpur-3602, Bangladesh

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Issue

Vol. 48 No. 3 (2001)

Section

Articles

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The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Amin, S. M. N., Haroon, A. K. Y., & Alam, M. (2011). A study on the population dynamics of Labeo rohita (Hamilton) in the Sylhet basin, Bangladesh. Indian Journal of Fisheries, 48(3), 291-296. https://epubs.icar.org.in/index.php/IJF/article/view/8408