Population dynamics of Bombay duck Harpodon nehereus (Hamilton, 1822) of the Bay of Bengal along Bangladesh coast

Authors

  • MN Sarker Bangladesh Marine Fisheries Capacity Building Project, Department of Fisheries, Matshya Bhaban, 13, Shahid Captain Monsur Ali Sarani, Ramna, Dhaka-1000
  • Md Humayun Center for Development Initiatives in Capture Fisheries (CDICF), 27/A, Siddeshwari Lane, Ramna, Dhaka-1217
  • Md Atiar Rahman Bangladesh Marine Fisheries Capacity Building Project, Department of Fisheries, Matshya Bhaban, 13, Shahid Captain Monsur Ali Sarani, Ramna, Dhaka-1000
  • Md Sharif Uddin Bangladesh Marine Fisheries Capacity Building Project, Department of Fisheries, Matshya Bhaban, 13, Shahid Captain Monsur Ali Sarani, Ramna, Dhaka-1000

DOI:

https://doi.org/10.3329/bjz.v45i2.35705

Keywords:

Asymptotic length, growth coefficient, mortality, virtual population analysis, recruitment pattern, exploitation rate, Harpadon nehereus

Abstract

Population parameters of Harpadon nehereus were estimated using FiSAT-II. length-frequency data collected from different landing centers along the coast of Bangladesh. The Von Bertalanffy growth parameters L∞and K for the species were 45.05 cm and 1.30/year, respectively. The annual rate of natural mortality (M) and fishing mortality (F) were found to be 1.86 and 2.58, respectively. The estimated value of the exploitation rate (E) using the lengthconverted catch curve was 0.58 and E max was found to be 0.582. The recruitment pattern of this species was continuous and two peaks per year. The present investigation clearly showed the over fishing (E > 0.50) condition for H. nehereus in Bangladesh. The estimated length-weight relationship for the combined sex was found to be W = 0.003199 L3.

Bangladesh J. Zool. 45(2): 101-110, 2017

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Author Biography

MN Sarker, Bangladesh Marine Fisheries Capacity Building Project, Department of Fisheries, Matshya Bhaban, 13, Shahid Captain Monsur Ali Sarani, Ramna, Dhaka-1000



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Published

2018-02-25

How to Cite

Sarker, M., Humayun, M., Rahman, M. A., & Uddin, M. S. (2018). Population dynamics of Bombay duck Harpodon nehereus (Hamilton, 1822) of the Bay of Bengal along Bangladesh coast. Bangladesh Journal of Zoology, 45(2), 101–110. https://doi.org/10.3329/bjz.v45i2.35705

Issue

Vol. 45 No. 2 (2017)

Section

Articles