Length-weight relationship and condition factor of bombay duck Harpadon nehereus from landings of fishery ghat, Chittagong

Authors

  • Tasnuba Hasin Department of Fisheries Resources Management, Faculty of Fisheries, Chittagong Veterinary and Animal Sciences University, Chittagong-4225

DOI:

https://doi.org/10.3329/ralf.v3i2.29367

Keywords:

Harpadon nehereus, Length-weight relationship, condition factor, Allometric growth

Abstract

The current study describes the length-weight relationships and condition factor of Bombay duck, Harpadon nehereus from landings of Fishery Ghat, Chittagong. A total of 300 individuals caught by various mesh size of gill nets by commercial fishers were investigated from April 2016 to June 2016. On the basis of hypothetical cube law W=aLb, the variance of b for both total length and standard length were estimated statistically (0.0090 and 0.0088 respectively). Using the value of t=1.96 at the 95% confidence limits for b were estimated as 2.218 to 2.590 for total length-weight relationship and for standard length-weight relationship, 1.985 to 2.353 which indicated allometric growth pattern for both cases. The monthly relative condition factor during three months of observation (0.978, 1.033, and 1.097) showed no notable difference due to spawning strain, spent condition and lower feeding rate right after peak spawning season.

Res. Agric., Livest. Fish.3(2): 355-360, August 2016

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Author Biography

Tasnuba Hasin, Department of Fisheries Resources Management, Faculty of Fisheries, Chittagong Veterinary and Animal Sciences University, Chittagong-4225



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Published

2016-08-19

How to Cite

Hasin, T. (2016). Length-weight relationship and condition factor of bombay duck Harpadon nehereus from landings of fishery ghat, Chittagong. Research in Agriculture Livestock and Fisheries, 3(2), 355–360. https://doi.org/10.3329/ralf.v3i2.29367

Issue

Vol. 3 No. 2 (2016)

Section

Fisheries

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