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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2018, Vol. 6, Issue 4, Part F

Sex ratio, length-weight relationship, condition and relative condition factor of mud crab (Scylla olivacea) in Sunderban mangrove forest, Bangladesh


Author(s): Sheik Istiak Md. Shahriar and Muhammad Abdur Rouf

Abstract: This study was attempted to determine the basic biological information on Scylla olivacea collected from Sunderban mangrove forest, Bangladesh during a period of May-October 2016. The average length of male and female crabs was 87.48 mm and 79.86 mm with an average weight of 173.15 g and 97.15 g, respectively. Although the sex ratio of this species remained uneven throughout the study, highest (male: female=1:3) was recorded in 70-79 mm size range. In length-weight relationship, the coefficient determinant (r2) for male was 96.5%, for female was 98.2%, and for combined sexes was 93.9%. The value of exponential ‘b’ at 95% confidence interval was 3.222-3.45 in male, 2.618-2.748 in female and 3.06-3.261 in combined sexes. A strong positive correlation was observed in length-weight relationship of three different sexes. The value b observed in combined sexes resulted that the growth of these organisms was close to isometrics. The average condition factor (K) in male was 0.025 and in female was 0.019 and but the Kn of male was 0.0000057 and female was 0.00014. The obtained K value suggested, males were much heavier than female at the same length. However, this study will be helpful to understand the biological status of Scylla olivacea fishery in Sunderban mangrove forest, Bangladesh which ultimately could be used in the management of mud crab resources in this forest.

Pages: 451-455  |  481 Views  23 Downloads

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How to cite this article:
Sheik Istiak Md. Shahriar and Muhammad Abdur Rouf. Sex ratio, length-weight relationship, condition and relative condition factor of mud crab (Scylla olivacea) in Sunderban mangrove forest, Bangladesh. International Journal of Fisheries and Aquatic Studies. 2018; 6(4): 451-455.
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