Contact: +91-9711224068
International Journal of Fisheries and Aquatic Studies
  • Printed Journal
  • Indexed Journal
  • Refereed Journal
  • Peer Reviewed Journal


E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2022, Vol. 10, Issue 5, Part A

Spawning, length-growth, mortality and exploitation rate of galeoides decadactylus exploited from the artisanal fisheries of Sierra Leone


Author(s): Komba J Konoyima, Lahai D Seisay and Percival AT Showers

Abstract: 865 specimens of Galeoides decadactylus were analysed for spawning, length-growth, mortality and exploitation rates in May-October 2020, to support with management information. Gonads were macroscopically assessed and total length-frequencies analysed from growth models in FiSAT II software. Gonadosomatic Index of the assessed stock peaked in October alongside Hepatosomatic Index, and attained first sexual maturity at lengths 19.8 cm (female) and 25.7 cm (male,). Infinity length (L∞) was 43.3 cm, growth rate (K), 0.34 yr-1), theoretical age (t0), -0.7 years, lifespan (tmax), 8.1 years and growth exponent (b), 2.78. Total (Z), natural (M) and fishing mortality (F) rates gave 1.58 year-1, 0.77 year-1 and 0.81 year-1 respectively, whereas the current exploitation rate (Ecurrent) was 0.51 year-1. The optimum fishing effort (Fopt) and fishing limit (Flimit) were 0.31 year-1 and 0.51 year-1 respectively. Results implied occurrence of major spawning in October, negative allometric growth, short lifespan and high fishing pressure on the stock. Recalibration of management measures is advised.

DOI: 10.22271/fish.2022.v10.i5a.2725

Pages: 22-27  |  73 Views  17 Downloads

Download Full Article: Click Here

How to cite this article:
Komba J Konoyima, Lahai D Seisay, Percival AT Showers. Spawning, length-growth, mortality and exploitation rate of galeoides decadactylus exploited from the artisanal fisheries of Sierra Leone. Int J Fish Aquat Stud 2022;10(5):22-27. DOI: https://doi.org/10.22271/fish.2022.v10.i5a.2725
Call for book chapter
International Journal of Fisheries and Aquatic Studies