Growth parameters of Chrysichthys nigrodigitatus (Lacépède, 1803) and Chrysichthys maurus (Valenciennes, 1840) in Buyo Lake (Middlee - West: Côte d’Ivoire)
1 Department of Environment, Jean Lorougnon Guédé University, Daloa city (Côte d’Ivoire) P.O. Box 150 Daloa, Côte d’Ivoire.
2 Department of Agrororestry, Jean Lorougnon Guédé University, Daloa city (Côte d’Ivoire) P.O. Box 150 Daloa, Côte d’Ivoire.
Research Article
GSC Advanced Research and Reviews, 2023, 16(01), 260–267.
Article DOI: 10.30574/gscarr.2023.16.1.0285
Publication history:
Received on 12 May 2023; revised on 17 July 2023; accepted on 20 July 2023
Abstract:
The growth parameters of Chrysichthys nigrodigitatus and Chrysichthys maurus were estimated in Buyo Lake. The study covered 1070 individuals collected monthly between August 2019 and July 2020, including 630 Chrysichthys nigrodigitatus with sizes between 4 cm Ls and 55 cm Ls and 440 Chrysichthys maurus individuals with sizes between 12 cm Ls and 59 cm Ls. The values of L∞, K and Φ' are 69.35 cm; 0.78 yr-1 and 3.57 yr for Chrysichthys nigrodigitatus respectively. The longevity is 3.84 years with a To equal to -0.16 while in Chrysichthys maurus, the longevity is 4.68 years with a To equal to -0.21. The values of L∞, K and Φ' for this species are 61.42 cm; 0.68 yr-1 and 3.38 yr, respectively. Both species exhibit long lifetimes.
Keywords:
Chrysichthys nigrodigitatus; Chrysichthys maurus; Growth parameters; Buyo Lake; Côte d’Ivoire.
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Copyright © 2023 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0
