27Sep 2017

SEASONAL VARIATIONS IN CONDITION FACTOR OF TWO FRESHWATER FISH SPECIES BELONGING TO THE GENUS SCHILBE OKEN, 1817 (SCHILBE MANDIBULARIS AND S. INTERMEDIUS) IN AN ESTUARINE ECOSYSTEM, AGHIEN LAGOON (C?TE D?IVOIRE, WEST AFRICA).

  • Department of Environment, Jean Lorougnon Gu?d? University, Daloa City (C?te d?Ivoire).
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We studied changes in condition factor (CF) of two fish species belonging to the genus Schilbe: Schilbe mandibularis and S. intermedius in the estuarine system of Aghien Lagoon. Fish populations were sampled monthly during one year from July 2014 to June 2015. Samplings were performed by experimental fishing using gillnets. Means of condition factor were determined for the four climatic seasons that characterize the study site. Results indicated that the global condition factor including both climatic seasons was significantly higher in S. mandibularis than that obtained in S. intermedius (p˂0.05). Condition factor showed high variations (p˂0.05) between climatic seasons in S. mandibularis. The highest average (CF = 2.83) was recorded in the long dry season while the lowest (CF = 0.09) was obtained in the short dry season. Concerning S. intermedius, condition factor showed relatively low variations but differed significantly (p˂0.05) between climatic seasons. The highest average (CF = 0.80) occurred in the long wet season while the lowest (CF = 0.16) occurred in the long dry season. We concluded that the condition factor of these two species exhibited very different seasonal trends in the Aghien Lagoon.

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[Gustave N?guessan ALIKO, Charles Koffi BOUSSOU, F?lix Koffi KONAN and Yves Kotchi BONY. (2017); SEASONAL VARIATIONS IN CONDITION FACTOR OF TWO FRESHWATER FISH SPECIES BELONGING TO THE GENUS SCHILBE OKEN, 1817 (SCHILBE MANDIBULARIS AND S. INTERMEDIUS) IN AN ESTUARINE ECOSYSTEM, AGHIEN LAGOON (C?TE D?IVOIRE, WEST AFRICA). Int. J. of Adv. Res. 5 (Sep). 1333-1339] (ISSN 2320-5407). www.journalijar.com

Gustave Nguessan ALIKO
Department of Environment, Jean Lorougnon Guédé University, Daloa City (Côte d’Ivoire)

DOI:

Article DOI: 10.21474/IJAR01/5449      
DOI URL: https://dx.doi.org/10.21474/IJAR01/5449

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