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Farid Bounaceur

  • Biodiversity Journal, 11 (4): 0951-0959

    Naima Sellaoui & Farid Bounaceur
    Growth and length-weight relationships of Gambusia affinis (Baird et Girard, 1853) population in Algeria (Cyprinodontiformes Poeciliidae)
    https://doi.org/10.31396/Biodiv.Jour.2020.11.4.951.959

    ABSTRACT
    The aim of this study is to provide necessary information on the growth, length-weight relationships of Gambusia affinis (Baird et Girard, 1853) (Cyprinodontiformes Poeciliidae) in four different areas: Timimoune's foggara, southwestern Algerian Sahara, with a total of 402 specimens; 182 fishes in Bechar; Biskra, northeastern Sahara, with 282 specimens; and Oued Sebaine, in western Algeria, with 638 fishes. The female to male sex ratio was 2.14:1 (Timimoune), 2.19:1 (Bechar), 2.61:1 (Biskra) and 2.35:1 (Tiaret). The length-weight relationship of G. affinis population shows a difference in growth between the sexes (isometric, positive and negative allometric). The parameter of Von Bertalanffy, L∞, was obtained for the females of each region: in Timimoune, 62.14 mm; in Bechar, 51.72 mm; in Biskra, 67.25 mm; and in Tiaret, 63.62 mm. The L∞ of males for each region is instead: in Timimoune, 45.48 mm; in Bechar, 41.75 mm; in Biskra, 47.89 mm; and in Tiaret, 45.49 mm.