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Chabet dis Chalabia

  • Biodiversity Journal, 14 (3): 0421-0429

    Chabet dis Chalabia, Ferhani Khadra, Laababsa Leila, El Houatti Habiba, Zouaoui Karima, Boucena Mohamed Amine, Itchir Rachida, Chelif Halim, Belhouchet Ismail, Redjemi Momahed Aimen & Didani Amira
    Eco-biological study of the Largemouth bass, Micropterus salmoides Lacépède, 1802 (Perciformes Centrarchidae), from Keddara Dam (Boumerdes, Algeria)
    https://doi.org/10.31396/Biodiv.Jour.2023.14.3.421.429

    ABSTRACT
    The aim of this work is to provide necessary information on the eco-biology of Largemouth bass Micropterus salmoides Lacépède, 1802 (Perciformes Centrarchidae) in Keddara Dam Lake, located in northern part of Algeria. A total of 67 specimens (22 females and 45 males) were collected during December 2019 and September 2020. The sex ratio was M:F = 2.33:1 and M:F = 2:1 for December 2019 and September 2020, respectively. The length-weight relationship was estimated for each period, with W = 0.1672xL2.291 for December 2019 and W = 0.0039xL3.405 for September 2020. The condition factor K estimated for December 2019 was K = 15.51±0.49, for September 2020 was K = 13.92±2.22. Macroscopic observation of the gonads showed that the spawning period begins in December. Micropterus salmoides feeding activity was high in December 2019, mostly eating fish (60% and 24.56% for fish part for December 2019 and September 2020, respectively, and 10% and 26.31% for full fish for December 2019 and September 2020, respectively). Largemouth bass display biological adaptation and trophic plasticity possibly facilitating its success in Keddara Dam as invasive species.