Temporal variations in abundance and biomass of fish species inhabiting the K’sob reservoir (Eastern of Algeria)
DOI:
https://doi.org/10.24193/subbbiol.2018.2.10Keywords:
abundance, Algeria, biomass, fish assemblage, reservoir.Abstract
This study presents data on fish community structure in the K’sob reservoirs (semi arid area) in the East of Algeria. The artisanal fishery was conducted from September 2010 to August 2011. The monthly variations in species composition were analyzed by effort and catch per unit of effort (CPUE) and biomass per unit of effort (BPUE). A total of seven species representing three families was recorded in the investigated reservoir. Cyprinids dominated in this reservoir. Luciobarbus callensis is the native species captured in this area, the rest of the fish were introduced. The other Cyprinids are: Cyprinus carpio carpio, Hypophthalmichthys molitrix, Hypophthalmichthys nobilis, Squalius cephalus. The Poecilidae were represented by Gambusia holbrooki. The third family, Cichlidae, was represeted by Oreochromis niloticus. The dominant species in terms of abundance was L. callensis, however, C. carpio carpio and H. nobilis showed higher values in biomass. Several species showed significant temporal variation in monthly samples. The fish assemblage is dominated by invasive species, while predatory species were not detected in the study.
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