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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2018, Vol. 6, Issue 4, Part B

Seasonal distribution patterns of fish assemblage in the lagoon of Somone natural reserve of communal interest in Senegal: influence of abiotic factors


Author(s): Ousmane Diankha

Abstract: Fish assemblage was investigated for patterns in seasonal structure in Somone lagoon, Senegal. Seasonal sampling from three stations with beach seine was performed in 2017. Abiotic factors such as temperature and salinity were measured during each season at all stations. Ecological and trophic classification was carried out in order to determine the fish fauna nature of this lagoon. Multivariate analysis like factorial correspondence analysis (FCA) and hierarchical classification analysis (HCA) were carried out to study temporal organization of fish assemblage. Canonical correspondence analysis (CCA) was performed to assess the influence of abiotic factors on temporal fish assemblage distribution. The fish assemblage of Somone lagoon consisted of 29 species from 19 families. The most abundant species were Mugilidae and Cichlidae species, accounting for 82.87% of total abundance and 87.53% of the total biomass. In terms of ecological and trophic guilds, the fish assemblage was dominated by species with estuarine affinity (19 species representing 94.75% of total individuals and 94.69% of total biomass) and herbivorous species (8 species accounting for 82.80% of total individuals and 87.17% of total biomass). The multivariate analysis indicated that temperature and salinity played an important role on the temporal distribution of fish assemblage in Somone lagoon.

Pages: 115-123  |  367 Views  17 Downloads

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How to cite this article:
Ousmane Diankha. Seasonal distribution patterns of fish assemblage in the lagoon of Somone natural reserve of communal interest in Senegal: influence of abiotic factors. Int J Fish Aquat Stud 2018;6(4):115-123.
International Journal of Fisheries and Aquatic Studies