Abundance and diversity of Niger river rotifers in relation to environmental factors
International Journal of Development Research
Abundance and diversity of Niger river rotifers in relation to environmental factors
Received 27th March, 2019; Received in revised form 05th April, 2019; Accepted 17th May, 2019; Published online 30th June, 2019
Copyright © 2019, Sékou Sako et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
During two periods 8 months of sampling the community of rotifers was inventoried in relationship with 9 Physico-chemical parameters. The objective of this study was to inventory the specific richness of rotifers of the Niger River in Sotuba and to determine the impact of environmental factors on the composition of Rotiferian fauna. A plankton net Nitex 80 μm mesh and 20 cm of openness has been used, practicing the technique of the horizontal line. It was able to identify 35 species of rotifers grouped in 18 families dominated by the family of Brachionidae with 28.57% of genrus. The genus Brachionus dominates this family with 20% of the species. The turbidity, temperature, dissolved oxygen, pH, have been determined in situ. The nitrite, nitrate, ammonium, and ortho-phosphate have been quantified in the laboratory. The results have shown us the seasonality of the stand of rotifers linked to the evolution of the environmental factors which themselves depend on the seasons.
