International Journal of Fisheries and Aquatic Studies
2016, Vol. 4, Issue 1, Part A
The evaluation of cage fish farming effects on water quality using selected benthic macro-invertebrate community parameters in the napoleon gulf, northern Lake Victoria
Author(s): Hope Nabirye, Lucas Mwebaza-Ndawula, FWB Bugenyi, Fredrick Jones Muyodi
Abstract: Since the proliferation of cage fish farming in Uganda has raised concern over water quality deterioration, a study of the effects of cage fish farming on water quality in the Napoleon Gulf, Northern Lake Victoria was conducted during October 2012 to February 2013. Selected water column physico-chemical parameters and benthic macro-invertebrates’ community parameters (i.e. numerical abundance, Shannon-Weaver diversity Index and modified Hilsenhoff Biotic Index) were analyzed monthly at both cage and non-cage sites. No significant differences were observed in physico-chemical parameter values, benthic macro-invertebrates’ numerical abundance and Hilsenhoff Biotic Index between cage and non-cage sites. On the other hand Benthic macro-invertebrate species diversity differed significantly between the reference site and cage site 2 (P<0.05). Pollution tolerant
Chironomus sp. and
Melanoides tuberculata Muller, 1774 were significantly higher at the cage sites than the non-cage sites (P<0.05). These results suggest that cage fish farming significantly changed water quality.
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How to cite this article:
Hope Nabirye, Lucas Mwebaza-Ndawula, FWB Bugenyi, Fredrick Jones Muyodi. The evaluation of cage fish farming effects on water quality using selected benthic macro-invertebrate community parameters in the napoleon gulf, northern Lake Victoria. Int J Fish Aquat Stud 2016;4(1):42-50.
