HM Manjunatha Swamy1 and BR Kiran2

1Assistant Professor, Department of Chemistry, SJM Science, Commerce and Arts College, Chandravalli, Chitradurga-577501 (India) 2Research and Teaching Assistant in Environmental Science, DDE, Kuvempu University, Shankaraghatta-577451 (India)


Fish ponds at Bhadra fish seed farm in Shivamogga district was studied for insect composition and Physico-chemical parameters in two fish ponds, for a period from April to September 2018. A total of 19 species of aquatic insects belonging to 04 orders were recorded. Among orders, Hemiptera consists of 11 species followed by Coleoptera with 04 species and Odonata and Diptera each with 02 species respectively. Human fishing activities and dumping of cowdung/poultry manure to the fish ponds water creates threat to the biota by altering the water quality. Different parameters studied were Water temperature, pH, al;kalinity, hardness, DO, Free CO2 and BOD. The results obtained from the current study indicated that the water pH of fish ponds were alkaline in nature and remaining contents were in moderate concentrations. Oneway ANOVA and Tukey HSD test were calculated to know the significant difference between the water quality parameters.

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