International Science Community Association International Research Journal of Biological Sciences 2278-3202 8 6 2019 06 10 Distribution and ecology of euglenoids in certain lakes of Tumakuru District, Karnataka, India 12 17 EN N. Prabhu 1 Department of Biotechnology, Vivekanandha College of Engineering for Women, Thiruchengode, Namakkal-637 205, Tamilnadu, India T. Gajendran 2 Department of Biotechnology, Bharathidasan Institute of Technology, Anna University, Tiruchirappalli-620 024, Tamilnadu, India B. Kartika 3 Department of Biotechnology, Vivekanandha College of Engineering for Women, Thiruchengode, Namakkal-637 205, Tamilnadu, India S. Monisha 4 Department of Biotechnology, Vivekanandha College of Engineering for Women, Thiruchengode, Namakkal-637 205, Tamilnadu, India S. Saarumathi 5 Department of Biotechnology, Vivekanandha College of Engineering for Women, Thiruchengode, Namakkal-637 205, Tamilnadu, India V.N. Murulidhara 1 Dept. of Botany, Government First Grade College of Arts, Science & Commerce, Sira, Karnataka, India V.N. Yogananda Murthy 2 Dept. of Biotechnology, Azyme Biosciences Pvt. Ltd. Bengaluru, Karnataka, India > 2018 12 23 2019 06 10 Distribution and ecology of euglenoids in relation to physico-chemical characteristics of water in four lakes of Tumakuru district was studied during 2015-17 and discussed. Euglenoids function as indicators of aquatic superiority. Composite samples were taken at two feats depth from surface level on monthly basis for the enumeration of euglenoids. A total of ten species under three genera were identified. Guluru lake harboured 46.66% followed by Colony and Teeta lakes 20% each and Bugudanahalli lake with 13.33%. Seasonally all the lakes recorded maximum density of euglenoids during summer except in Colony lake, where they reached their peak during rainy season. Euglenoids showed significant positive correlation with water temperature (r=0.664:P<0.05), Sulphate (r=0.757:P<0.05) and Silica (r=0.775:P<0.05) at 5% level. Euglenoids established negative correlation with dissolved oxygen and ammonical nitrogen. Copyright@ International Science Community Association