1. Government College, Department of Botany, Ajmer 305001 (Rajasthan), India
2. Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department of Limnology of Stratified Lakes, Alte Fischerhütte 2, 16775 Stechlin, Germany
3. Kenyatta University, Plant and Microbial Sciences Department, P.O. Box 43844, Nairobi, Kenya
4. National Autonomous University of México, Department of Comparative Biology, School of Sciences, A.P. 70 – 474, CU, Coyoacán, 04510, D.F. México
5. Addis Ababa University, College of Education, Department of Biology, PO Box 1913, 1110 Addis Ababa, Ethiopia
6. Culture Collection of Algae and Protozoa, Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Dunbeg by Oban, Argyll, PA37 1QA, United Kingdom