부산대학교 도서관

Gandhi Sagar Lake is one of the most polluted water body of Nagpur city and is located in the centre of thickly populated residential area. Odonates are directly affected by water pollution since the major period of their life cycle as nymphs is spent in water. Although odonates are categorized as "moderately intolerant organisms" in a water body, no attempts have been undertaken to study the species specific intolerance level in Odonata. The following presentation describes the observation of the seasonal variation of odonates breeding in the polluted water of Gandhi sagar lake. The following eleven odonates were observed breeding in the Gandhi sagar lake- Suborder- ANISOPTERA: Family Aeshnidae- Anax guttatus (Burmeister); Family Gomphidae- Ictinogomphus rapax (Rambur); Family Libellulidae- Brachythemis contaminata (Fabricius), Bradinopyga geminata (Rambur), Crocothemis servilia servilia (Drury), Diplacodes trivialis (Rambur), Orthetrurn s. sabina (Drury), Pantala flavescens (Fabricius): Suborder- ZYGOPTERA: Family Coenagrionidae- Ceriagrion coromandelianum (Fabricius). Ischnura aurora (Brauer) and Ischnura senegalensis (Rambur). These odonates species appear to be robust and opportunistic species and can be catagorised as "fairly tolerant organisms". [ABSTRACT FROM AUTHOR]