PHYSICO-CHEMICAL CHARACTERISTICS AND DIVERSITY OF AQUATIC INSECTS IN KALYAN SAGAR, DURG (CHHATTISGARH), INDIA

Abstract: The study investigates the physico-chemical characteristics and diversity of aquatic insects in Kalyan Sagar, located in the Durg City area of Chhattisgarh, India. This freshwater body plays a vital role in maintaining ecological balance and supporting diverse aquatic life. Water samples were analyzed for various physicochemical parameters, including temperature, pH , dissolved oxygen, total dissolved solids, and hardness. The results showed that the water quality was generally suitable for aquatic life, with variations in physicochemical parameters throughout the year. A comprehensive survey of aquatic insect populations was conducted, with samples collected from different habitats within the lake. A total of 12 species of aquatic insects were identified, including species from the 06 orders Hymenoptera, Dermaptera, Coleoptera, Hemiptera, Odonata, Orthoptera and 09 Families Dytiscidae, Elmidae, Nepidae, Formicidae, Anisolabididae, Gerridae, Ashnidae, Gryllotalpidae, Notonectidae. The diversity of aquatic insects was found to be influenced by water quality parameters, such as oxygen levels and nutrient concentrations. Higher insect diversity was observed in regions with stable oxygen levels and moderate turbidity. The findings suggest that Kalyan Sagar sustains a rich aquatic insect community, which can serve as an important indicator of water quality and ecological health. The study highlights the need for continuous monitoring of water bodies to ensure the preservation of aquatic biodiversity and ecosystem services in the region.