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VOL. 11, ISSUE 1 (2026)
A study on the diversity of aquatic insect and water quality assessment of Joysagar Tank, Sivasagar District, Assam, India
Authors
Mridupawan Gogoi, Dristima Chetia
Abstract
Aquatic insects play a vital role in
freshwater ecosystems and are widely recognized as reliable indicators of
ecological condition and water quality. The present study investigates species
diversity of aquatic insects in Joysagar tank, located in the Sivasagar
district of Assam, India, with an emphasis on understanding species–habitat
relationships in relation to water quality. Field sampling was carried out over
a six-month period from January to June 2024 to assess the structure and
diversity of the aquatic insect community. A total of 30 aquatic insect species
belonging to 6 orders and 17 families were recorded during the study period.
Among the recorded taxa, the order Hemiptera was found to be the most dominant,
comprising 7 families and 15 species, followed by Coleoptera with 8 families
and 4 species. The order Odonata and Diptera with 2 species belonging to 2
families from each order, while Ephemeroptera contributed two species from a
single family. The lowest diversity was observed in the order Hymenoptera,
which was represented by only one species belonging to one family. Aquatic
insect distribution was found to be closely associated with variations in
physicochemical characteristics of the water, as different taxa exhibited
varying levels of tolerance to water quality conditions. The analysis of
physicochemical parameters indicated that the water quality of Joysagar was
generally within favorable limits, providing suitable conditions for the growth
and survival of a wide range of aquatic organisms. This overall good water
quality is considered a major factor contributing to the high diversity and
abundance of aquatic insects observed.
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Pages:180-185
How to cite this article:
Mridupawan Gogoi, Dristima Chetia "A study on the diversity of aquatic insect and water quality assessment of Joysagar Tank, Sivasagar District, Assam, India". International Journal of Entomology Research, Vol 11, Issue 1, 2026, Pages 180-185
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