25, April 2026

Aquatic Entomofauna Diversity in Raiwada Reservoir, Anakapalli District, Andhra Pradesh, India

VOLUME-12; ISSUE-4; APR-2026

Author(s): K. Rama Rao, Purra Anuradha, P. John Kiran

Authors Affiliations:

1Department of Zoology, Dr. V. S. Krishna Govt. Degree College (A), Visakhapatnam, A.P. India

2 Department of Zoology, Govt. Degree College (A), Khairatabad, Hyderabad, Telangana State, India

3Department of Zoology, Govt. Degree College, Nakkapalli, Anakapalli Dt. A. P, India

DOIs:10.2015/IJIRMF/202604025     |     Paper ID: IJIRMF202604025


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The present investigation on aquatic entomofauna was undertaken to assess the diversity and distribution patterns in Raiwada Reservoir over a two year period from February 2022 to January 2024. A total of 2,986 individuals were recorded, encompassing 32 taxa distributed across seven orders and 22 families, reflecting considerable taxonomic diversity within the reservoir ecosystem. The family level composition revealed distinct proportional representation among insect orders, with Hemiptera contributing the highest share (36.36%), followed by Odonata (18.18%). The orders Coleoptera and Ephemeroptera each accounted for 13.64%, while Diptera contributed 9.09% of the total families. At the taxonomic level, Hemiptera again dominated the assemblage, comprising 37.50% of the total taxa, followed by Odonata (28.12%). Coleoptera and Ephemeroptera contributed 12.50% and 9.37%, respectively, whereas Diptera represented 6.25% of the total taxa. Seasonal and monthly variations in entomofaunal density were analyzed using the Shannon Wiener diversity index (Hʹ), with values consistently exceeding 0.69 across all seasons. These results indicate a stable, moderately diverse community structure and suggest favorable ecological conditions prevailing within the reservoir.

Entomofauna, Aquatic insects, Habitat, Shannon -Wiener diversity, Seasonal diversity, Evenness

K. Rama Rao, Purra Anuradha, P. John Kiran (2026); Aquatic Entomofauna Diversity in Raiwada Reservoir, Anakapalli District, Andhra Pradesh, India, International Journal for Innovative Research in Multidisciplinary Field, ISSN(O): 2455-0620, Vol-12, Issue-4, Available on –   https://www.ijirmf.com/

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