i-manager Publications

Diversity Assessment of Insect Species in the Kariavattom Campus, University of Kerala

Hussein Hassan*, Suhara Beevy S.**

*-** University of Kerala, Thiruvananthapuram, Kerala, India.

Periodicity:September - December'2023
DOI : https://doi.org/10.26634/jls.2.3.20768

Abstract

Insects play crucial roles in their specific niches and are vital contributors to various ecosystem processes. They dominate the food webs of both terrestrial and aquatic ecosystems. A study was conducted at Kerala University to evaluate the diversity and abundance of insect species in selected habitats (North and South campus). Sampling was conducted using pitfall traps, sweep nets, beating sheets, Berlese funnels, and hand collection. The collected insects were brought back to the laboratory for identification and counting. A total of 965 insects from 9 Orders and 35 Families were recorded. Indices such as the Shannon index, Simpson index, Margalef index, Evenness index, and Sorenson similarity index were utilized to analyze the diversity of insects. The results indicated that Hymenoptera (30.155%), Orthoptera (25.596%), Lepidoptera (11.192%), and Coleoptera (8.290%) were the most dominant Orders on the campus, comprising 75.233% of the total, whereas the least abundant was Mantodea (0.622%). The South Campus exhibited high species diversity (Margalef index = 8.422), abundance (n = 686), Evenness (E = 0.776), and Shannon diversity (H = 3.124) of insects. It also showed a higher Simpson index (λ = 0.109) compared to the North Campus, which indicated (λ = 0.0610). Moreover, the South Campus recorded a very high number of species, with 56 species (Margalef index = 8.422) compared to 45 species (Margalef index = 7.813) recorded from the North Campus. The higher the index value, the greater the species richness. The high diversity and richness of insects in the southern habitat may be attributed to the large and less disturbed area, the presence of well-distributed ecological niches, more microhabitats, and an abundance of food. Therefore, understanding the factors that influence insect species diversity and abundance at the University of Kerala is important for conservation. This study, thus, highlights the diversity and abundance of insects and the need for sustainable measures to be implemented to conserve these significant species.

Keywords

Abundance, Insects, Diversity, Evenness, Assessment.

How to Cite this Article?

Hassan, H., and Beevy, S. S. (2023). Diversity Assessment of Insect Species in the Kariavattom Campus, University of Kerala. i-manager’s Journal on Life Sciences, 2(3), 1-16. https://doi.org/10.26634/jls.2.3.20768

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