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VOL. 11, ISSUE 1 (2026)
Species composition and diversity of insect pollinators visiting Radish (Raphanus Sativus L.) in semi-arid climate of Gangapur City, Rajasthan, India
Authors
Paras Meena, Monika Jagarwal, Ghanshyam Kachhawa
Abstract
Insect pollinator’s variety and quantity are essential for both
environmental stability and agricultural output. The variety, species
composition, and relative abundance of insect pollinators in Gangapur,
Rajasthan, were investigated in the present study on radish (Raphanus
sativus L.). A total of fifteen species of insect pollinators from seven
families and three orders, Hymenoptera, Lepidoptera, and Diptera, were
identified. The total relative abundance of pollinators was 66.1 insects/m²,
dominated by Hymenoptera, particularly the Apidae family. Apis dorsata
(9.0 insects/m²) was the most abundant species, followed by Apis mellifera
(8.2) and Apis florea (7.0). Among lepidopterans, Danaus chrysippus
(4.8) was the most prevalent. Syrphid flies, including Sphaerophoria
macrogaster (3.1) and Episyrphus balteatus (2.0), were the main
dipteran pollinators. According to the Shannon–Wiener diversity index (H′ =
2.5920), diversity analysis showed a significant degree of species diversity. A
well-distributed pollinator population with little dominance is suggested by
the low Simpson's dominance index (D = 0.08215) and high Simpson's index of
diversity (1 − D = 0.91749). A high level of evenness in the distribution of
individuals among species was further demonstrated by Pielou's evenness index
(E = 0.9571). The presence of lepidopteran and dipteran pollinators highlights
the need for functional diversity, while Apis species play a crucial role in
pollination. Conservation and habitat management are very important to sustain
pollination services in our ecosystem and to support diverse insect pollinator
communities.
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Pages:11-15
How to cite this article:
Paras Meena, Monika Jagarwal, Ghanshyam Kachhawa "Species composition and diversity of insect pollinators visiting Radish (<i>Raphanus Sativus</i> L.) in semi-arid climate of Gangapur City, Rajasthan, India". International Journal of Zoology Studies, Vol 11, Issue 1, 2026, Pages 11-15
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