Insects diversity in an agroecosystem of Bhabar region of Uttrakhand

Abstract

Species diversity and abundance of insects associated in an agricultural ecosystem was studied in Bhabar region of district Nainital in Uttarakhand from March 2018 to February 2020. Data revealed a total of 148 insect species belonging to 47 families and nine orders (Lepidoptera, Coleoptera, Hemiptera, Orthoptera, Hymenoptera, Odonata, Diptera, Dictyoptera, and Phasmida), identified from 2007 specimens. These were classified into five functional trophic groups: phytophagous, predators, omnivores, saprophages and decomposers. The diversity indexes showed significance- Diversity (Hʹ=1.778), Evenness (E=0.9689), and Margalef’s Index (d=1.924). Diversity indices of insect orders showed Lepidoptera to be the most diverse (Hʹ=1.994) with maximum species richness having high Margalef’s index (d=2.607), and dipterans with highest evenness (E=0.9572). A total of 1331 individuals of insect pollinators/ visitors were observed, belonging to 99 species of 5 orders (Lepidoptera, Hymenoptera, Coleoptera, Hemiptera, and Diptera).

Diversity of Coleoptera on Cucumber in the Tonkpi Region of Man, Côte d’Ivoire

“…1). Similar results were reported by Rekha et al (2023), who showed that, the relative abundance of Coleoptera was 12.35% in an agricultural ecosystem. The occurrence frequencies of Coleoptera species recorded on cucumber plants during the dry and rainy season were varied from 62 to 99% and were classified as constant species (50% ≤ Fo< 100%).…”

“…Some coleopteran species are beneficial insects for crops, while others are pests (Premalatha et al, 2011;Diabaté et al, 2020b). Leaf beetles are one of the largest families among beetles and are economically important insects (Jolivet, 2015;Rekha et al, 2023). These insects are phytophagous and are agricultural pests (Yoboué et al, 2022).…”

“…These insects are phytophagous and are agricultural pests (Yoboué et al, 2022). Adult damage affects cucurbits by damaging cucumber leaves (Khan, 2012;Rekha et al, 2023). These insect pests are real problems for farmers because of the damage they cause and pesticides are most often used to their control.…”

Seasonal Incidence and Effect of Abiotic Factors on Mango Leaf Hopper (Amritodus atkinsoni L.) Population on Different Cultivars of Mango in Eastern Uttar Pradesh, India

“…between April and May, concurred with the findings of our study. The observation made by [17] and [18] indicates that adult A. atkinsoni began appearing in February and March. Furthermore, the analysis revealed that there was no significant link between abiotic conditions and the presence of mango hopper.…”

“…Patel [26] examined the levels of insect population in agroforestry systems in Mizoram, India, between 2000 and 2002 [18]. The study revealed that the quantity of insects was much higher during the summer season and reduced during the winter season [4].…”