Vol. 7, Issue 5 (2019)
Coleopteran diversity in bhendi ecosystem, Abelmoschus esculentus L. (Moench)
Author(s): Kavinilavu M, Vishnupriya R and Chitra N
Abstract: An extensive survey was conducted to understand the species diversity of coleopterans in bhendi (Abelmoschus esculentus) ecosystem. The present study was carried out at four locations like Perur, Thondamuthur, Narasipuram and TNAU, Coimbatore during August 2107 to April 2018. Coleopteran insects were collected using seven different methods viz., insitu count, sweep net, yellow pan trap, pheromone trap, yellow sticky trap, light trap and pitfall trap. In total 12,653 individuals of coleopterans were collected in which 13 different families and 51 species were identified. Among the 51 species, 29 species were herbivores, 16 species were predators, five species were visitors, and one scavenger species was recorded. From that, it has concluded that predator and herbivore ratio was 1:1. Insect collection was made at different crop stages from sowing to harvest of bhendi. Among these, vegetative stage mostly preferred by coccinellids (0.48%) followed by Myllocerus spp. (0.38%) and flowering stage was most affected by the coleopterans including the three major families viz., Cetonidae (0.007%), Anthicidae (0.226%) and Meloidae (0.047%). The relative abundance of coleopteran species in bhendi ecosystem were Myllocerus spp. (Curculionidae) (1.10%) followed by Mylabris pustulata Thunberg (0.91%), Aulacophora foveicollis Lucas (0.42%), and Oxycetonia versicolor Fabricius (0.22%). The Simpson’s diversity Index (SDI), Shannon-Wiener index (H’), species richness (D), and evenness index (E1) were computed for all four locations. The coleopteran diversity was high in Perur region (0.08036, 3.283, 5.173 and 0.889, respectively) followed by TNAU, Coimbatore region (0.07656, 3.236, 4.624 and 0.8633, respectively). The present study will provide information on grading the insects while carrying management practices and decrease the cost of crop protection practices.
Pages: 943-947 | 290 Views 76 Downloads
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How to cite this article:
Kavinilavu M, Vishnupriya R, Chitra N. Coleopteran diversity in bhendi ecosystem, Abelmoschus esculentus L. (Moench). Int J Chem Stud 2019;7(5):943-947.
