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Shannon-Weiner species diversity index of sunflower insect pest, B.tabaci (Hemiptera: Aleyrodidae) & allied species

Mausam Kumari*
University Department of Zoology, B.N.Mandal University, Madhepura, Bihar, India
Received : 11th May, 2020 ; Revised : 15th June, 2020

Abstract : This communication is furtherance of my previous work on the quantification of relative abundance of various insect pest species including B. tabaci on sunflower plant. The article deals with advanced statistical application to the prevailing population data of five different species of insect pests like- whitefly: Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) leafhopper:Empoasca spp. (Lepidoptera:Noctuidae), flower moth: Thysanoplusia orichalce (Lepidoptera:Noctuidae),bollworm: Helicoverpa armigera (Lepidoptera:Noctuidae) and stink bug:Nezara viridula (Heteroptera:Pentatomidae) reflecting composite pest infestation. These insects are taxonomically represented by the Hemipterans, Lapidopteran and Heteropterans. Advanced statistical tools like Shannon Weiner (S-W) species diversity index (Ħ ), relative abundance (RA%) and Jaccard’s evenness(E) have been applied to the raw population data of pest species procured during the sampling in 2018. The results are very significant in the terms of pest species secured and protected survival on the host plant- sunflower at the latter’s cost that blows serious alarm to urgently envisage the conservative strategies for the host plant being the revenue generating crop in Kosi basin agricultural land covering Saharsa Madhepura, Purnea etc of North Bihar.

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