Study on the abundance and diversity of ground dwelling insects using Pitfall trap in two different ecosystems of Kendujhar District, Odisha, India
1*Sagata Mondal, 1Arijit Kumar Dutta, 1Payel Manna, 1Airin Sultana and 1Md. Rawannaque Reza
1Post Graduate Department of Zoology, Vidyasagar College, Salt Lake campus, C L Block, Kolkata-700091 (India) E-mails: sagata.mondal@rediffmail.com *Corresponding author: Dr. Sagata Mondal, Ph.D. Address of Corresponding Author : Post Graduate Department of Zoology, Vidyasagar College, Salt Lake campus, C L Block, Kolkata-700091 (India) Mail id of Corresponding Author : sagata.mondal@rediffmail.com
ABSTRACT
The present study was undertaken to explore the diversity of ground dwelling insects from 2 different ecosystems of Kendujhar district, Odisha. A total of 25 different families belonging to 8 different orders were reported from these 2 ecosystems. Of them, family Formicidae belongs to the order Hymenoptera shares maximum number of species (142 from study site 1 and 88from study site 2) followed by Entomobryidae (131 and 72), Isotomidae (47 and 04) belongs to the order Collembola, Thripidae belongs to the order Thysanoptera (18 and 06) and so on. High percentage of ground dwelling insect diversity was observed in Formicidae family with 43% observed in woodland ecosystem followed by mixed vegetation ecosystem (34%). The present study was also conducted to determine the species richness, Simpson’s Reciprocal Index and Shannon-Wiener index of insect fauna from different ecosystems. The Simpson’s Reciprocal Index and Shannon-Wiener index are highest in mixed vegetation ecosystem (4.237 and 1.879) and lowest in woodland ecosystem (3.175 and 1.599). Graphical representation of the number of insects according to family by the heat map analysis using a warm to cool colour scheme in the form of hot and cold spots.