First records of Collembola and their diversity measurement from B.A.U., Ranchi, Jharkhand
Ramesh Singh Yadav
Collembola are the highly diversified group of soil mesofauna. They are found in the almost all climatic conditions. The present survey was carried out in the campus of Birsa Agricultural University (BAU), Ranchi, Jharkhand during March, 2009. The aim of this research was to study the diversity of Collembola in the Ranchi, Jharkhand. About 288 individuals of Collembola belonging to the family Entomobryidae were collected by Aspirator and soil sample. The study revealed that 11 species belonging to 7 genera of 4 subfamilies of Entomobryidae were identified. Out of that 3 species namely, Entomobrya indica (Baijal, 1955) (16.67%), S. grieta (Tyagi & Baijal, 1979) (0.35%) and Cyphoderus javanus Borner, 1906 (3.13%) were first time recorded from Jharkhand and 8 species were firstly from Ranchi district. The study resulted that Lepidocyrtus Bourlet, 1839 was the dominating family having 3 species were reported. There was first time different ecological measurements like, Simpson index of diversity (D=0.91), Shannon’s diversity index (H́ = 1.77) and Pielou evenness index (J́ =0.74) were carried out from the Jharkhand for this fauna and it’s indicated that fair Collembola diversity is there. Margalef’s richness index (Dmg= 1.77) indicated species fair richnes of species in the present study.