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Relative abundance of Aeshna spp. : an Anisopteran Odonate genus in marshy land habitats of Ranchi, Jharkhand

Jaya Kumaria*, Seema Keshria & M.Prasadb
aDepartment of Zoology, RLSY College, R.U., Ranchi, Jharkhand, India
bDepartment of Zoology, Ranchi University, Ranchi, Jharkhand, India

Received  5th January, 2012; Revised 27th February, 2012

Abstract : The odonate insects available in the marshy land habitat of Ranchi, Jharkhand have been sampled and incidentally all but one have been found to be the members of sub-order Anisoptera (dragonflies). The marshy land habitats of  Ranchi being a representative of tropical climate display a good amount of variation in these species composition in terms of  abundance and richness. In the present piece of research work, the relative abundance  of  a genus  of dragonflies,  Aeshna spp. (Odonate : Anisoptera) is being reported from eastern zone of Ranchi specially after rainy season. Thus, the genus and its species seems to be dominant over other members as per S-W diversity index also.

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