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Diversity, Distribution and Abundance of Damselfly (Zygoptera) of Kapla Beel, Wetland of Barpeta District; Assam, India

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Author Affiliations

  • 1P.G. Deptt. of Zoology, Bajali College , Pathsala, 781325, Assam, INDIA
  • 2Deptt. of Zoology,C.N.B. College, Bokakhat,785612, Assam, INDIA

Int. Res. J. Biological Sci., Volume 4, Issue (4), Pages 69-76, April,10 (2015)

Abstract

The order Odonata is one of the ancient groups of the class insecta, consists of dragonflies and damselflies. The adults of both the groups are terrestrial while the larvae are aquatic. The Species of both the groups are highly specific to particular aquatic habitat. This habitat specificity makes them an ideal candidate for monitoring health of freshwater ecosystems.The studies on the Odonata of India is well documented since the time of Linnaeus but a very little or fragmentary work was completed to have information of the diversity and aboundance of these species from Northeast India. The present study was done with an objective to study the diversity and abundance of damselflies of the “KAPLA BEEL” near “Sarthebari” in the district of Barpeta, Assam. This study has been carried out for one year from June 2013 to May 2014. In this study total 26 species of damselflies belonging to 3 families and 11 genera were identified and recorded. It is observed that out of the total 26 species, 88.46% are of family Coenogrionidae followed by Platycnemididae while Calopterygidae showed very less species diversity. This is the primary record of damselflies diversity from the Kapla Beel, Barpeta, Assam, (India). Datas recorded from different months of the study period were compared and Shannon H’, Shannon Hmax, Shannon J’, Simpsons Diversity (D), Simpsons Diversity (1/D), Richness were calculated by using Biodiversity pro software 2.0. It was observed that in September there was highest value of Shannon H’ which is 1.398 and the least is seen in the April which is 1.302.

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