Rotifera IX pp 305-313 | Cite as

Biodiversity of Rotifera in some tropical floodplain lakes of the Brahmaputra river basin, Assam (N.E. India)

  • B. K. Sharma
  • Sumita Sharma
Conference paper
Part of the Developments in Hydrobiology book series (DIHY, volume 153)

Abstract

One hundred and sixteen species of Rotifera are recorded from seven floodplain lakes of the Brahmaputra basin (northeastern India), the highest rotifer biodiversity recorded from these biotopes in the Indian subcontinent to date. The Australasian Brachionus dichotomus reductus and Lecane batillifer; the Oriental Keratella edmondsoni, Lecane blachei and L. acanthinula; the Palaeotropical Lecane braumi, L. lateralis, L. unguitata, Trichocerca tropis, Testudinella greeni and T. brevicaudata; the Pantropical Brachionus donneri and a rather widely distributed Horaella brehmi represent taxa of biogeographical interest. Three species are new additions to the Indian rotifer fauna and eight are new to the N.E. region. Lecanidae > Brachionidae = Colurellidae > Trichocercidae > Testudinellidae comprise the largest fraction (68.0%) of the examined fauna. Comments are made on the general nature and composition of the rotifer taxocoenosis as well as on acidophilic elements, ecology of various taxa and on the species richness of different lakes.

Key words

Rotifera floodplain lakes Brahmaputra basin N.E. India biodiversity ecology 

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Copyright information

© Springer Science+Business Media Dordrecht 2001

Authors and Affiliations

  • B. K. Sharma
    • 1
  • Sumita Sharma
    • 2
  1. 1.Department of ZoologyNorth-Eastern Hill UniversityUmshing, ShillongIndia
  2. 2.Zoological Survey of IndiaShillongIndia

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