Hydrobiologia

, Volume 246, Issue 1, pp 9–40 | Cite as

Freshwater snails of East Caprivi and the lower Okavango River Basin in Namibia and Botswana

  • D. S. Brown
  • B. A. Curtis
  • S. Bethune
  • C. C. Appleton
Article

Abstract

A systematic account is given of the aquatic gastropod fauna of the lower Okavango River in Namibia and Botswana, and of the East Caprivi area in Namibia, based on collections made mostly in 1983–86 from about 100 different sites. A total of 20 living species are reported, 9 of them for the first time from this area: Bellamya monardi, Lobogenes michaelis, Cleopatra elata, Afrogyrus coretus, Segmentorbis angustus, S. kanisaensis, Bulinus scalaris, B. depressus and B. tropicus. All are found outside this area and most are widely distributed Afrotropical species. Some do not occur farther south than the Okavango Delta, while others reach a south-western limit here but occur at greater latitude in the eastern tropical corridor on the coast of Natal. Bulinus globosus and Biomphalaria pfeifferi occur throughout the study area and are intermediate hosts for schistosome parasites of man and livestock.

Key words

Mollusca Gastropoda freshwater snails taxonomy distribution Africa Namibia Botswana Okavango River 

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Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • D. S. Brown
    • 1
  • B. A. Curtis
    • 2
  • S. Bethune
    • 3
  • C. C. Appleton
    • 4
  1. 1.Science Departments: ZoologyBritish Museum (Natural History)LondonUK
  2. 2.The State Museum of NamibiaWindhoekNamibia
  3. 3.Department of Water Affairs, Research StationWindhoekNamibia
  4. 4. Department of Zoology & EntomologyUniversity of NatalPietemaritzburgRepublic of South Africa

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