oa African Zoology - Distributional trends of four species of freshwater snails in South Africa with special reference to the intermediate hosts of bilharzia

Volume 2, Issue 1
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



Urinary bilharziasis has been known to occur in South Africa since 1864 when it was first discovered by Harley in the vicinity of Humansdorp. Its first local snail intermediate host, now known as Bulinus (Physopsis) africanus (Krauss) was only discovered in 1916 by Becker. In 1957 Mandahl-Barth also recorded Bulinus (Physopsis) globosus (Morelet) from this country whereas Krauss had already descriptionbed what is now called Biomphalaria pfeifferi from Natal in 1848. Up till now these three species are the only established intermediate hosts of Bilharziaknown to be endemic in the Republic of South Africa.

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