oa African Zoology - The effect of temperature on the rate of development and emergence of schistosome cercariae

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



It has long been known (Porter 1938) that the distribution of the intermediate hosts of Bilharzia in South Africa is more extensive than is that of the disease, especially in the higher, colder parts of the country. Stirewalt (1954) showed that after several sub-passages in Australorbis kept at low temperatures, porocysts began to produce cercariae which had poor penetrative ability and often failed to mature.

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