DEMONSTRATION OF SEVERAL SPOROCYSTS GENERATIONS AS A NORMAL PATTERN OF REPRODUCTION OF SCHISTOSOMA-MANSONI

  • 1 January 1980
    • journal article
    • research article
    • Vol. 37  (2) , 177-182
Abstract
The development of S. mansoni demonstrates that asexual reproduction within the vector-mollusk [Biomphalaria glabrata] does not proceed according to the usually accepted process. Under natural conditions, daughter sporocysts are capable of stopping production of cercariae and orienting production towards an additional generation of sporocysts, which themselves will be able to develop in the same manner. This process intervenes without exception provided that the duration of parasitosis exceeds 40 days (at 26.degree. C). It is observed in 3 different American strains of S. mansoni. This is believed to be the 1st demonstration of the existence of several sporocysts generations as an habitual mode of reproduction in the life cycle of Digenea.

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