These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: The influence of physical factors on the behaviour and infectivity of miracidia of Schistosoma mansoni and S. haematobium. II. Effect of light and depth.
    Author: Prah SK, James C.
    Journal: J Helminthol; 1978 Jun; 52(2):115-20. PubMed ID: 670668.
    Abstract:
    A striking difference was found in the responses of Schistosoma mansoni and S. haematobium miracidia to the intensity and direction of light and to gravity. S. mansoni miracidia were found to be positively phototactic and sensitive to small changes in light intensities. They were indifferent to gravity. S. haematobium miracidia however were negatively phototactic and unable to distinguish low light intensities from darkness. They showed a strong positive geotaxis. Both S. mansoni and S. haematobium miracidia could successfully find and infect snails to a depth of 2 metres of water: the significance of these findings in relation to transmission of schistosomiasis in the field is discussed.
    [Abstract] [Full Text] [Related] [New Search]