The influence of water temperature and pH on the survival of Fasciola hepatica miracidia

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Abstract

Experimental studies on the survival of Fasciola hepatica miracidia show no evidence that miracidial mortality varies with the pH of the medium, at least in the range 6. 0-8. 0. On the other hand, miracidial mortality is shown to vary with both the temperature of the medium and the age of the larvae. The mean expected life-span of the miracidium decreases from about 35 h at 6 °C to about 6 h at 25 °C. The Gompertz survival function provides a good description of the miracidial survivorship curves over the range of temperatures used, and we describe a maximum likelihood method of estimating the mean values of the parameters of this function, together with their approximate 95% confidence limits.

Original languageEnglish (US)
Pages (from-to)97-104
Number of pages8
JournalParasitology
Volume88
Issue number1
DOIs
StatePublished - Jan 1 1984
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Parasitology
  • Animal Science and Zoology
  • Infectious Diseases

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