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Infectivity of Hymenolepis nana eggs from faecal pellets in the rectum of mice

Published online by Cambridge University Press:  05 June 2009

Jun Maki  and
Toshio Yanagisawa
Jun Maki
Affiliation:
Department of Parasitology, Kitasato University School of Medicine, Sagamihara, 228 Japan
Toshio Yanagisawa
Affiliation:
Department of Parasitology, Kitasato University School of Medicine, Sagamihara, 228 Japan
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Abstract

The infectivity of Hymenolepis nana eggs from faecal pellets in the rectum of mice was compared with that of the eggs in gravid proglottids of adult H. nana and with that of the eggs in excreted faecal pellets to find out a simple method for collecting H. nana eggs of high infectivity to mice. Eggs from faecal pellets in the rectum showed higher infectivity than those from gravid proglottids and as high infectivity as those from gravid proglottids selected by a watch-glass rotation technique. Eggs in faecal pellets in the rectum did not lose infectivity until 4 h after they were excreted and exposed to the air at room temperature (27–28°C) with relative humidity of 35–40%. However, the eggs lost infectivity significantly 17 h after excretion onwards.

Keywords

Hymenolepis nanamouseinfectivityova
Type
Research Papers
Information
Journal of Helminthology , Volume 61 , Issue 4 , December 1987 , pp. 341 - 345
Copyright
Copyright © Cambridge University Press 1987

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References

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