The development of the free-living stages of Strongyloides papillosus: I. Effect of temperature on the development of the heterogonic and homogenic nematodes in faecal culture |
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Authors: | O.C. Nwaorgu |
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Affiliation: | Department of Clinical Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, Gt. Britain |
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Abstract: | Temperature had a significant effect on the proportion of free-living females and infective larvae of Strongyloides papillosus developing from faecal culture. The number of free-living males recovered from cultures incubated at 20°C was fairly constant. However, females were most numerous at 30°C and infective larvae at 20°C, with the sum of the two approximately the same at both temperatures. This indicates that infective larvae and females are developing from genetically identical eggs. The critical period by which the course of development has been fixed occurs between 4 and 5 h at 30°C, but between 4 and 24 h at 20°C. |
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