Portland State University. Department of Biology
David T. Clark
Date of Publication
Master of Science (M.S.) in Biology
Ancylostoma caninum, Oesophagostomum radiatum, Intestines
1 online resource (59 p.)
The parasitic nematodes Ancylostoma caninum and Oesophagostomum radiatum were collected and analyzed for intestinal inorganic granules. Three means of identification were utilized to determine the composition granules, including birefringence, x-ray diffraction and energy dispersive spectrometric (EDS) analysis. Initial x-ray diffraction results of the two worms showed a calcium sulfide presence within the worms. Closer examination of the granules within Ancylostoma caninum however, utilizing EDS analysis revealed their composition to be zinc sulfide. These results concur with those of Rogers (1940) and Clark (1956) who found zinc sulfide granules in several species of Strongylus. The ZnS granules seem to be a result of a detoxification function that binds excess zinc and sulfhydryl groups present from the ingestion and breakdown of dietary blood meals.
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Gianotti, Alan Joseph, "Intestinal granules found in the parasitic nematodes Ancylostoma caninum, and Oesophagostomum radiatum" (1988). Dissertations and Theses. Paper 3862.