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The developmental cycle of a species of Sarcocystis occurring in dogs and sheep, with observations on pathogenicity in the intermediate host by B. L. Munday; I. K. Barker; M. D. Rickard is a Immunology and Microbiology article available to read on EtoBox.

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Twelve dogs were fed mutton containing small sarcocysts, and killed 1, 3, 4, 6, 7, 10, 15, 16, 17 days after infection (DAI). Beginning 13-15 DAI sporocysts 14.7 times 9.0 mum were passed in the faeces of the dogs killed 15-17 DAI. Histological examination showed that developing stages were most numerous in the subepithelial tissue at the tips of villi in the proximal third of the small intestine. Macrogametes containing tiny PAS + granules, and microgametocytes with peripheral developing microgametes were present 1 DAI. By 4 DAI oocysts, with a small nucleus and vacuolate cytoplasm were seen. Sporulation was observed 7-10 DAI. The first nuclear division resulted in 2 polar nuclei which divided laterally, resulting in 2 sporocysts each with 2 polar nuclei. This process was repeated once more to produce 4 nucleated sporozoites in each of 2 sporocysts. PAS + granules were seen at the periphery of sporulating oocysts and sporocysts. There was a large PAS + granule in the mid zone of sporozoites, with a smaller granule at one tip. Numerous sporulated sporocyst pairs were present beneath the epithelium at the tips of villi in dogs killed during patency. Four lambs were inoculated orally

Who reads The developmental cycle of a species of Sarcocystis occurring in dogs and sheep, with observations on pathogenicity in the intermediate host?

Author

B. L. Munday; I. K. Barker; M. D. Rickard

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 1432-1955)

Published

1975

Language

EN

Field

Immunology and Microbiology (Life Sciences)