Encyclopedia of Parasitology

2016 Edition
| Editors: Heinz Mehlhorn

Sarcosporidiosis, Animals

Reference work entry
DOI: https://doi.org/10.1007/978-3-662-43978-4_2807
Animals are hosts of  Sarcocystis spp. in different ways.
  1. 1.

    Predator animals (= carnivorous species) like dogs, cats, reptiles, predator birds, etc. develop the sexual and sporogonic stages in their intestinal cells (lamina propria) and excrete the fully sporulated oocysts (Sarcosporidiasis, Man, Fig. 1) containing 2 sporocysts (each with 4 sporozoites). In general the predator animals do not show symptoms of disease. Sometimes diarrhoea occurs for one day with abdominal pain.

  2. 2.

    Prey animals (= plant eater of omnivorous species) are the hosts for the schizogonic phase of the life cycle with schizonts in the endothelial cells of inner organs and later with  tissue-cysts in muscle fibres (Figs. 1, 2, 3, 4, 5, and 6, pages 1269–1272) and (in some species) in brain cells (e.g., in S. suicanis and S. suihominisin the case of pigs). The symptoms and their intensity is species-specific. Acute symptoms may occur during schizogony in the blood vessels of the omentum (with 2 penetrations...

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© Springer-Verlag Berlin Heidelberg 2016