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Life cycle ofSarcocystis tenella in sheep and dog

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Abstract

ForSarcocystis tenella, the second microscopic sarcocyst in sheep, the dog was shown to act as final host shedding sporocysts measuring 13.75–15.8 (14.8±0.8)×9.7–10.8 (10.1±0.4) μm after a prepatent period of 8–13 days. The clinical signs and the course of experimental infections in sheep were most similar toS. ovicanis. After high doses of sporocysts sheep had temperatures up to 42° C, anaemia, and paresis; they finally died from haemorrhagic diathesis. The development ofS. tenella in sheep was studied and it resulted in microscopic cysts in the musculature that measured 300–650×20–50 μm. They showed hair-like delicate protrusions of the cyst wall measuring 6–8×<0.5 μm, by whichS. tenella could be clearly differentiated fromS. ovicanis from day 60 p.i. onwards. The decreasing number ofS. tenella through degeneration of cysts is suggested to be a self-cleaning process.

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References

  • Bergler KG, Erber M, Boch J (1980) Untersuchungen zur Überlebensfähigkeit von Sporozysten bzw. Oozysten vonSarcocystis, Toxoplasma, Hammondia undEimeria unter Labor- und Freilandbedingungen. Berl Münch Tierärztl Wochenschr 93:288–293

    Google Scholar 

  • Bergmann V, Kinder E (1975) Unterschiede in der Struktur der Zystenwand bei Sarkozysten des Schafes. Mh Vet Med 30:772–774

    Google Scholar 

  • Boch J, Bierschenck A, Erber M, Weiland G (1979)Sarcocystis- undToxoplasma-Infektionen bei Schlachtschafen in Bayern. Berl Münch Tierärztl Wochenschr 92:137–141

    Google Scholar 

  • Collins GH, Charleston WAG (1980) Studies onSarcocystis species VII: the effect of temperature on the viability of macrocysts (Sarcocystis gigantea) of sheep. New Zealand Vet J 28:189–191

    Google Scholar 

  • Collins GH, Atkinson E, Charleston WAG (1979) Studies onSarcocystis species III: the macrocystic species of sheep. New Zealand Vet J 27:204–206

    Google Scholar 

  • Erber M (1977) Möglichkeiten des Nachweises und der Differenzierung von zweiSarcocystis-Arten des Schweines. Berl Münch Tierärztl Wochenschr 90:480–482

    Google Scholar 

  • Erber M, Burgkart M (1981) Wirtschaftliche Verluste durch Sarkosporidiose (Sarcocystis ovicanis undS. spec.) bei der Mast von Schaflämmern. Prakt Tierarzt 62:422–427

    Google Scholar 

  • Erber M, Geisel O (1979) Untersuchungen zur Klinik und Pathologie derSarcocystis-suicanis-Infektion beim Schwein. Berl Münch Tierärztl Wochenschr 92:197–202

    Google Scholar 

  • Erber M, Geisel O (1981) Vorkommen und Entwicklung von 2 Sarkosporidienarten des Pferdes. Z Parasitenkd 65:283–291

    Google Scholar 

  • Gestrich R, Schmitt M, Heydorn AO (1974) Pathogenität vonSarcocystis tenella-Sporozysten aus den Fäzes von Hunden für Lämmer. Berl Münch Tierärztl Wochenschr 87:362–363

    Google Scholar 

  • Heydorn AO, Gestrich R (1976) Beiträge zum Lebenszyklus der Sarkosporidien. VII. Entwicklungsstadien vonSarcocystis ovicnis im Schaf. Berl. Münch Tierärztl Wochenschr 89:1–5

    Google Scholar 

  • Heydorn AO, Gestrich R, Mehlhorn H, Rommel M (1975) Proposal for a new nomenclature of the Sarcosporidia. Z Parasitenkd 48:73–82

    Google Scholar 

  • Leek RG, Fayer R, Johnson AJ (1977) Sheep experimentally infected withSarcocystis from dogs. I. Disease in young lambs. J Parasitol 63:642–650

    Google Scholar 

  • Mehlhorn H, Hartley WJ, Heydorn AO (1976) A comparative ultrastructural study of the cyst wall of 13Sarcocystis species. Protistologica 12:451–457

    Google Scholar 

  • Moore S (1980) Two types of ovineSarcocystis macrocysts distinguished by periodic acid-Schiff staining of the cyst walls. New Zealand Vet J 28:101–102

    Google Scholar 

  • Moulé LT (1886) Psorospermies du tissu musculaire du mouton. Bull Mém Soc Centr Méd Vét 4:125–129, table with figures after p. 164

    Google Scholar 

  • Moulé LT (1888) Des sarcosporidies et leur fréquence, principalement chez les animaux de boucherie. Soc Sci Arts Vitry-le-Francois 14:3–42

    Google Scholar 

  • O'Donoghue PJ, Goebel E (1981) The schizogenous proliferation and tissue cyst development in sheep ofSarcocystis sp. from dogs; as revealed by light and electron microscopy. VI. Internat Congr Protozool Warsaw, Poland, Abstr 276

  • Railliet A (1886a) Comment on Moulé (1886) Psorospermies du tissu musculaires du mouton. Bull Mém Soc Centr Méd Vét 4:130

    Google Scholar 

  • Railliet A (1886b) Psorospermies géantes dans l'oesophage et les muscles du mouton. Bull Mém Soc Centr Méd Vét 4:130–134

    Google Scholar 

  • Rommel M, Heydorn AO, Fischle B, Gestrich R (1974) Beiträge zum Lebenszyklus der Sarkosporidien. V. Weitere Endwirte der Sarkosporidien von Rind, Schaf und Schwein und die Bedeutung des Zwischenwirtes für die Verbreitung dieser Parasitose. Berl Münch Tierärztl Wochenschr 87:392–396

    Google Scholar 

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  1. M. Erber

    Present address: , Liebigstr. 19, D-8000, München 22, West Germany

Authors and Affiliations

  1. Institut für Vergleichende Tropenmedizin und Parasitologie, Leopoldstraße 5, D-8000, München 40, Federal Republic of Germany

    M. Erber

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Erber, M. Life cycle ofSarcocystis tenella in sheep and dog. Z. Parasitenkd. 68, 171–180 (1982). https://doi.org/10.1007/BF00935058

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  • DOI: https://doi.org/10.1007/BF00935058

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