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1

First report of Sarcocystis rangiferi and second Sarcocystis species with parasite-induced encapsulation in cervids from Central Europe

100%

Stolte M. , Bockhardt I. , Odening K.

Acta Protozoologica

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1997

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tom 36

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nr 2

2

Ultrastructure of sarcocysts from equids

100%

Odening K. , Wesemeier H. H. , Walter G. , Bockhardt I.

Acta Parasitologica

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1995

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tom 40

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nr 1

EN

Sarcocysts were found during the examination of muscle samples from four different Equidae from the zoo in Berlin-Friedrichsfelde (Przewalski’s feral horse, Chapman’s plain zebra, kulan, kiang), a Damara plain zebra from the Cologne zoo, and a domestic horse from Mongolia. Light and electron microscopic features of these sarcocysts correspond largely. The cyst walls of all the six forms represent type 11 from the classification system by Dubey et al. 1989. On this ultrastructural basis, one could postulate the existence of two or only one species, depending on the emphasis that is laid on the presence or absence of large osmiophilic granules within the cyst wall protrusions. Equus caballus przewalskii, E. burchellii chapmani, E. burchellii antiquorum, E. kiang holdereri, and E. onager kulan have not been previously described as hosts for sarcocysts belonging to ТЕМ wall type 11. In addition to the ТЕМ wall type 11 forms, a type 7 form is known in horses. It is not possible for the time being to list Sarcocystis asinus Gadaev, 1978 as a synonym of a Sarcocystis species found in equids. Hence S. asinus is declared a species inquirenda.

3

Sarcocysts in exotic Caprinae [Bovidae] from zoological gardens

100%

Odening K. , Stolte M. , Bockhardt I.

Acta Parasitologica

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1996

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tom 41

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nr 2

EN

Three different forms of sarcocysts from the zoo animals Pseudois nayaur, Capricomis crispus and Ovibos moschatus (Bovidae, Caprinae) were investigated by light and transmission electron microscopy, in special consideration of the cyst wall. Two of these forms were not distinguishable from Sarcocystis capracanis or the pair of sibling species S. hircicanis/ arieticanis by their morphology. They were, therefore, designated as S. cf. capracanis (in Pseudois) and S. cf. hircicanis/arieticanis (in Pseudois, Capricornis and Ovibos) in this paper. The third form (from Capricornis) was not identifiable as one of the species hitherto known. Its cyst wall, provided with stumpy nail-like, in the outline T-shaped villar protrusions, could not be attributed to one of the types established by Dubey et al. (1989). It was, therefore, described as Sarcocystis capricornis sp. n. The Sarcocystis species described in Caprinae so far were discussed.

4

Sarcocystis infection of the African buffalo [Syncerus caffer] in the Kruger National Park, South Africa

88%

Quandt S. , Bengis R. G. , Stolte M. , Odening K. , Bockhardt I.

Acta Parasitologica

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1997

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tom 42

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nr 2

EN

Muscle (tongue and oesophagus) from African buffaloe, Syncerus caffer was examined for the presence of sarcocysts. Twenty-two tongue samples (66.7%) from 33 adult buffaloes (older than one year) were infected with numerous macrocysts and a few microcysts of a Sarcocystis sp. In two of these animals sarcocysts were also found in the oesophagi. Furthermore, an oesophagus from an additional older buffalo was positive. Sarcocysts were not seen in 7 buffaloes younger than one year. Light and electron microscopic investigations revealed sarcocysts with a cyst wall ultrastructure belonging to the type 21 of the classification by Dubey et al. (1989a). For the first time this type of sarcocyst is described in African buffaloes. Encapsulation of the host cell (“secondary cyst wall”), often present in other Sarcocystis species with macrocysts, was lacking. The cyst wall was morphologically similar to S. fusiformis isolated from the water buffalo (Bubalus bubalis). However, dimorphism of cystozoites, not known in S. fusiformis, was noted. Some sarcocysts had short plump, and others long bananashaped cystozoites. This phenomenon is discussed, considering also the possibility of sexual dimorphism.

5

European hare and European rabbit [Lagomorpha] as intermediate hosts of Sarcocystis species [Sporozoa] in Central Europe

75%

Odening K. , Wesemeier H. H. , Pinkowski M. , Walter G. , Sedlaczek J. , Bockhardt I.

Acta Protozoologica

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1994

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tom 33

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nr 3

6

Sarcocystis spp. in antelopes from Southern Africa

75%

Odening K. , Rudolph M. , Quandt S. , Bengis R. G. , Bockhardt I. , Viertel D.

Acta Protozoologica

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1998

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tom 37

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nr 3