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Studies of Sarcocystis in Malaysia. II. Comparative ultrastructure of the cyst wall and zoites of Sarcocystis levinei and Sarcocystis fusiformis from the water buffalo, Bubalus bubalis



Studies of Sarcocystis in Malaysia. II. Comparative ultrastructure of the cyst wall and zoites of Sarcocystis levinei and Sarcocystis fusiformis from the water buffalo, Bubalus bubalis



Zeitschrift für Parasitenkunde 57(2): 107-116



The two species of Sarcocystis--S. levinei and S. fusiformis from the water buffalo, Bubalus bubalis, show some ultrastructural similarities in their cyst wall and zoites. The zoites of both species are of about the same size, banana-shaped and have 22 subpellicular microtubules, numerous micronemes, eight rhoptries, a micropore in the region of the micronemes, an elongated mitochondrion, and a nucleus. S. levinei has 200--300 micronemes and S. fusiformis has about 400. The sarcocysts of both species are trabeculated and their cyst walls have cytophaneres containing annulated fibrils and coarse, electron dense granules. The cytophaneres of S. levinei are sloping, with irregular, wavy outlines, whereas S. fusiformis has the cauliflower-type of cytophaneres. This difference in the appearance of the cytophaneres, together with the difference in size of the sarcocysts and their definitive hosts, further confirms that S. levinei and S. fusiformis are two distinct species in the water buffalo.

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Accession: 038982415

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PMID: 104463



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