| contribution to the problem of cyst-producing coccidians. | the problem of life cycles of cyst-producing coccidians, mainly those of the genus sarcocystis, from carnivorous birds has been discussed. oocysts of the "sarcocystic" type have been recovered from 9 species of birds of prey and owls from czechoslovakia. the course of experimental infection in a group of birds consisting of the species tyto alba, asio otus, strix aluco, buteo buteo has been described. we inoculated these birds with cystic stages of the genus sarcocystis obtained from white labor ... | 1978 | 416999 |
| mouse (mus musculus) as intermediate host of sarcocystis sp. from the goshawk (accipiter gentilis). | sporocysts from the goshawk (accipiter gentilis) were experimentally transferred to the mouse (mus musculus). it was found that the goshawk is the host of one of the sarcosporidians inducing muscle sarcocystosis in mice. thin-walled, sporulated oocysts expelled by the goshawk measured 16.5-19.0 x 12.0-13.0 micron. those which measured 12.0-13.5 x 8.2-9.0 micron were widely elliptical, with rounded poles. no asexual reproduction of parasites was detected in the viscera of mice. the cysts started ... | 1986 | 3084365 |
| histopathological changes in the liver tissue of house mouse and common vole during sarcocytosis. | the asexual reproduction of sarcocystis dispersa was studied in the liver of the house mouse. histopathological examinations revealed infection of parenchymal cells with the parasite and diffuse cellular infiltrations with the presence of polymorphonuclear cells, monocytes and eosinophilic leukocytes. the volume and number of cellular infiltrates increased gradually from day 3 till day 10 p.i. then appeared necrotic foci and both phenomena reached the maximum on days 10-12 p.i. on days 21-34 p.i ... | 1986 | 3087845 |
| indirect haemagglutination reaction with sarcocystis dispersa antigen. | a description is given of the preparation of antigen from sarcocystis dispersa cystozoites and the procedure of the indirect haemagglutination test (iha). the antibodies against this antigen were detected in experimentally infected mice from day 20 p.i. (1: 640). in the following weeks the antibody titres reached the value of 1: 40,960. the sera of pigs, sheep and horses spontaneously infected with other sarcocystis species reacted with this antigen in low titres only. the bovine sera gave negat ... | 1982 | 6813203 |
| phylogenetic analysis of sarcocystis spp. of mammals and reptiles supports the coevolution of sarcocystis spp. with their final hosts. | sequences of the small subunit rrna genes were obtained for two coccidians, sarcocystis dispersa and an unnamed sarcocystis sp. which parasitise the european barn owl and an african viperid snake as their final host, respectively, and share mouse as their intermediate host. phylogenetic analysis of the sequence data showed that sarcocystis sp. from the viperid snake is most closely related to another sarcocystis sp. isolated from an american crotalid snake, while s. dispersa grouped with other b ... | 1999 | 10404278 |
| contribution to the serological diagnosis of sarcocystosis. | the importance of the ifa-test (indirect fluorescent antibody test) in the diagnosis of sarcocystosis in the intermediate host has been confirmed in the present paper. we assessed the time of the first appearance of serum antibodies in the intermediate host in mice inoculated experimentally with the species sarcocystis dispersa. by means of the ifa-test, the first antibodies were found on day 20 p.i. cross-reactions among antisera of s. dispersa and a heterologous antigen of s. cernae disclosed ... | 1998 | 105972 |
| heteroxenous coccidia increase the predation risk of parasitized rodents. | we have investigated the influence of heteroxenous coccidia (apicomplexa: eimeriorina) on the predation risk of intermediate hosts. voles infected with frenkelia spp. were found more frequently in buzzards' (buteo buteo) prey than among snap-trapped rodents. to eliminate the possibility of traps selecting for uninfected rodents, a laboratory experiment was performed. mice experimentally infected with sarcocystis dispersa seemed to be more likely caught by the final host, the long-eared owl (asio ... | 1998 | 9881375 |
| [the initial phase of cyst formation in sarcocystis dispersa sarcosporidians]. | six white mice were inoculated orally with sarcocystis dispersa sporocysts and killed on days 10, 12 and 14 post inoculation (p. i.). precyst merozoites were found in leukocytes and muscular cells on days 10 and 12 p. i. young cysts containing only metrocytes were found on days 12 and 14 p. i. precyst merozoites in muscular cells were situated freely, without any parasitophorous vacuole. the process of merozoite transformation into a primary metrocyte runs parallel with the process of sarcocyst ... | 1989 | 2499966 |
| infection of mice immunized with formolized cystozoites of sarcocystis dispersa cerná, kolárová et sulc, 1978. | | 1982 | 6813204 |