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Title:   Author  item
                                            Dubey, Jitenderitem
                                            CAWTHORN, R - UNIV OF PRINCE EDWARD ISLitem
                                            SPEER, C - MONTANA STATE UNIVERSITYitem
                                            WOBESER, G - UNIV OF SASKATCHEWAN
  Submitted to: Journal of Eukaryotic Microbiology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 10/24/2003
                                    Publication  Date: 11/20/2003
                                    Citation: Dubey, J.P., Cawthorn, R.J., Speer, C.A., Wobeser, G.A. 2003. Redescription of the sarcocysts of sarcocystis rileyi (apicomplexa : sarcocystidae. Journal of Eukaryotic Microbiology. 50:476-482.Interpretive Summary: Sarcocystis species are single-celled parasites of livestock and humans.  They can cause morbidity and mortality in livestock.  Scientists at the Beltsville Agricultural Research Center redescribe the structure of Sarcocystis rileyi, a parasite commonly found in ducks.  These findings will be of interest to biologists and parasitologists.
                                Technical Abstract: The intermediate hosts for Sarcocystis rileyi  ( Stiles 1893 ) Minchin 1913 are ducks (Anas spp.), and the striped skunk (Mephitis mephitis) is its definitive host.  The structure of sarcocysts from an experimentally-infected shoveler duck (Anas cylpeata) fed sporocysts from an experimentally-infected M. mephitis was studied and compared with type specimens from a naturally-infected duck.  The experimentally-infected duck was killed 154 days after feeding sporocysts.  By light microscopy the sarcocyst wall was 3-5 um thick with indistinct villar protrusions. Ultrastructurally, the sarcocyst wall was a type-23 cyst wall with anastomosing villar protrusions that were up to 7.5 um long.  The  villar projections contained filamentous structures.  The bradyzoites were 12-14 um long.  Structurally, the sarcocyst from the naturally-infected and experimentally-infected ducks appeared similar.


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