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1 March 2000 Rotifers Ingest Oocysts of Cryptosporidium parvum
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Abstract

Six genera of rotifers including Philodina, Monostyla, Epiphanes, Euchlanis, Brachionus, and Asplanchna were exposed to oocysts of Cryptosporidium parvum cleaned of fecal debris. Unstained oocysts and those stained with fluorescein-conjugated monoclonal antibody were added to suspensions of viable rotifers and were examined by phase-contrast, differential interference contrast, and fluorescence microscopy. Rotifers of all six genera were observed ingesting oocysts. A maximum of 25 oocysts was observed in the stomachs of Euchlanis and Brachionus. Euchlanis and Epiphanes were observed excreting boluses containing up to eight oocysts. It was not determined whether rotifers digested or otherwise rendered oocysts nonviable.

Ronald Fayer, James M. Trout, Elizabeth Walsh, and Rebecca Cole "Rotifers Ingest Oocysts of Cryptosporidium parvum," The Journal of Eukaryotic Microbiology 47(2), (1 March 2000). https://doi.org/10.1111/j.1550-7408.2000.tb00026.x
Received: 16 June 1999; Accepted: 26 October 1999; Published: 1 March 2000
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