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Cryptosporidium parvum oocysts in zebra mussels (Dreissena polymorpha): evidence from the St. Lawrence River

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Abstract

Molluscan shellfish can recover and concentrate environmentally derived waterborne pathogens and can be used for the sanitary assessment of water quality. Oocysts of Cryptosporidium parvum (genotype 1) were identified in zebra mussels (Dreissena polymorpha) from the St. Lawrence River, Quebec. Approximately 67 oocysts/ml of hemolymph and 129 oocysts/g of soft tissue were recovered. The adjusted concentration of oocysts per gram of tissue was 2.2 × 102, and approximately 4.4 × 102 oocysts were recovered from a single mussel. Zebra mussels can serve as biological indicators of waterborne contamination with Cryptosporidium.

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Authors and Affiliations

  1. Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA e-mail: tgraczyk@jhsph.edu Tel.: +1-410-6144984; Fax: +1-410-9550105, , , , , , TP

    Thaddeus K. Graczyk & Barbara Mhangami-Ruwende

  2. St. Lawrence Centre, Environment Canada, Montreal, Quebec H2Y 2E7, Canada, , , , , , CA

    David J. Marcogliese & Yves de Lafontaine

  3. Division of Parasitic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Public Health Service, U.S. Department of Health and Public Services, Atlanta, GA 30341, USA, , , , , , US

    Alexandre J. Da Silva & Norman J. Pieniazek

Authors
  1. Thaddeus K. Graczyk
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  2. David J. Marcogliese
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  3. Yves de Lafontaine
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  4. Alexandre J. Da Silva
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  5. Barbara Mhangami-Ruwende
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  6. Norman J. Pieniazek
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Additional information

Received: 22 May 2000 / Accepted: 17 July 2000

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Graczyk, T., Marcogliese, D., de Lafontaine, Y. et al. Cryptosporidium parvum oocysts in zebra mussels (Dreissena polymorpha): evidence from the St. Lawrence River. Parasitol Res 87, 231–234 (2001). https://doi.org/10.1007/s004360000293

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  • DOI: https://doi.org/10.1007/s004360000293

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