Long-Term Survival of Toxoplasma gondii Sporulated Oocysts in Seawater

David S. Lindsay; J. P. Dubey

doi:10.1645/GE-1919.1

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David S. Lindsay, J. P. Dubey^*

^*United States Department of Agriculture, Agricultural Research Service, Animal and Natural Resources Institute, Building 1001, Building 1001, Beltsville, Maryland 20705. e-mail: lindsayd@vt.edu

Abstract

Toxoplasma gondii is now recognized as an important pathogen in costal marine mammals. Oocysts from cat feces are believed to be washed into seawater and serve as a source of infection via transport hosts. Experimentally, it has been demonstrated that T. gondii oocysts can sporulate in seawater and remain infectious for mice for up to 6 mo. The present study examined the long-term survival of T. gondii in seawater (15 ppt NaCl) kept at 4 C or at room temperature. Oocysts kept at 4 C for 24 mo were orally infectious for mice, while those kept at room temperature for 24 mo were not.

Citation Download Citation

David S. Lindsay and J. P. Dubey "Long-Term Survival of Toxoplasma gondii Sporulated Oocysts in Seawater," Journal of Parasitology 95(4), 1019-1020, (1 August 2009). https://doi.org/10.1645/GE-1919.1

Published: 1 August 2009

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