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Science 10 July 1964:
Vol. 145. no. 3628, pp. 162 - 163
DOI: 10.1126/science.145.3628.162
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Articles

Persistence of Neorickettsiae helminthoeca in an Endoparasite of the Pacific Salmon

R. Keith Farrell 1, Marilyn A. Lloyd 2, and Brian Earp 3

1 United States Department of Agriculture, Animal Disease and Parasite Research Division, Fur Animal Disease Laboratory, Washington State University, Pullman
2 Washington State Department of Game, Olympia
3 Washington State Department of Fisheries, Olympia

Silver salmon (Oncorhynchus kisutch) infected with the metacercariae of the "salmon poisoning" fluke (Nanophyetus salmincola) remain infected after they have migrated to sea. Metacercariae remain viable in such salmon for at least 33frac12 months. These metacercariae are capable of transmitting salmon disease (Neorickettsiae helminthoeca) to susceptible dogs throughout this period.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)