By L. Lowe-Jinde, A.J. Niimi
Journal of Great Lakes Research, Volume 9, Issue 4, 1983, Pages 588-589, ISSN 0380-1330, DOI: 10.1016/S0380-1330(83)71932-5.

During the period June-October 1981, fish, including lake trout (Salvelinus namaycush), brown trout (Salmo trutta), rainbow trout (Salmo gairdneri) and coho salmon (Oncorhynchus kisutch), were collected from four locations on Lake Ontario. In addition, juvenile coho salmon reared from Lake Ontario fish eggs and maintained in a hatchery were collected. Subsequently, air-dried blood smears were stained with Leishman-Giesma and examined under oil emersion for Trypanoplasma salmositica. In this study of 131 fish, no T. salmositica were found. From these findings it may be assumed that T. salmositica are either rare or not present in Lake Ontario salmonids.
Keywords: Fish diseases; trout; salmon

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