The number of Sarcocystis species that infect sea otters (Enhydra lutris) is unknown. Sea otter tissues were recently shown to harbor sarcocysts of S. neurona and of unidentified species of Sarcocystis. Whereas sarcocysts of S. neurona have walls 1–3 μm thick with type 9 villar protrusions, ultrastructure of a distinct thin-walled sarcocyst (0.5–0.7 μm thick) lacking villar protrusions, but instead exhibiting minute type 1 undulations on the sarcocyst wall, is described in this report. Parasites characterized from a sea otter infection were inferred to be related to, but distinct from, other species belonging to Sarcocystis, based on sequencing and phylogenetic analysis of a portion of the beta subunit of the plastid-encoded RNA polymerase gene.
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April 2003
RESEARCH NOTES|
April 01 2003
Sarcocysts of an Unidentified Species of Sarcocystis in the Sea Otter (Enhydra lutris) Available to Purchase
J. P. Dubey;
J. P. Dubey
aParasite Biology, Epidemiology and Systematics Laboratory, Animal and Natural Resources Institute, Agricultural Research Service, United States Department of Agriculture, Building 1001, Beltsville, Maryland 20705-2350. [email protected]
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D. S. Lindsay;
D. S. Lindsay
bDepartment of Biomedical Sciences and Pathobiology, Center for Molecular Medicine and Infectious Diseases, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, 1410 Prices Fork Road, Blacksburg, Virginia 24061-0324
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B. M. Rosenthal;
B. M. Rosenthal
aParasite Biology, Epidemiology and Systematics Laboratory, Animal and Natural Resources Institute, Agricultural Research Service, United States Department of Agriculture, Building 1001, Beltsville, Maryland 20705-2350. [email protected]
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N. J. Thomas
N. J. Thomas
cDepartment of the Interior, United States Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, Wisconsin 53711
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J Parasitol (2003) 89 (2): 397–399.
Citation
J. P. Dubey, D. S. Lindsay, B. M. Rosenthal, N. J. Thomas; Sarcocysts of an Unidentified Species of Sarcocystis in the Sea Otter (Enhydra lutris). J Parasitol 1 April 2003; 89 (2): 397–399. doi: https://doi.org/10.1645/0022-3395(2003)089[0397:SOAUSO]2.0.CO;2
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