Grossly visible sarcocysts were seen in the skeletal muscles of 1 of 12 13-lined ground squirrels, Spermophilus tridecemlineatus tridecemlineatus, collected in Nebraska. The tissue cyst wall was up to 5.0 μm thick and contained spikelike projections. Transmission electron microscopy of tissue cysts revealed they were similar to Sarcocystis campestris Cawthorn, Wobeser, and Gajadhar, 1983, previously known only from experimental infections in Richardson's ground squirrel Spermophilus richardsonii. Prominent electron-dense bodies were observed lining the microfilaments present in the spikelike projections of the sarcocyst wall. This is the first report of S. campestris in a natural intermediate host and the first report of this parasite outside of Saskatoon, Canada.
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October 2000
RESEARCH NOTES|
October 01 2000
Sarcocystis campestris From Naturally Infected 13-Lined Ground Squirrels, Spermophilus tridecemlineatus tridecemlineatus, From Nebraska
David S. Lindsay;
David S. Lindsay
aCenter for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathobiology, Virginia–Maryland Regional College of Veterinary Medicine, Virginia Tech, 1410 Prices Fork Road, Blacksburg, Virginia 24061-0342
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Richard D. McKown;
Richard D. McKown
aCenter for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathobiology, Virginia–Maryland Regional College of Veterinary Medicine, Virginia Tech, 1410 Prices Fork Road, Blacksburg, Virginia 24061-0342
b9070 West 12th Street, Juniata, Nebraska 68955
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J. P. Dubey
J. P. Dubey
aCenter for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathobiology, Virginia–Maryland Regional College of Veterinary Medicine, Virginia Tech, 1410 Prices Fork Road, Blacksburg, Virginia 24061-0342
cUnited States Department of Agriculture, Agricultural Research Service, Livestock and Poultry Sciences Institute, Parasite Biology and Epidemiology Laboratory, Beltsville, Maryland 20705
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J Parasitol (2000) 86 (5): 1159–1161.
Citation
David S. Lindsay, Richard D. McKown, J. P. Dubey; Sarcocystis campestris From Naturally Infected 13-Lined Ground Squirrels, Spermophilus tridecemlineatus tridecemlineatus, From Nebraska. J Parasitol 1 October 2000; 86 (5): 1159–1161. doi: https://doi.org/10.1645/0022-3395(2000)086[1159:SCFNIL]2.0.CO;2
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