Abstract
In the ecology of spotted fever rickettsiae, one of the as yet unsolved problems concerns the significance of small animals in the distribution of Rickettsia rickettsii in nature. In the Bitter Root Valley of western Montana, a great variety of rodents, rabbits and hares are known to serve as the preferred hosts for the immature stages of the vector tick, Dermacentor andersoni.
The authors analyse the susceptibility of various species of small mammals to virulent R. rickettsii and evaluate their efficiency as sources of infection for larval ticks. The results demonstrate that meadow-mice, Columbian ground-squirrels, golden-mantled ground-squirrels, chipmunks and snowshoe hares (the latter to a lesser extent), when bitten by infected ticks, respond with rickettsiaemias of sufficient length and degree to infect normal larval D. andersoni. High infection rates were obtained in ticks that fed during periods of high rickettsial concentrations in the blood.
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Selected References
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- BURGDORFER W., NEWHOUSE V. F., PICKENS E. G., LACKMAN D. B. Ecology of rocky mountain spotted fever in Western Montana. I. Isolation of Rickettsia rickettsii from wild mammals. Am J Hyg. 1962 Nov;76:293–301. doi: 10.1093/oxfordjournals.aje.a120284. [DOI] [PubMed] [Google Scholar]
- GOULD D. J., MIESSE M. L. Recovery of a rickettsia of the spotted fever group from Microtus pennsylvanicus from Virginia. Proc Soc Exp Biol Med. 1954 Apr;85(4):558–561. doi: 10.3181/00379727-85-20950. [DOI] [PubMed] [Google Scholar]
- PARKER R. R., PICKENS E. G., LACKMAN D. B., BELLE E. J., THRAIKILL F. B. Isolation and characterization of Rocky Mountain Spotted Fever Rickettsiae from the rabbit tick Haemaphysalis leporis-palustris Packard. Public Health Rep. 1951 Apr 13;66(15):455–463. [PMC free article] [PubMed] [Google Scholar]
- RILEY V. Adaptation of orbital bleeding technic to rapid serial blood studies. Proc Soc Exp Biol Med. 1960 Aug-Sep;104:751–754. doi: 10.3181/00379727-104-25975. [DOI] [PubMed] [Google Scholar]