The Natural Occurrence of Echinococcus Multilocularis in the Bushy-Tailed Woodrat, Neotoma Cinerea Rupicola, in Wyoming

Global Distribution of Alveolar and Cystic Echinococcosis

“…In the NCR, the parasite has been reported from deer mice (Peromyscus maniculatus), house mice (M. musculus), meadow voles (Microtus pennsylvanicus), southern red backed voles (Myodes gapperi), bushy-tailed woodrats (Neotoma cinerea), and muskrats (O. zibethicus) Gesy and Jenkins, 2015;Holmes et al, 1971;Kritsky et al, 1977;Leiby et al, 1970;Liccioli et al, 2013). In the NCR, prevalence is so low and studies so few that geographic and seasonal trends are not readily apparent.…”

“…as case report on map) and Missouri is based on one unusual intermediate host and unpublished data in red fox (V. vulpes), respectively (Kritsky et al, 1977;Schantz et al, 1995). Central Indiana remains the southern limit of the parasite based on published data (Melotti et al, 2015).…”

Distribution and Prevalence of Echinococcus multilocularis in Wild Predators in Nebraska, Kansas, and Wyoming

“…The parasite was found in wild canids or rodents in South Dakota, Iowa, Minnesota, and Montana in 1965-1969(Carney and Leiby, 1968Leiby et al, 1970;Rausch and Richards, 1971); in a wild woodrat in southeastern Wyoming in 1976 (Kritsky et al, 1977); and in wild canids in northeastern Nebraska and northern Illinois in 1981-1982(Ballard and Vande Vusse, 1983), in Wisconsin in 1982-1983(Ballard, 1984, and in northern Indiana, northwestern Ohio, and east-central Illinois in 1990-1991(Storandt and Kazacos, 1993. Annual surveys conducted in eastern South Dakota in 1987-1991 found a high prevalence of infection in red foxes in that area (64.0-88.9%, mean 74.5%; Hildreth et al, 2000).…”

“…Animals examined included 11 red foxes from the western panhandle of Nebraska; 5 red foxes and 30 coyotes from southern Nebraska; 56 red foxes and 1 coyote from northeastern Nebraska; 20 red foxes, 63 coyotes, and 13 bobcats from northern Kansas; 2 red foxes, 26 coyotes, FIGURE 1. Distribution of Echinococcus multilocularis in wild canids in Nebraska, Kansas, and Wyoming, including data for Nebraska from Ballard and Vande Vusse (1983), and for a rodent infection in Wyoming from Kritsky et al (1977). Nebraska (1994Nebraska ( -1996 In North America, Echinococcus multilocularis occurs in 2 endemic areas: 1 encompassing the tundra zone of Alaska and Canada and the other the central part of the continent (Rausch, 1985(Rausch, , 1995.…”

Biology and Diseases of Other Rodents

“…Encysted larval Echinococcus multilocularis was found in the liver of a bushy-tailed wood rat in Wyoming (Kritsky et al, 1977). Protoscolices and calcareous corpuscles were absent.…”