Echinococcus multilocularis in Peromyscus moniculatus and Vulpes vulpes from Minnesota

Studies on Sylvatic Echinococcosis. III. Host Occurrence and Geographic Distribution of Echinococcus multilocularis in the North Central United States

“…The purpose of this paper is to summarize these findings, with remarks on their epidemiological significance. Some of the data presented herein have been reported in previous papers (Leiby, 1965;Carney and Leiby, 1968). These papers and other reports on the sylvatic occurrence of E. multilocularis in the conterminous United States and southern Canada are summarized in Table I.…”

“…The specimens were fixed in 10% formalin and stained with Mayer's carmalum. Microtus pennsylvanicus Ord North Dakota Leiby (1965) Saskatoon, Saskatchewan Hnatiuk (1966) Peromyscus maniculatus (Wagner) North Dakota Leiby (1965) Minnesota Carney and Leiby (1968) Winnipeg, Manitoba Leiby et al (1969) Lee (1969 Vulpes vulpes L. North Dakota Leiby and Olsen (1964) Richards (1966) Rausch (1967) Saskatoon, Saskatchewan Hnatiuk (1969) Minnesota Camey and Leiby (1968) * Rausch (1967) concluded that the report by Magath (1965) of E. multilocularis cysts from the liver of a beef cow in Iowa was based upon the multivesicular form of E. granulosus.…”

Presence of Genital Spines in a Male Corynosoma cetaceum Johnston and Best, 1942 (Acanthocephala)

“…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(Ballard, 1984, and in northern Indiana, northwestern Ohio, and east-central Illinois in 1990(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).…”

Presence of Genital Spines in a Male Corynosoma cetaceum Johnston and Best, 1942 (Acanthocephala)

“…Since it was first discovered in the north-central United States in the mid-1960s (Leiby and Olsen, 1964), Echinococcus multilocularis has steadily expanded its range to include all or part of 11 contiguous states. 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(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).…”