Breeding Productivity in Michigan Red Foxes

Switzenberg, D. F.

doi:10.1093/jmammal/31.2.194-b

Cited by 6 publications

(4 citation statements)

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“…Food availability has also been correlated with productivity in other canid populations (Switzenberg 1950;Schofield 1958). Smaller litter sizes and/ or fewer breeding females, and more unoccupied dens were found for red foxes during years of low vole abundance compared to vole peaks (Englund 1970;Kolb & Hewson 1980;Lindstrom 1982).…”

Section: Discussionmentioning

confidence: 99%

Shift in red fox, Vulpes vulpes, mating system associated with El Niño in the Bering Sea

1989

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Section: Discussionmentioning

confidence: 99%

Shift in red fox, Vulpes vulpes, mating system associated with El Niño in the Bering Sea

1989

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“…Nine is the maximum recorded in a large series of uterine counts by Sheldon (1949). Switzenberg (1950) reports litters of 11, 14, and 15, but communal denning of more than one family was suspected in the larger litters. Sheldon (1950) found that two litters in one den was not uncommon.…”

Section: Nov 1954-mentioning

confidence: 94%

“…-Lyon (1936) gives the litter size as 4-9 pups which is similar to the figures of other writers. The average of 210 Michigan red fox litters removed from dens WIl8 4.92 (Switzenberg, 1950) . Counts of youn g foxes seen at or taken from dens permit inaccuracy because of pups overlooked, post-natal mortality, or communal denning.…”

Section: !!mentioning

confidence: 99%

Red Fox Weights and Reproduction in Tippecanoe County, Indiana

Hoffman

Kirkpatrick

1954

Journal of Mammalogy

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“…In the U. S., mean litter size, based on counts of live postpartum juveniles, is reported to vary from 4.2 (Switzenberg 1950, Pearson and Bassett 1946, Storm 1972 to 5.4 pups/litter (Switzenberg 1950). The sex ratio of fetuses is approximately 1:1 (Storm 1972).…”

Section: Reproductionmentioning

confidence: 99%

Computer Simulated Dynamics of a Rabies-Controlled Fox Population

Preston¹

1973

The Journal of Wildlife Management

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Computer simulation was used to examine the epizootiology of rabies in the red fox (Vulpes fulva). A hypothetical fox population was defined by age, sex, and location of its members. Reproduction and the quality and quantity of animal movements were simulated in accordance with available information. Rabies was the sole mortality source. The annual rabies cycle produced by the computer model was similar to that observed in the U. S. and Ontario, Canada. Its temporal dynamics were primarily determined by the relative number of susceptibles available at different times of year. Population mixing associated with juvenile dispersal had only a nominal influence on the rabies incidence pattern. The simulations suggest that the 3-year rabies cycle reported in Europe and Ontario, Canada could be an inherent consequence of interactions between red fox life history and the rabies transmission mechanism. This, however, is probably not true for the 4to 5-year cycles reported from areas where fox populations are primarily limited by factors other than rabies. The bite transmission mechanism appears to be well adapted to fox populations having low interindividual contact rates. In the simulations, each infective rabid fox needed to contact slightly more than 1.25 percent of the susceptible individuals in the vicinity of its travel path for rabies to become enzootic.

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Breeding Productivity in Michigan Red Foxes

Cited by 6 publications

References 0 publications

Shift in red fox, Vulpes vulpes, mating system associated with El Niño in the Bering Sea

Shift in red fox, Vulpes vulpes, mating system associated with El Niño in the Bering Sea

Red Fox Weights and Reproduction in Tippecanoe County, Indiana

Computer Simulated Dynamics of a Rabies-Controlled Fox Population

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