Urocyoncinereoargenteus, the gray fox, commonly inhabits the wooded and brushy regions of northern Colombia, Venezuela, Central America, and the southwestern, western (except Rocky Mountains region and Washington state) and eastern United States.
The introduction of the red fox (Vulpes vulpes) into North America from Europe in the 1600's and increased agricultural development are implicated in the decline of Urocyon populations in Canada.
Urocyon is one of the earliest foxes to appear in the fossil record.
The diet of the grey fox is essentially the same as that of other foxspecies: rodents, rabbits, birds, occasional reptiles, insects, and various plant material.
Although this does not seem to be adversely affecting the grey fox's population, it is a factor which deserves careful attention.
cinereoargenteus is the island grey fox (Urocyon littoralis).
We studied demographics of a population of gray foxes (Urocyoncinereoargenteus) that has been protected for over 50 years on the United States Department of Energy's Savannah River Site, near Aiken, South Carolina.
The greater proportion of females, however, resulted in an overall per capita reproductive rate that was still comparable with populations subject to harvest pressure.
Demographics of a protected population of gray foxes (Urocyoncinereoargenteus) in South Carolina.
We describe polymerase chain reaction (PCR) primers and conditions to amplify one dinucleotide and five tetranucleotide microsatellite DNA loci isolated from the grey fox (Urocyoncinereoargenteus).
The grey fox microsatellite primers developed had three to 10 alleles per locus that yielded observed heterozygosities ranging from 0.222 to 0.889.
Characterization of six microsatellite primers for the grey fox (Urocyoncinereoargenteus).
