Vps Gray Key Download
Rosalyn Ivancevic
The gray wolf (Canis lupus), a native Washington species, was nearly eradicated from the state in the early 1900s. Wolves are returning to Washington on their own, dispersing from populations in nearby states and provinces--wolves were never reintroduced to Washington.
The gray fox is easily distinguishable from the red fox in that they have a mane of short, stiff black hairs along the back leading to a black-tipped tail. Coloration of their upper-parts appears grizzled as a result of multi-colored guard hairs. The remainder of their pelage is usually a variation of reds and browns with buff or gray underfur. Their face is distinctly marked with white, black, and rufous coloration. Total length, including the tail ranges from 31-44 inches and weight ranges from 7-13 pounds, with little difference between males and females.
Ranging across New York State, gray fox inhabit a mixture of deciduous woodlands, brushy and rocky areas. Old fields bordering extensive forested areas and interspersed with farmlands may serve as ideal foraging grounds.
Small mammals make up the majority of the food base of the gray fox. Mice, voles, and cottontail rabbits serve as staples but they have been known to eat birds, amphibians and reptiles, various arthropods, and carrion. They will also forage for a variety of hard and soft mast such as acorns, grapes, apples and in farm country, corn.
Tree climbing is one of the most notable adaptations in the gray fox. Gray fox have been reported to den several yards above the ground. This is not only advantageous in escaping predators such as coyotes, it may also improve their ability to find food. By gripping the bole of the tree with their front paws, and as they push off with their hind feet, they will let go with their front and re-grip the bole of the tree higher up. Once they're up in the crown they tend to jump from branch to branch. Descent is backwards or if the tree is leaning they will run down the trunk of the tree.
Due to their more aggressive behavior, Gray fox prefer to hunt thicker cover than the more timid red fox. The gray fox's preference for thicker cover, aggressive behavior, and the ability to climb trees minimizes the effect that eastern coyotes have on their population. The red foxes preference for open terrain where they are more visible and farther away from cover allow coyotes to suppress red fox populations where coyotes are abundant.
Across its range the gray fox serves as a host to over thirty different external parasites that includes lice, ticks, mites, chiggers and fleas. Internal parasites include roundworms, flatworms, tapeworms and acanthocephalans.
Unlike the red fox, the gray fox exhibits a natural resistance to sarcoptic mange, a mite that causes irritation resulting in a thickening of the skin, loss of hair, and eventual death due to either malnourishment or hypothermia. Rabies has been reported in New York specimens, but canine distemper appears to be the leading mortality factor, in terms of diseases, affecting wild gray fox populations.
In terms of predators, humans are likely the primary cause of mortality in this species through trapping and automobile collisions. Where encounters occur, the Eastern coyote will undoubtedly predate gray fox, as may bobcat and some of the larger raptors such as great horned owls.
Phenotype: The gray gene causes a progressive depigmentation of the hair, often resulting in a color that is almost completely white by 6-8 years of age, and can act on any base coat color.
The gray gene causes progressive depigmentation of the hair, often resulting in a coat color that is almost completely white by the age of 6-8 years. Horses that inherit progressive gray can be born any color, then begin gradually to show white hairs mixed with the colored throughout the body. Usually the first signs of gray hair can be found on the head, particularly around the eyes.
Gray is dominant, therefore a single copy of the gray allele will cause a horse to turn gray. If a horse has two copies of gray, all offspring of this horse will be gray. Research indicates that horses with one copy of gray often retain some of the original pigment while horses with two copies of gray tend to progress to almost completely white.
Gray is found in many breeds and is the predominant color of the Lipizzan breed. Researchers at Uppsala University in Sweden discovered that a 4.6 kilobases duplication in intron 6 of gene syntaxin 17 (STX17) produces progressive graying in horses. Their research hypothesized that the mutation in STX17 affects the production of melanocytes and thus predisposes gray horses to melanoma as well as causes the graying of the coat.
Gray horses have a high incidence of dermal melanomas that are commonly seen around the tail and head. Over 70% of gray horses older than 15 years will develop melanoma. Gray homozygotes are more likely to develop melanoma than heterozygotes. Gray horses that are also homozygous for black (a/a genotype at the Agouti locus) have a higher risk for melanoma. Many gray horses show depigmentation of the skin around the eyes, mouth, and anus, but there are no known additional health risks associated with this condition.
Testing for this gray variant can help owners identify homozygous horses (animals with two copies of the variant) which will always produce gray offspring, and can assist in determining a foal's coat color, as gray is a progressive pigmentation pattern.
Pielberg, G. R., Golovko, A., Sundström, E., Curik, I., Lennartsson, J., Seltenhammer, M. H., Druml, T., Binns, M., Fitzsimmons, C., Lindgren, G., Sandberg, K., Baumung, R., Vetterlein, M., Strömberg, S., Grabherr, M., Wade, C., Lindblad-Toh, K., Pontén, F., Heldin, C.H., Sölkner, J., & Andersson, L. (2008). A cis-acting regulatory mutation causes premature hair graying and susceptibility to melanoma in the horse. Nature Genetics, 40(8), 1004-1009. doi: 10.1038/ng.185
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