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Grey Fox

Abiotic Factor

Reproduction

Introduction

An abiotic factors that can affect the grey fox are limited. Mainly because they are highly adaptive mammals. However, when it comes to the population of an area, if their habitat is destroyed they would tend to migrate to another area where they could thrive. Natural occurrences, like a forest fire or major storms flooding or freezing the habitat, could potentially destroy their home, or cause death to the foxes in that area.

The grey fox reproduces like most other mammals. After fertilization off the female's egg, the gestation period lasts about 53 days. Each litter of pups ranges but up to seven pups can be born each time. Sexual maturity occurs about 10 months after birth. And the fox is one of the mammals that meet with only one partner in their life. To mate, the fox barks, and males will sometimes lift their hind legs to display their genitalia to females.

The scientific name for the grey fox is Urocyon cinereoargentus. I did not observe this mammal in person. I chose the grey fox after researching different organisms in my region. I chose this specific animal because I like the canidae family and thought it could be interesting.

Adaptation

Dietary Habits

It is believed that the main reason the grey fox has survived so long throughout history (dating back to the 1600's) is their ability to adapt. Which is one other special trait to this organism. This ability is also why abiotic factors may not have a large impact on the species.

Habitat

The grey fox eats small vertebrae and inter-vertebrae organisms, as well as, vegetables and fruits. They obtain their food much like other predators, by stalking and hunting their prey. When they have excess food, they will bury it and mark the location by urinating on it.

Climbing Trees

Biomes in which the grey fox can be found are: savannah or grassland, forests, and shrub forests. This means they can be found from southern Canada down to northern Columbia. Only regions they are not found within the U.S, is the Rocky Mountain and Great Plains Regions.

A trait specific to the grey fox that no other member of the conidae family has, is that they can climb trees. This ability is attributed to their hooked claws. This is one of their main defenses to their predators. They have speed, however, do not have a high amount of agility. They also use this to climb and find a place to safely sleep or to stalk their prey.

Conservation Status

References

According to the International Union for the Conservation of Nature (IUCN) the grey fox conservation status is least concerned.

Bozarth, Christine A., et al. “Phylogeography of the gray fox (Urocyon cinereoargenteus) in the Eastern United States.” Journal of Mammalogy, vol. 92, no. 2, 15 Apr. 2011, pp. 283–294., academic.oup.com/jmammal/article/92/2/283/863160/Phylogeography-of-the-gray-fox-Urocyon.

Brant, S. “Grey Fox.” Blue Planet Biomes, 2002, www.blueplanetbiomes.org/grey_fox.htm.

“Common Gray Fox - Urocyon cinereoargenteus - Details.” Encyclopedia of Life, eol.org/pages/328611/details#morphology.

“Gray Fox.” Fox Facts and Information, www.foxesworlds.com/gray-fox/.

“Gray Fox - Urocyon cinereoargenteus.” Gray Fox - Urocyon cinereoargenteus - NatureWorks, New Hampshire PBS, 2017, www.nhptv.org/natureworks/grayfox.htm.

“The Mammals of Texas.” Common Gray Fox (Urocyon cinereoargenteus), www.nsrl.ttu.edu/tmot1/uroccine.htm.

“Urocyon cinereoargenteus .” Urocyon cinereoargenteus (Gray Fox, Grey Fox, Tree Fox), 1 Mar. 2016, www.iucnredlist.org/details/22780/0.

Vu, Long. “Urocyon cinereoargenteus (Gray fox).” Animal Diversity Web, University of Michigan, 2014, animaldiversity.org/accounts/Urocyon_cinereoargenteus/.

“Maryland Mammals: Grey Fox.” Dnr.maryland.gov, dnr.maryland.gov/wildlife/Pages/plants_wildlife/Gray_Fox.aspx.

Biotic Factor

Biotic factors that dictate the habitat and life of the fox are dependent on the population of coyotes as they are one of the fox's main predators. Other factors would be the abundance of food for the fox. Such as rabbit and vegetation abundances.

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