The striped skunk (''Mephitis mephitis'') is a skunk of the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

'' Mephitis'' that occurs across much of North America, including southern

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by to ...

, the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

, and northern

Mexico Mexico (Spanish language, Spanish: México), officially the United Mexican States, is a List of sovereign states, country in the southern portion of North America. It is borders of Mexico, bordered to the north by the United States; to the so ...

. It is currently listed as

least concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. ...

by the

IUCN The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

on account of its wide range and ability to adapt to human-modified environments. Striped skunks are

polygamous Crimes Polygamy (from Late Greek (') "state of marriage to many spouses") is the practice of marrying multiple spouses. When a man is married to more than one wife at the same time, sociologists call this polygyny. When a woman is marri ...

omnivores with few natural predators, save for birds of prey. Like all skunks, they possess highly developed musk-filled scent glands to ward off predators. They have a long history of association with humans, having been trapped and captively bred for their fur and kept as pets. The striped skunk is one of the most recognizable of North America's animals, and is a popular figure in cartoons and children's books.

Taxonomy

The striped skunk was first formally named by

Johann Christian Daniel von Schreber Johann Christian Daniel von Schreber (17 January 1739 in Weißensee, Thuringia – 10 December 1810 in Erlangen), often styled J.C.D. von Schreber, was a German naturalist. Career He was appointed professor of'' materia medica'' at the Univer ...

as ''Viverra mephitis''. The type locality is in eastern Canada.

Evolution and subspecies

The earliest fossil finds attributable to ''Mephitis'' were found in the Broadwater site in

Nebraska Nebraska () is a state in the Midwestern region of the United States. It is bordered by South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Kansas to the south; Colorado to the sout ...

, dating back to the

early Pleistocene The Early Pleistocene is an unofficial sub-epoch in the international geologic timescale in chronostratigraphy, being the earliest division of the Pleistocene Epoch within the ongoing Quaternary Period. It is currently estimated to span the time ...

less than 1.8 million years ago. By the

late Pleistocene The Late Pleistocene is an unofficial age in the international geologic timescale in chronostratigraphy, also known as Upper Pleistocene from a stratigraphic perspective. It is intended to be the fourth division of the Pleistocene Epoch withi ...

(70,000–14,500 years ago), the striped skunk was widely distributed throughout the southern United States, and it expanded northwards and westwards by the

Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togeth ...

(10,000–4,500 years ago) following the retreat of the Wisconsin glacier.Barton, H. D., and S. M. Wisely. 2012. Phylogeography of striped skunks (Mephitis mephitis) in North America: Pleistocene dispersal and contemporary population structure. ''Journal of Mammalogy'' 93(1):38-51. Phylogenetic analyses of the species' cytochrome b gene and microsatellite data in 2012 indicated that there are four

phylogroup {{Short pages monitor

Description

The striped skunk is a stoutly-built, short-limbed animal with a small, conical head and a long, heavily furred tail.Coues, E. (1877).
Fur-bearing animals: a monograph of North American Mustelidae, in which an account of the wolverene, the martens or sables, the ermine, the mink and various other kinds of weasels, several species of skunks, the badger, the land and sea otters, and numerous exotic allies of these animals, is contributed to the history of North American mammals
'' Geological and Geographical Survey of the Territories (U.S.). pp. 195-235. Adult males are 10% larger than females, with both sexes measuring between 52 and 77 cm in total body length and usually weighing , though some may weigh . The feet are

plantigrade 151px, Portion of a human skeleton, showing plantigrade habit In terrestrial animals, plantigrade locomotion means walking with the toes and metatarsals flat on the ground. It is one of three forms of locomotion adopted by terrestrial mammals. ...

with bare soles,Rosatte, R. & Lawson, S. (2003). Skunks. In G. Feldhamer, B. Thompson, & J. Chapman (Eds.,
Wild Mammals of North America; biology, management and conservation
' (2nd ed.) Baltimore: Johns Hopkins University Press. pp. 692-707. and are not as broad or flat as those of hog-nosed skunks. The forefeet are armed with five long, curved claws adapted for digging, while those on the hind feet are shorter and straighter. The back left foot of an albino skunk

The color patterns of the fur vary greatly, but generally consist of a black base with a white stripe extending from the head which divides along the shoulders, continuing along the flanks to the rump and tail. Some specimens have a white patch on the chest, while others bear white stripes on the outer surface of the front limbs. Brown or cream-colored mutations occasionally occur.Seton, E. T. (1909).
Life-histories of northern animals : an account of the mammals of Manitoba
'. New York City: Scribner. pp. 966-994 Like all skunks, the striped skunk possesses two highly developed scent glands, one on each side of the anus, containing about 15 milliliters of musk each, which provides a chemical defense against predation. This oily, yellow-colored musk consists of a mixture of powerfully odorous

thiol In organic chemistry, a thiol (; ), or thiol derivative, is any organosulfur compound of the form , where R represents an alkyl or other organic substituent. The functional group itself is referred to as either a thiol group or a sulfhydryl gro ...

s (

sulfur Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formul ...

analogues of alcohols, in older sources called "mercaptans"), which can be sprayed at a distance of several meters. The odor of this musk was likened by Ernest Thompson Seton to a mixture of perfume musk, essence of garlic, burning sulfur and sewer gas "magnified a thousand times", though Clinton Hart Merriam claimed that it isn't "one tenth" as offensive as that produced by

mink Mink are dark-colored, semiaquatic, carnivorous mammals of the genera '' Neogale'' and '' Mustela'' and part of the family Mustelidae, which also includes weasels, otters, and ferrets. There are two extant species referred to as "mink": ...

s and

weasel Weasels are mammals of the genus ''Mustela'' of the family Mustelidae. The genus ''Mustela'' includes the least weasels, polecats, stoats, ferrets and European mink. Members of this genus are small, active predators, with long and slend ...

s. It can be sprayed at a distance of several meters. If sprayed on the eyes, this compound can cause a temporary burning sensation.

Life history

Reproduction and development

The striped skunk is

, and normally breeds once a year, though yearling females who have failed to mate may enter a second

estrous cycle The estrous cycle (, originally ) is the set of recurring physiological changes that are induced by reproductive hormones in most mammalian therian females. Estrous cycles start after sexual maturity in females and are interrupted by anestro ...

a month after the first. The mating season usually occurs between mid-February to mid-April, though it is delayed at higher latitudes. Prior to copulating, the males'

testicles A testicle or testis (plural testes) is the male reproductive gland or gonad in all bilaterians, including humans. It is homologous to the female ovary. The functions of the testes are to produce both sperm and androgens, primarily testosteron ...

swell during the January–February period, with maximum size being attained in March. Males during this period will cover much ground in their search for females, sometimes covering per night. When a male locates a female, he will approach her from the rear and lick her genitals, then bite her on the nape before copulating. A single male may have a harem of several females, which he mates with and defends against other males for a period of about 35 days. Once the mating period has finished, the impregnated females confine themselves to their dens, while the males attempt to rebuild their fat reserves. Striped Skunk

The

gestation period In mammals, pregnancy is the period of reproduction during which a female carries one or more live offspring from implantation in the uterus through gestation. It begins when a fertilized zygote implants in the female's uterus, and ends once ...

lasts around 59–77 days, with kits being born at about mid-May to early June. Litters generally consist of 2–12 kits, with the average being five or six, though a litter of 18 is known from Pennsylvania. Kits are born blind and sparsely furred, weighing 25–40 grams. The eyes open after around three weeks, and are weaned after 42–56 days. Although their musk is still undeveloped, kits of this age will instinctively assume the defensive stand position when threatened. At this point, the kits may accompany their mother outside the den, becoming independent after 2½ months.

Denning and sheltering behaviors

The striped skunk may dig its own dens, though it will appropriate those abandoned by other animals should the opportunity present itself. These dens are normally used only in late fall, winter, and early spring, while females with unweaned kits make use of them in late spring and summer. In cultivated areas, striped skunks will dig their dens in fencerows, likely because they are less likely to be disturbed by machinery or livestock. In winter it is common for a single den to be occupied by multiple females and a single male.Wade-Smith, J. & Verts, B. J. (1982). "Mephitis mephitis" (PDF). ''Mammalian Species'' 173 : 1–7. During this period, the striped skunk saves its energy by lowering its body temperature from 38 °C to 32 °C. Although it will forage for short periods in winter, it primarily depends on its fat reserves in cold weather, and can lose as much as 50% of its body weight.

Ecology

Habitat

The striped skunk inhabits a wide variety of habitats, particularly mixed woodlands, brushy corners and open fields interspersed with wooded ravines and rocky outcrops. Some populations, particularly in northwestern Illinois, prefer cultivated areas over uncultivated ones.

Diet

While primarily an insectivore, the striped skunk is adaptable enough to incorporate other animals and even vegetable matter into its diet. The most frequently consumed insects include grasshoppers, beetles, crickets, caterpillars, other insect larvae and bees. Other invertebrates may include worms, crayfish and other non-insect arthropods. In the winter and spring months, the striped skunk will supplement its diet with vertebrates such as white-footed mice,

vole Voles are small rodents that are relatives of lemmings and hamsters, but with a stouter body; a longer, hairy tail; a slightly rounder head; smaller eyes and ears; and differently formed molars (high-crowned with angular cusps instead of lo ...

s, eggs and the chicks of ground nesting birds. The striped skunk is also known to consume amphibians, reptiles, carrion and fish. Striped skunks inhabiting California's coastal areas will feed on crabs and beached fish. While not adapted for chasing fleet-footed prey, at least one specimen was observed pursuing gray cottontails into their burrows. The skunk will also consume vegetable matter, such as apples,

blueberries Blueberries are a widely distributed and widespread group of perennial flowering plants with blue or purple berries. They are classified in the section ''Cyanococcus'' within the genus ''Vaccinium''. ''Vaccinium'' also includes cranberries, b ...

, black cherries, ground cherries, corn and

nightshade The Solanaceae , or nightshades, are a family (biology), family of flowering plants that ranges from Annual plant, annual and perennial herbs to vines, lianas, epiphytes, shrubs, and trees, and includes a number of agricultural crops, medicinal ...

when in season. Striped skunks are known to use their sharp claws to tear apart rotting logs to find grubs, dig in the soil for insects, and pin down prey. Their practice of digging leaves small-but-noticeable pits in the ground, which can provide evidence of their presence in an area.

Predation

Because of its formidable defensive capability, the striped skunk has few natural enemies. Mammalian predators typically avoid skunks, unless they are starving. Such predators include

cougar The cougar (''Puma concolor'') is a large cat native to the Americas. Its range spans from the Canadian Yukon to the southern Andes in South America and is the most widespread of any large wild terrestrial mammal in the Western Hemisphere. ...

coyote The coyote (''Canis latrans'') is a species of canine native to North America. It is smaller than its close relative, the wolf, and slightly smaller than the closely related eastern wolf and red wolf. It fills much of the same ecological nich ...

bobcat The bobcat (''Lynx rufus''), also known as the red lynx, is a medium-sized cat native to North America. It ranges from southern Canada through most of the contiguous United States to Oaxaca in Mexico. It is listed as Least Concern on the ...

s, badgers, and red and gray foxes. Predatory birds, including golden and

bald eagle The bald eagle (''Haliaeetus leucocephalus'') is a bird of prey found in North America. A sea eagle, it has two known subspecies and forms a species pair with the white-tailed eagle (''Haliaeetus albicilla''), which occupies the same niche as ...

s, and great horned owls tend to have greater success in hunting skunks, though they still risk being blinded by their prey's musk.

Disease

The striped skunk is one of the major carriers of the rabies virus, second only to raccoons in the US where skunks are 25% of annual cases. Skunks are the primary hosts in the north- and south-central United States as well as in Canada. Cases of rabies in this species are generally epizootic and recurrent. They are also host for the

canine parvovirus Canine parvovirus (also referred to as CPV, CPV2, or parvo) is a contagious virus mainly affecting dogs. CPV is highly contagious and is spread from dog to dog by direct or indirect contact with their feces. Vaccines can prevent this infectio ...

and may also suffer from

leptospirosis Leptospirosis is a blood infection caused by the bacteria '' Leptospira''. Signs and symptoms can range from none to mild (headaches, muscle pains, and fevers) to severe ( bleeding in the lungs or meningitis). Weil's disease, the acute, sever ...

Relationships with humans

In culture

The striped skunk is commonly featured in the myths and oral traditions of Native Americans. Some stories try to explain its striped pattern or how it got its smell. Skunks fill various roles in legends and may be featured as heroes, villains,

trickster In mythology and the study of folklore and religion, a trickster is a character in a story ( god, goddess, spirit, human or anthropomorphisation) who exhibits a great degree of intellect or secret knowledge and uses it to play tricks or otherwi ...

s, or monsters. For the Muscogee people, the skunk represented family loyalty and defense of loved ones. The Winnebago people used the skunk to symbolize vanity, being beautiful on the outside but ugly on the inside. The striped skunk was once called the "emblem of America" by Ernest Thompson Seton. It has been prevalent in modern popular culture, being the subject of various jazz and

funk Funk is a music genre that originated in African American communities in the mid-1960s when musicians created a rhythmic, danceable new form of music through a mixture of various music genres that were popular among African Americans in the mi ...

songs like Cab Calloway's "Skunk Song" and the Brecker Brothers' " Some Skunk Funk". The skunk connection in these genres may be due to the term "funk" being a term for strong odor. The novelty song " Dead Skunk" by Loudon Wainwright III was popular in the early 1970s. Skunks are also popular characters in children's stories, comics and cartoons, most notably the

Warner Bros Warner Bros. Entertainment Inc. (commonly known as Warner Bros. or abbreviated as WB) is an American Film studio, film and entertainment studio headquartered at the Warner Bros. Studios, Burbank, Warner Bros. Studios complex in Burbank, Califo ...

character Pepé Le Pew and the

Disney The Walt Disney Company, commonly known as Disney (), is an American multinational mass media and entertainment conglomerate headquartered at the Walt Disney Studios complex in Burbank, California. Disney was originally founded on October ...

character

Flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechanis ...

of the 1942 animated film '' Bambi'', their musky odor making them a source of fear and ostracization.

Trapping and fur use

The striped skunk is one of North America's most sought-after furbearers, and was once the second most harvested after the

muskrat The muskrat (''Ondatra zibethicus'') is a medium-sized semiaquatic rodent native to North America and an introduced species in parts of Europe, Asia, and South America. The muskrat is found in wetlands over a wide range of climates and habita ...

. Its fur is intrinsically valuable, being durable and having rich luster, though this trait decreases with wear and exposure to sunlight. Skunk pelts are divided into four grades, with the most prized being the ones with a greater amount of black. These grades are further subdivided in value according to their locality, with the most valuable occurring in northern regions, where the fur is finer and darker.Lantz, D. E. (1923).
Economic value of North American skunks
'. Washington, D.C.: U.S. Dept. of Agriculture. Skunks are notable for being easy to trap, even approaching traps they had been previously caught in. Because skunks are difficult to kill without having them discharge their musk (and thus ruin their fur) they were typically dispatched with a paralyzing blow to the lower back or drowned if caught in a box trap. Skunk farming largely began during the late 1890s, when there was much foreign demand for their skins, and intensive trapping had largely extirpated the more valuable mostly black-colored specimens. Captive breeding of skunks proved relatively simple when compared to mink and marten farming, as skunks are easier to tame and have less specialized dietary needs. Emphasis was placed on selectively breeding the tamest and darkest colored skunks. Prior to the

First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...

, skunk pelts were primarily shipped to Europe until better methods of deodorizing and processing the skins lead to increased interest in selling them for North American consumption. Despite being easy to breed and manage, skunk farming was not overly profitable, as the relatively low price of the pelts did not compensate for the costs in maintaining them. Nevertheless, raising skunks was considered good practice for amateur fur farmers wishing to later move on to more valuable furbearers like martens, sable, mink and silver foxes. File:Skunks fur skins.jpg, Striped skunk pelts File:Striped skunk tracks.png, Tracks in the snow

Taming

The striped skunk is easily tamed and was often kept in barns to kill rats and mice during the 19th century.

Selective breeding Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant ...

has resulted in the emergence of various color mutations, including black, chocolate-brown or smokey gray and white,

apricot An apricot (, ) is a fruit, or the tree that bears the fruit, of several species in the genus '' Prunus''. Usually, an apricot is from the species '' P. armeniaca'', but the fruits of the other species in ''Prunus'' sect. ''Armeniaca'' are al ...

, albino, white, lavender, champagne and

mahogany Mahogany is a straight- grained, reddish-brown timber of three tropical hardwood species of the genus '' Swietenia'', indigenous to the AmericasBridgewater, Samuel (2012). ''A Natural History of Belize: Inside the Maya Forest''. Austin: U ...

.Cipriani, D. (2011) "Skunks are affectionate, intelligent pets for owners who offer the proper care." ''Critters USA''. pp. 2-6

Other uses

The striped skunk was regularly eaten by trappers and indigenous peoples, provided the animal was not too old or had not sprayed before being killed. American zoologist Clinton Hart Merriam described skunk meat as white, tender, sweet and more delicate than

chicken The chicken (''Gallus gallus domesticus'') is a domesticated junglefowl species, with attributes of wild species such as the grey and the Ceylon junglefowl that are originally from Southeastern Asia. Rooster or cock is a term for an adu ...

. The meat was prized by

Chinese immigrant Waves of Chinese emigration have happened throughout history. They include the emigration to Southeast Asia beginning from the 10th century during the Tang Dynasty, to the Americas during the 19th century, particularly during the California g ...

s, who also bought skunk gall bladders for medicinal purposes.Ingles, L. G. (1947). ''Mammals of California''. Stanford University Press. pp. 69-76 . The fat was once reputed to make an excellent lubricant. The musk was once used as a folk remedy for

asthma Asthma is a long-term inflammatory disease of the airways of the lungs. It is characterized by variable and recurring symptoms, reversible airflow obstruction, and easily triggered bronchospasms. Symptoms include episodes of wheezing, co ...

, despite its very strong odor.

References

{{Authority control Skunks skunk, striped Mammals described in 1776 Fauna of the United States