American mink territories are held by individual animals with minimal intrasex overlap, but with extensive overlap between animals of the opposite sex. Most territories are in undisturbed, rocky coastal habitats with broad littoral zones and dense cover. Some are on estuaries, rivers and canals near urban areas. Home ranges are typically 16 kilometres (0.623.73 miles) long, with male territories larger than females'. 25 As long as it is close to water, the American mink is not fussy about its choice of den. Mink dens typically consist of long burrows in river banks, holes under logs, tree stumps, or roots and hollow trees, though dens located in rock crevices, drains, and nooks under stone piles and bridges are occasionally selected. The burrows they dig themselves are typically about four inches in diameter and may continue along for 1012 feet (300370 cm) at a depth of 23 feet (6191 cm).
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25 Senses and scent glands edit indentured The American mink relies heavily on sight when foraging. Its eyesight is clearer on land than underwater. Its auditory perception is high enough to detect the ultrasonic vocalisations (116 khz ) of rodent prey. Its sense of smell is comparatively trade weak. Its two anal glands are used for scent marking, either through defecation or by rubbing the anal region on the ground. The secretions of the anal glands are composed of 2,2- dimethyl thietane, 2- ethylthietane, cyclic disulfide, and indole. When stressed, the American mink can expel the contents of its anal glands at a distance of 12 in (30 cm). 20 Scent glands may also be located on the throat and chest. 27 The smell produced by these scent glands was described by Clinton Hart Merriam as more unbearable than that produced by skunks, and added it was "one of the few substances, of animal, vegetable, or mineral origin, that has, on land or sea, rendered. 28 Behaviour edit social and territorial behaviours edit a southern mink (. Vulgivagus ) in a threatening posture American mink emerges from a pond.
20 It does not turn white in winter. 24 a variety paper of different colour mutations have arisen from experimental breeding on fur farms. 15 Locomotion edit On land, the American mink moves by a bounding gait, with speeds of up.5 km/h (4.0 mph). It also climbs trees and swims well. 25 During swimming, the mink propels itself primarily through undulating movements of the trunk. When diving, it undergoes a state of rapid bradycardia, which is likely an adaptation to conserve oxygen. 20 In warm water (24 C (75 F the American mink can swim for three hours without stopping, but in cold water it can die within 27 minutes. 26 It generally dives to depths of 12 in (30 cm) for 10 seconds, though depths of 3 m lasting 60 seconds have been recorded. It typically catches fish after five- to 20-second chases.
Colour is evenly distributed over all the body, with the lower side being only slightly lighter than the upper body. The guard hairs are bright and dark-tawny, often approaching black on the spine. The underfur on the back is very wavy and greyish-tawny with a bluish tint. The tail is darker than the trunk and sometimes becomes pure black on the tip. The chin and lower lip are white. Captive individuals tend to develop irregular white patches on the lower surface of their bodies, though escaped individuals from Tartaria gradually lost these patches. The summer fur is generally shorter, sparser and duller than the winter fur. 19 The thick underfur and oily guard hairs render the pelage water-resistant, with the length of the guard hairs being intermediate between those of otters and polecats, thus indicating the American mink list is incompletely adapted to an aquatic life. It moults twice a year, during spring and autumn.
19 The adult male's penis.2 in (5.6 cm) long, and is covered by a sheath. The baculum is well-developed, being triangular in cross section and curved at the tip. 20 Males measure 1318 in (3445 cm) in body length, while females measure 1215 in (3137.5 cm). The tail measures 610 inches (15.624.7 cm) in males and 68 in (14.821.5 cm) in females. Weights vary with sex and season, with males being heavier than females. In winter, males weigh 13 lb (5001,580 g) and females 12 lb (400780 g). Maximum heaviness occurs in autumn. 13 Fur edit The American mink's winter fur is denser, longer, softer, and more close-fitting than that of the european mink. The winter fur's tone is generally very dark blackish-tawny to light-tawny.
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17 coast of louisiana and Mississippi description edit build edit skull, as essay illustrated. American mink with porcupine quills in its face. Yarmouth, ns the American mink differs from members of the genus Mustela ( stoats and weasels ) by its larger size and stouter form, which closely approach those of martens. It shares with martens a uniformly enlarged, bushy and somewhat tapering tail, rather than a slenderly terete tail with an enlarged bushy tip, as is the case in stoats. 18 The American mink is similar in build to the european mink, but the tail is longer (constituting 3851 of its body length).
19 The American mink has a long body, which allows the species to enter the burrows of prey. Its streamlined shape helps it to reduce water resistance whilst swimming. 20 The skull is similar to that of the european mink, but is more massive, paper narrower, and less elongated, with more strongly developed projections and a wider, shorter cranium. The upper molars are larger and more massive than those of the european mink. 21 The dental formula is: Domestic mink, which are bred in fur farms and are substandard genetically, have.6 smaller brains,.1 smaller hearts, and.2 smaller spleens than wild mink. 22 23 The feet are broad, with webbed digits. 18 It generally has eight nipples, with one pair of inguinal teats and three pairs of abdominal teats.
Vison, it has similar colouration. Males measure.5 inches (65 cm) in total length and.5 inches (22 cm) in tail length. 17 Eastern United States, from the coast of New England south to north Carolina and in the interior to central georgia and Alabama ; westward through southern Pennsylvania and Ohio to missouri and northeastern Texas lutreocephala (Harlan, 1825) rufa (Hamilton-Smith, 1858) Island mink. Nesolestes Heller, 1909 Intermediate in size between. Energumenos, it has rather dark fur.
The fur is Van dyke brown, lighter on the cheeks and sides and darker on the tail. The underparts are walnut brown and white on the chin, with irregular white spots or areas on the throat, chest, inner arms, and abdomen. Males measure.5 inches (62 cm) in body length and.3 inches (19 cm) in tail length. 17 Admiralty Island, alexander Archipelago southern mink. Vulgivaga bangs, 1895 It resembles. Mink, but is paler and smaller, with light brown, rich and lustrous fur which darkens at the end of the tail. Males measure.5 inches (62 cm) in body length and.5 inches (19 cm) in tail length.
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Lowii anderson, 1945 Florida mink. Lutensis Bangs, 1898 A medium-sized subspecies, it has a pale, russet to clay or reddish-brown coat. Males measure 23 inches (58 cm) in body length and 8 inches (20 cm) in tail length. 17 coast of southeastern United States from south Carolina to Florida kenai mink. Melampeplus Elliot, 1904 Darker than energumenos, it has dark chocolate-coloured fur presentation with slightly paler underparts and a white spot on the chin. Males measure 28 inches (71 cm) in body length and.2 inches (18 cm) in tail length. 17 Kenai professional peninsula and cook inlet Common mink. Mink peale and Palisot de beauvois, 1796 A larger and more robust form than.
Males measure.8 inches (73 cm) in body length and.2 inches (18 cm) in tail length 17 Northern, western and central Alaska ; northern yukon and northwestern Mackenzie ; south to the Alaska peninsula and to fort good Hope hudson bay mink. Lacustris Preble, 1902 It has dark chocolate-brown fur above with white on the chin and irregularly distributed on the breast and between the hind legs. Males measure 27 inches (69 cm) in body length and 8 inches (20 cm) in tail length. 17 Interior of Canada from Great bear lake and the western shores of Hudson bay south through Alberta, saskatchewan, and Manitoba to southern North dakota mississippi valley mink. Letifera hollister, 1913 It has a light brown coat with white spots starters on the chin, throat and breast. Males measure 26 inches (66 cm) in body length and.4 inches (24 cm) in tail length. 17 Northern Wisconsin and northern south dakota south to northern Illinois, northern Missouri, and southern Kansas.
Pennsylvania altaica (Ternovskii, 1958) borealis (Brass, 1911) nigrescens (Audubon and Bachman, 1854) tatarica (Popov, 1949) winingus. Aestuarina ginnell, 1916 Resembles. Energumenos, but smaller and has paler, less dense fur 17 Lowlands of west-central California ; west to petaluma and Marin counties. Aniakensis Burns, 1964 Western or Pacific mink. Energumenos Bangs, 1896 A small and dark coloured subspecies with dark sooty-brown fur, the males measure 24 inches (61 cm) in body length and.2 inches (21 cm) in tail length 17 Western North America, from British Columbia south to the sierra nevada mountains in California and. Evagor Hall, 1932 everglades mink. Evergladensis Hamilton, 1948 Alaska mink. Ingens Osgood, 1900 The largest subspecies, it resembles. Energumenos, but is lighter in colour.
It is the animal most frequently farmed for its fur, exceeding the silver fox, sable, marten, and skunk in economic importance. Contents, indigenous names edit evolution edit As a species, the American mink represents a more specialized form than the european mink in the direction of carnivory, as indicated by the more developed structure of the skull. 13 Fossil records of the American mink go back as far as the Irvingtonian, though the species is uncommon among Pleistocene animals. Its fossil range corresponds with the species' current natural range. The American minks of the Pleistocene did not differ much in size or morphology from modern populations, though a slight trend toward increased size is apparent from the Irvingtonian through to the Illinoian and Wisconsinan periods. 14 Although superficially similar to the european mink, studies indicate remote the American mink's closest relative is the siberian weasel ( kolonok ) of Asia. The American mink has been recorded to hybridize with European minks and polecats in captivity, though the hybrid embryos of the American and European minks are usually reabsorbed. 15 Subspecies edit As of 2005, 16 15 subspecies are recognised.
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This article is about animal. For the trademark of the same name, see. The, american mink neovison vison ) is a semiaquatic species supermarket of mustelid native to, north America, though human intervention has expanded its range to many parts. Europe and, south America. Because of range expansion, the American mink is classed as a least-concern species by the, iucn. 1, since the extinction of the sea mink, the American mink is the only extant member of the genus, neovison. The American mink is a carnivore that feeds on rodents, fish, crustaceans, frogs, and birds. In its introduced range in Europe it has been classified as an invasive species linked to declines in, european mink, pyrenean desman, and water vole populations.