Wikipedia

Wolverine

This article is about the animal. For the Marvel Comics character, see Wolverine (character). For other uses, see Wolverine (disambiguation).
Not to be confused with kinkajou.

The wolverine (/ˈwʊlvəriːn/ WUUL-və-reen, US also /ˌwʊlvəˈriːn/ WUUL-və-REEN;[4] Gulo gulo), also called the carcajou or quickhatch (from East Cree, kwiihkwahaacheew), is the largest land-dwelling member of the family Mustelidae. It is a muscular carnivore and a solitary animal.[2] The wolverine has a reputation for ferocity and strength out of proportion to its size, with the documented ability to kill prey many times larger than itself.

Wolverine
Temporal range: Pleistocene–recent, 2.588–0 Ma
↓
[1]

Vulnerable  (IUCN 3.1)[3] (Europe)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Mustelidae
Genus: Gulo
Species:
G. gulo
Binomial name
Gulo gulo
Subspecies

American wolverine (G. g. luscus)
Eurasian wolverine (G. g. gulo)

Wolverine ranges
Synonyms

Mustela gulo Linnaeus, 1758
Ursus luscus Linnaeus, 1758

The wolverine is found primarily in remote reaches of the Northern boreal forests and subarctic and alpine tundra of the Northern Hemisphere, with the greatest numbers in Northern Canada, the U.S. state of Alaska, the mainland Nordic countries of Europe, and throughout western Russia and Siberia. Its population has steadily declined since the 19th century owing to trapping, range reduction and habitat fragmentation. The wolverine is now essentially absent from the southern end of its range in both Europe and North America.

Naming

The wolverine's questionable reputation as an insatiable glutton (reflected in its Latin genus name Gulo, meaning "glutton") may be in part due to a false etymology. The less common name for the animal in Norwegian, fjellfross, meaning "mountain cat", is thought to have worked its way into German as Vielfraß,[5] which means "glutton" (literally "devours much"). Its name in other West Germanic languages is similar (e.g. Dutch: veelvraat).

The Finnish name is ahma, derived from ahmatti, which is translated as "glutton". Similarly, the Estonian name is ahm, with the equivalent meaning to the Finnish name. In Lithuanian, it is ernis; in Latvian, tinis or āmrija.

The Eastern Slavic росомаха (rosomakha) and the Polish and Czech name rosomák seem to be borrowed from the Finnish rasva-maha (fat belly). Similarly, the Hungarian name is rozsomák or torkosborz which means "gluttonous badger".[citation needed]

In French-speaking parts of Canada, the wolverine is referred to as carcajou, borrowed from the Innu-aimun or Montagnais kuàkuàtsheu.[6] However, in France, the wolverine's name is glouton (glutton).

Purported gluttony is reflected neither in the English name wolverine nor in the names used in North Germanic languages. The English word wolverine (alteration of the earlier form, wolvering, of uncertain origin) probably implies "a little wolf". The name in Proto-Norse, erafaz and Old Norse, jarfr, lives on in the regular Icelandic name jarfi, regular Norwegian name jerv, regular Swedish name järv and regular Danish name jærv.

Taxonomy and evolutionary history

Classification

 
Wolverine skull from the Pleistocene of Germany at the Natural History Museum, Berlin
 
Stuffed individual at the Museo Civico di Storia Naturale Giacomo Doria, Italy

Genetic evidence suggests that the wolverine is most closely related to the tayra and martens, all of which shared a Eurasian ancestor.[7]

There are two subspecies: the Old World form, Gulo gulo gulo, and the New World form, G. g. luscus. Some authors had described as many as four additional North American subspecies, including ones limited to Vancouver Island (G. g. vancouverensis) and the Kenai Peninsula in Alaska (G. g. katschemakensis). However, the most currently accepted taxonomy recognizes either the two continental subspecies or G. gulo as a single Holarctic taxon.[2][8]

Evolution

Recently compiled genetic evidence suggests most of North America's wolverines are descended from a single source, likely originating from Beringia during the last glaciation and rapidly expanding thereafter, though considerable uncertainty to this conclusion is due to the difficulty of collecting samples in the extremely depleted southern extent of the range.[8]

Physical characteristics

 
Skull
 
Skeleton

Anatomically, the wolverine is an elongated animal that is low to the ground. With strong limbs, broad and rounded head, small eyes and short rounded ears, it most closely resembles a large fisher. Though its legs are short, its large, five-toed paws with crampon-like claws and plantigrade posture enable it to climb up and over steep cliffs, trees and snow-covered peaks with relative ease.[9]

The adult wolverine is about the size of a medium dog, with a body length ranging from 65–109 cm (26–43 in); standing 36–45 cm (14–18 in) at the shoulder; and a tail length of 17–26 cm (6 1⁄2–10 in). Weight is usually 11–18 kg (24–40 lb) in males, and in females 8–12 kg (18–26 lb).[10][11][12][13][14] Exceptionally large males of as much as 32 kg (71 lb) are referenced in Soviet literature, though such weights are deemed in Mammals of the Soviet Union to be improbable.[15][16][17] The males are often 10–15% larger than the females in linear measurements and can be 30–40% greater in weight. According to some sources, Eurasian wolverines are claimed to be larger and heavier than those in North America, with weights reaching up to 20 kg (44 lb). However, this may refer more specifically to areas such as Siberia, as data from Fennoscandian wolverines shows they are typically around the same size as their American counterparts.[16][18][19][20][21] It is the largest of terrestrial mustelids; only the marine-dwelling sea otter, the giant otter of the Amazon basin and the semi-aquatic African clawless otter are larger—while the European badger may reach a similar body mass, especially in autumn.

Wolverines have thick, dark, oily fur which is highly hydrophobic, making it resistant to frost. This has led to its traditional popularity among hunters and trappers as a lining in jackets and parkas in Arctic conditions. A light-silvery facial mask is distinct in some individuals, and a pale buff stripe runs laterally from the shoulders along the side and crossing the rump just above a 25–35 cm (10–14 in) bushy tail. Some individuals display prominent white hair patches on their throats or chests.[9]

Like many other mustelids, it has potent anal scent glands used for marking territory and sexual signaling. The pungent odor has given rise to the nicknames "skunk bear" and "nasty cat." The anal gland secretion for the samples obtained from six animal's secretion was complex and variable: 123 compounds were detected in total, with the number per animal ranging from 45 to 71 compounds. Only six compounds were common to all extracts: 3-methylbutanoic acid, 2-methylbutanoic acid, phenylacetic acid, alpha-tocopherol, cholesterol, and a compound tentatively identified as 2-methyldecanoic acid. The highly odoriferous thietanes and dithiolanes found in anal gland secretions of some members of the Mustelinae [ferrets, mink, stoats, and weasels (Mustela spp.) and zorillas (Ictonyx spp.)] were not observed. The composition of the wolverine's anal gland secretion is similar to that of two other members of the Mustelinae, the pine and beech marten (Martes spp.)[22]

Wolverines, like other mustelids, possess a special upper molar in the back of the mouth that is rotated 90 degrees, towards the inside of the mouth. This special characteristic allows wolverines to tear off meat from prey or carrion that has been frozen solid.[23][24]

Distribution

 
Wolverine on rocky terrain
 
Wolverine tracks on Mt. Forbes

Wolverines live primarily in isolated arctic, boreal, and alpine regions of northern Canada, Alaska, Siberia, and Fennoscandia; they are also native to European Russia, the Baltic countries, the Russian Far East, northeast China and Mongolia.[25][26][27][28]

Wolverine remains have been found in Ukraine, but they are extirpated there today and it is unclear whether the wolverines would have formed sustainable populations.[29]

Unique records of encounters with wolverines have been noted in Latvia, the most recent one being in late July 2022 (although it can be disputed because of the unclear footage); the population was widespread in the 16th and 17th centuries, but nowadays it is not native to the area.[30]

Most New World wolverines live in Canada and Alaska.[31] However, wolverines were once recorded as also being present in Colorado,[32] areas of the southwestern United States (Arizona and New Mexico), the Midwest (Indiana, Nebraska, North and South Dakota, Ohio, Minnesota, and Wisconsin), New England (Maine, New Hampshire, Vermont, and Massachusetts) and in New York[33] and Pennsylvania.[34]

In the Sierra Nevada, wolverines were sighted near Winnemucca Lake in spring 1995 and at Toe Jam Lake north of the Yosemite border in 1996; and later photographed by baited cameras, including in 2008 and 2009, near Lake Tahoe.[35][36][37][38] According to a 2014 U.S. Fish and Wildlife Service publication, "wolverines are found in the North Cascades in Washington and the Northern Rocky Mountains in Idaho, Montana, Oregon (Wallowa Range), and Wyoming. Individual wolverines have also moved into historic range in the Sierra Nevada Mountains of California and the Southern Rocky Mountains of Colorado, but have not established breeding populations in these areas".[39] In 2022, Colorado Parks and Wildlife considered plans to reintroduce the wolverine to the state.[40]

Wolverines are also found in Utah but are very rarely seen, with only six confirmed sightings since the first confirmed sighting in 1979. Three of these six confirmed Utah sightings have been caught on video.[41] A wolverine, a male, was finally captured and tagged in Utah in 2022 before being released back into the wild to better understand the animal's range.[42][43]

In August 2020, the National Park Service reported that wolverines had been sighted at Mount Rainier, Washington, for the first time in more than a century. The sighting was of a reproductive female and her two offspring.[44]

In 2004, the first confirmed sighting of a wolverine in Michigan since the early 19th century took place, when a Michigan Department of Natural Resources wildlife biologist photographed a wolverine in Ubly, Michigan.[45] The specimen was found dead at the Minden City State Game Area in Sanilac County, Michigan in 2010.[46]

Behavior and ecology

Video of a wolverine in the Korkeasaari Zoo of Helsinki

Diet and hunting

 
Wolverine with prey in Finland

Wolverines are primarily scavengers.[47] Most of their food is carrion, especially in winter and early spring. They may find carrion themselves, feed on it after the predator (often, a wolf pack) has finished, or simply take it from another predator. Wolverines are known to follow wolf and lynx trails to scavenge the remains of their kills. Whether eating live prey or carrion, the wolverine's feeding style appears voracious, leading to the nickname of "glutton" (also the basis of the scientific name). However, this feeding style is believed to be an adaptation to food scarcity, especially in winter.[48]

The wolverine is also a powerful and versatile predator. Its prey mainly consists of small to medium-sized mammals, but wolverines have been recorded killing prey many times larger than itself, such as adult deer. Prey species include porcupines, squirrels, chipmunks, beavers, marmots, moles, gophers, rabbits, voles, mice, rats, shrews, lemmings, caribou, roe deer, white-tailed deer, mule deer, sheep, goats, cattle, bison, moose,[49] and elk.[50] Smaller predators are occasionally preyed on, including martens, mink, foxes, Eurasian lynx,[51] weasels,[51] coyote, and wolf pups. Wolverines have also been known to kill Canada lynx in the Yukon of Canada.[52] Wolverines often pursue live prey that are relatively easy to obtain, including animals caught in traps, newborn mammals, and deer (including adult moose and elk) when they are weakened by winter or immobilized by heavy snow. Their diets are sometimes supplemented by birds' eggs, birds (especially geese), roots, seeds, insect larvae, and berries. Adult wolverines appear to be one of the few conspecific mammal carnivores to actively pose a threat to golden eagles. Wolverines were observed to prey on nestling golden eagles in Denali National Park.[53] During incubation in Northern Sweden, an incubating adult golden eagle was killed on its nest by a wolverine.[54]

Wolverines inhabiting the Old World (specifically, Fennoscandia) hunt more actively than their North American relatives.[55] This may be because competing predator populations in Eurasia are less dense, making it more practical for the wolverine to hunt for itself than to wait for another animal to make a kill and then try to snatch it. They often feed on carrion left by wolves, so changes in wolf populations may affect the population of wolverines.[56] They are also known on occasion to eat plant material.[31]

Wolverines often cache their food during times of plenty. This is of particular importance to lactating females in the winter and early spring, a time when food is scarce.[57]

Reproduction

Wolverines are induced ovulators.[58] Successful males will form lifetime relationships with two or three females, which they will visit occasionally, while other males are left without a mate.[59] Mating season is in the summer, but the actual implantation of the embryo (blastocyst) in the uterus is stayed until early winter, delaying the development of the fetus. Females will often not produce young if food is scarce. The gestation period is 30–50 days, and litters of typically two or three young ("kits") are born in the spring. Kits develop rapidly, reaching adult size within the first year. The typical longevity of a wolverine in captivity is around 15 to 17 years, but in the wild the average lifespan is more likely between 8 and 10 years.[60]: 676  Fathers make visits to their offspring until they are weaned at 10 weeks of age; also, once the young are about six months old, some reconnect with their fathers and travel together for a time.[59]

Interspecies interactions

Wolves, American black bears, brown bears, cougars, and golden eagles are capable of killing wolverines, particularly young and inexperienced individuals.[61] Wolves are thought to be the wolverine's most important natural predator, with the arrival of wolves to a wolverine's territory presumably leading the latter to abandon the area.[62] Armed with powerful jaws, sharp claws, and a thick hide,[63] wolverines, like most mustelids, are remarkably strong for their size. They may defend against larger or more numerous predators such as wolves or bears.[64] By far, their most serious predator is the grey wolf, with an extensive record of wolverine fatalities attributed to wolves in both North America and Eurasia.[65][66][67][68] In North America, another predator (less frequent) is the cougar.[69] At least one account reported a wolverine's apparent attempt to steal a kill from a black bear, although the bear won what was ultimately a fatal contest for the wolverine.[70] There are a few accounts of brown bears killing and consuming wolverines as well and, although also reported at times to be chased off prey, in some areas such as Denali National Park, wolverines seemed to try to actively avoid encounters with grizzly bears as they have been reported in areas where wolves start hunting them.[71][72]

Urine scent marking

Wolverines have been observed to use urine as a scent-marking behavior. Headspace analysis of the volatiles emanating from urine samples identified 19 potential semiochemicals. The major classes of identified chemicals are the ketones: 2-heptanone, 4-heptanone and 4-nonanone and the monoterpenes: alpha-pinene, beta-pinene, limonene, linalool and geraniol. In other mammals, the excretion of these terpenes is unusual. The conifer needles that are found in wolverine scat are likely the source of these monoterpenes.[73]

Threats and conservation

The world's total wolverine population is not known. The animal exhibits a low population density and requires a very large home range.[56] The wolverine is listed by the IUCN as Least Concern because of its "wide distribution, remaining large populations, and the unlikelihood that it is in decline at a rate fast enough to trigger even Near Threatened".[2]

The range of a male wolverine can be more than 620 km2 (240 sq mi), encompassing the ranges of several females which have smaller home ranges of roughly 130–260 km2 (50–100 mi2). Adult wolverines try for the most part to keep nonoverlapping ranges with adults of the same sex.[24] Radio tracking suggests an animal can range hundreds of miles in a few months.

Female wolverines burrow into snow in February to create a den, which is used until weaning in mid-May. Areas inhabited nonseasonally by wolverines are thus restricted to zones with late-spring snowmelts. This fact has led to concern that global warming will shrink the ranges of wolverine populations.[59]

This requirement for large territories brings wolverines into conflict with human development, and hunting and trapping further reduce their numbers, causing them to disappear from large parts of their former range; attempts to have them declared an endangered species have met with little success.[56] In February 2013, the United States Fish and Wildlife Service proposed giving Endangered Species Act protections to the wolverine due to its winter habitat in the northern Rockies diminishing. This was as a result of a lawsuit brought by the Center for Biological Diversity and Defenders of Wildlife.[74][75] In November 2023, the United States Fish and Wildlife Service announced that it was adding the wolverine in the United States Lower 48 states to the threatened list.[76]

The Wildlife Conservation Society reported in June 2009 that a wolverine researchers had been tracking for almost three months had crossed into northern Colorado. Society officials had tagged the young male wolverine in Wyoming near Grand Teton National Park, and it had traveled southward for about 500 miles (800 km). It was the first wolverine seen in Colorado since 1919, and its appearance was also confirmed by the Colorado Division of Wildlife.[77] In May 2016 the same wolverine was killed by a cattle ranch-hand in North Dakota, ending a greater-than-800-mile (1,300 km) trip by this lone male wolverine, dubbed M-56. This was the first verified sighting of a Wolverine in North Dakota in 150 years.[78] In February 2014, a wolverine was seen in Utah, the first confirmed sighting in that state in 30 years.[79]

Country Population in surveyed area Surveyed area Year State of population
Sweden 265 [9] Norrbotten[9] 1995–97[9] Stable[9]
Norway 150 [9] Snøhetta plateau and North[9] 1995–97[9] Decline[9]
Norway and Sweden – overall[80] 1065[80] Overall[80] 2012[80] Increase[80]
Finland 155–170[9] Karelia and North[9] 2008[9] Stable[9]
Finland – overall[80] 165–175[80] Overall[80] 2012[80] Increase[80]
Russia 1500[9] European Russia[9] 1970, 1990,[9] Decline[9]
Russia – Komi 885[9] – 1990[9] –
Russia – Archangelsk Oblast 410[9] Nenetsky Autonomous Area[9] 1990[9] Limited[9]
Russia – Kola Peninsula 160[9] Hunting Districts[9] 1990[9] Decline[9]
United States – Alaska[81] Unknown[81] Kobuk Valley National Park,[81] Selawik National Wildlife Refuge[81] 1998[81] Decline[81]
United States – Alaska[82] 3.0 (± 0.4 SE) wolverines/1,000 km2[82] Turnagain Arm and the Kenai Mountains[82] 2004[82] –[82]
United States – Rocky Mountains[83] 28–52[83] Montana, Idaho, Wyoming[83] 1989–2020[83][84] Unknown[83]
United States – California[85] 3[85] Tahoe National Forest[85] 2008[85] Unknown[85]
Canada – Yukon 9.7 (± 0.6 SE) wolverines/1,000 km2[82] Old Crow Flats[82] 2004[82] –[82]
Canada – Ontario[86] Unclear[86] Red Lake – Sioux Lookout to Fort Severn – Peawanuck[86] 2004[86] Stable to expanding[86]
Canada – overall[87] 15,000–19,000[87] Overall[87] –[87] Stable[87]

In captivity

 
Captive at the Kristiansand Zoo, Norway

Around a hundred wolverines are held in zoos across North America and Europe, and they have been bred in captivity, but only with difficulty and high infant mortality.[88]

Human interactions

 
The Wolverine pendant of Les Eyzies, when wolverines were still found in southern France
 
A wolverine in the coat of arms of the Kittilä municipality

Many North American cities, sports teams, and organizations use the wolverine as a mascot. For example, the US state of Michigan is, by tradition, known as "the Wolverine State", and the University of Michigan takes the animal as its mascot. There have also been professional baseball and football clubs called the "Wolverines". The association is well and long established: for example, many Detroiters volunteered to fight during the American Civil War and George Armstrong Custer, who led the Michigan Brigade, called them the "Wolverines". The origins of this association are obscure; it may derive from a busy trade in wolverine furs in Sault Ste. Marie in the 18th century or may recall a disparagement intended to compare early settlers in Michigan with the vicious mammal. Wolverines are, however, extremely rare in Michigan. A sighting in February 2004 near Ubly was the first confirmed sighting in Michigan in 200 years.[89] The animal was found dead in 2010.[90]

The Marvel Comics superhero James "Logan" Howlett was given the nickname "Wolverine" while cage fighting because of his skill, short stature, keen animal senses, ferocity, and most notably, claws that retract from both sets of knuckles.[91][92]

The wolverine is prevalent in stories and oral history from various Algonquian tribes and figures prominently in the mythology of the Innu people of eastern Quebec and Labrador.[93] The wolverine is known as Kuekuatsheu, a conniving trickster who created the world. The story of the formation of the Innu world begins long ago when Kuekuatsheu built a big boat similar to Noah's Ark and put all the various animal species in it. There was a great deal of rain, and the land was flooded. Kuekuatsheu told a mink to dive into the water to retrieve some mud and rocks which he mixed together to create an island, which is the world that is presently inhabited along with all the animals.[94] Many tales of Kuekuatsheu are often humorous and irreverent and include crude references to bodily functions.[95] Some Northeastern tribes, such as the Miꞌkmaq and Passamaquoddy, refer to the wolverine as Lox, who usually appears in tales as a trickster and thief (although generally more dangerous than its Innu counterpart) and is often depicted as a companion to the wolf.[96] Similarly, the Dené, a group of the Athabaskan-speaking natives of northwestern Canada, have many stories of the wolverine as a trickster and cultural transformer much like the coyote in the Navajo tradition or raven in Northwest Coast traditions.[97]

References

  1. ^ "Gulo gulo Linnaeus 1758 (wolverine)-". PBDB.
  2. ^ a b c d Abramov, A.V. (2016). "Gulo gulo". IUCN Red List of Threatened Species. 2016: e.T9561A45198537. doi:10.2305/IUCN.UK.2016-1.RLTS.T9561A45198537.en. Retrieved 11 November 2021.
  3. ^ Andrén, H. 2018. Gulo gulo (errata version published in 2019). The IUCN Red List of Threatened Species 2018: e.T9561A144336120. Accessed on 08 February 2022 at https://www.iucnredlist.org/species/9561/144336120 Archived 23 October 2021 at the Wayback Machine.
  4. ^ Jones, Daniel (2011). Roach, Peter; Setter, Jane; Esling, John (eds.). Cambridge English Pronouncing Dictionary (18th ed.). Cambridge University Press. ISBN 978-0-521-15255-6.
  5. ^ "Vielfraß | Rechtschreibung, Bedeutung, Definition, Herkunft". www.duden.de (in German). Archived from the original on 9 November 2014. Retrieved 7 February 2023.
  6. ^ "The Free Dictionary". The Free Dictionary. Retrieved 4 October 2010.
  7. ^ Koepfli, Klaus-Peter; Deere, KA; Slater, GJ; Begg, C; Begg, K; Grassman, L; Lucherini, M; Veron, G; Wayne, RK (February 2008). "Multigene phylogeny of the Mustelidae: Resolving relationships, tempo and biogeographic history of a mammalian adaptive radiation". BMC Biology. 6: 10. doi:10.1186/1741-7007-6-10. PMC 2276185. PMID 18275614.
  8. ^ a b Tomasik, Eric & Cook, Joseph A. (2005). "Mitochondrial phylogeography and conservation genetics of wolverine (gulo gulo) of Northwestern North America". Journal of Mammalogy. 86 (2): 386–396. CiteSeerX 10.1.1.385.2735. doi:10.1644/BER-121.1. S2CID 14887344.
  9. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab Landa, Arild; Lindén, Mats & Kojola, Ilpo (2000). "Action Plan for the conservation of Wolverines (Gulo gulo) in Europe" (PDF). Nature and environment, No. 115. Convention on the Conservation of European Wildlife and Natural Habitats (Bern Convention). Archived (PDF) from the original on 29 April 2015. Retrieved 25 January 2008.
  10. ^ "Gulo gulo" (PDF). Mammalian Species. The American Society of Mammalogists. 1995. doi:10.1644/0.499.1. S2CID 253916056. Retrieved 16 August 2021.
  11. ^ Burton, Maurice; Burton, Robert (1970). The international wildlife encyclopedia. Marshall Cavendish. pp. 2959–. ISBN 978-0-7614-7266-7. Archived from the original on 31 December 2013. Retrieved 16 September 2011.
  12. ^ "The Northern Wolverine Project" (PDF). Env.gov.bc.ca. Archived from the original (PDF) on 20 August 2021. Retrieved 20 August 2021.
  13. ^ "Gulo gulo — USDA Forest Service". Retrieved 20 August 2021.
  14. ^ Zigouris, J.; Schaefer, J.A.; Fortin, C.; Kyle, C.J. (2013). "Phylogeography and post-glacial recolonization in wolverines (Gulo gulo) from across their circumpolar distribution". PLOS ONE. 8 (12): e83837. Bibcode:2013PLoSO...883837Z. doi:10.1371/journal.pone.0083837. PMC 3875487. PMID 24386287.
  15. ^ "Mammals of the Soviet Union". 1988. Retrieved 16 September 2021.
  16. ^ a b Holbrow, W. C. (1976). The biology, mythology, distribution, and management of the wolverine (Gulo gulo) in western Canada. The University of Manitoba (Masters Thesis).
  17. ^ Krott, P. (1959). Demon of the North. A.A. Knopf, New York. 260pp. (Translated from German).
  18. ^ Weedle, F. (1968). The wolverine: the problems of a wilderness outcast. Defenders of Wildlife News 43: 156–168.
  19. ^ Pulliainen, E. (1968). Breeding biology of the wolverine (Gulo gulo L.) in Finland. In Annales Zoologici Fennici (Vol. 5, No. 4, pp. 338–344). Finnish Zoological and Botanical Publishing Board.
  20. ^ Järvenpää, J., & Norberg, H. (2011). Carnivore Nature Guide. European Agricultural Fund for Rural Development.
  21. ^ Wiig, Ø. (1989). Craniometric variation in Norwegian wolverines Gulo gulo L. Zoological Journal of the Linnean Society, 95(3), 177–204.
  22. ^ Wood, William F.; Terwilliger, Miranda N.; Copeland, Jeffrey P. (2005). "Volatile compounds from anal glands of the wolverine, Gulo gulo". J. Chemical Ecology. 31 (9): 2111–2117. Bibcode:2005JCEco..31.2111W. doi:10.1007/s10886-005-6080-9. PMID 16132215. S2CID 6072649.
  23. ^ Pratt, Philip. "Dentition of the Wolverine". The Wolverine Foundation, Inc. Archived from the original on 27 May 2008. Retrieved 1 July 2007.
  24. ^ a b Taylor, Ken (1994). "Wolverine". Wildlife Notebook Series. Alaska Department of Fish & Game. Archived from the original on 6 December 2006. Retrieved 21 January 2007.
  25. ^ "Wolverine | Size, Habitat, & Facts | Britannica". www.britannica.com. 10 May 2024. Retrieved 12 May 2024.
  26. ^ "The Wolverine Foundation | Wolverine Distribution". The Wolverine Foundation. Retrieved 12 May 2024.
  27. ^ LIU Xu, MA Ming, XU Fujun, XIONG Jiawu, Zhu Shibing, CUI Shaopeng, JIANG Zhigang, ZHANG Tong, GUO Hong, ERBOLAT Tuoliuhan. A preliminary study of wolverine in Altay, Xinjiang[J]. ACTA THERIOLOGICA SINICA, 2018, 38(5): 519-524.
  28. ^ "Wolverine, facts and information". National Geographic. 29 December 2023. Retrieved 12 May 2024.
  29. ^ Marciszak, Adrian; Kovalchuk, Oleksandr (July 2011). "The wolverine Gulo gulo Linnaeus, 1758 from the Late Pleistocene site at Kaniv: a short review of the history of the species in the Ukraine". researchgate.net. Retrieved 5 October 2021.
  30. ^ "Mednieki Matīšu pagastā sastapušies ar neparastu, iepriekš neredzētu dzīvnieku". Jauns.lv. 25 July 2022. Retrieved 25 July 2022.
  31. ^ a b Rickert, Eve (28 June 2007). "The perils of secrecy". High Country News. Archived from the original on 28 September 2007.
  32. ^ Wilson, Spencer (24 August 2023). "Wolverines could be next up for reintroduction in Colorado". CBS News. Retrieved 25 August 2023.
  33. ^ "Extirpated and Rare Species of New York State" (PDF). Esf.edu. Retrieved 4 March 2022.
  34. ^ "Wolverine – Gulo gulo | Wildlife Journal Junior". Nhpbs.org. Retrieved 28 February 2022.
  35. ^ Knudson, Tom (5 April 2008). "Sighting prompts California to expand search for elusive wolverine". Sacramento Bee. Archived from the original on 18 July 2008.
  36. ^ Griffith, Martin (22 March 2009). "A year later, wolverine spotted again in Sierra". San Francisco Chronicle. Archived from the original on 26 April 2009.
  37. ^ Wolverine Sighting on SPI Land near Truckee Archived 6 February 2011 at the Wayback Machine. yubanet.com. 18 March 2009
  38. ^ "Scientists capture rare images of wolverine in Sierra Nevada | U.S. News | US News". Archived from the original on 13 September 2017. Retrieved 12 July 2017.
  39. ^ "Endangered Species – Mountain Prairie Region – WOLVERINE". U.S. Fish & Wildlife Service. 25 August 2014. Archived from the original on 6 July 2017.
  40. ^ Blevins, Jason (7 March 2022). "Colorado Parks and Wildlife is dusting off a plan to reintroduce wolverines". The Colorado Sun. Retrieved 21 March 2022.
  41. ^ Williams, Carter; July 2, KSL com | Updated-; July 1, 2021 at 11:04 a m | Posted-; P.m, 2021 at 6:07. "Rare wolverine sighting in Layton may be same animal spotted in May". www.ksl.com. Retrieved 5 October 2021.{{cite web}}: CS1 maint: numeric names: authors list (link)
  42. ^ Williams, Carter. "'A once-in-a-lifetime experience' Utah biologists catch wolverine 43 years after 1st sighting". www.ksl.com. Retrieved 14 March 2022.
  43. ^ Madani, Doha (15 March 2022). "Rare wolverine captured in Utah is 'once-in-a-lifetime' find for researchers". NBC News. Retrieved 19 March 2022.
  44. ^ "Wolverines Return to Mount Rainier National Park After More Than 100 Years". nps.gov. National Park Service. 20 August 2020. Archived from the original on 24 August 2020. Retrieved 25 August 2020.
  45. ^ Runk, David (25 February 2004). "First Michigan wolverine spotted in 200 years". NBC News. Associated Press. Archived from the original on 1 February 2016. Retrieved 7 February 2023.
  46. ^ Mattson, Kyle (18 January 2016). "No, Michigan's first wolverine in 200 years was not just spotted". mlive. Archived from the original on 1 July 2018. Retrieved 7 February 2023.
  47. ^ Van Dijk, J., Gustavsen, L., Mysterud, A., May, R., Flagstad, Ø., Brøseth, H., ... and Landa, A. (2008). "Diet shift of a facultative scavenger, the wolverine, following recolonization of wolves". Journal of Animal Ecology. 77 (6): 1183–1190. Bibcode:2008JAnEc..77.1183V. doi:10.1111/j.1365-2656.2008.01445.x. PMID 18657209.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  48. ^ Wolverine Gulo gulo Archived 4 June 2012 at the Wayback Machine, eNature.com
  49. ^ Scrafford, Matthew A.; Boyce, Mark S. (2018). "Temporal patterns of wolverine (Gulo gulo luscus) foraging in the boreal forest". Journal of Mammalogy. 99 (3): 693–701. doi:10.1093/jmammal/gyy030.
  50. ^ Bret Weinstein; Liz Ballenger; Matthew Sygo (1999). "Gulo gulo". Animal Diversity Web. University of Michigan Museum of Zoology. Archived from the original on 15 October 2013. Retrieved 7 February 2023.
  51. ^ a b Heptner, V.G. and Sludskii, A.A. (1992). Humans are apparently exempt. Mammals of the Soviet Union. Volume II Part 2 Carnivora: Hyenas and Cats. New Delhi: Amerind Publishing, p. 625
  52. ^ Rockwood, Larry L (2015). Introduction to Population Ecology. Wiley. pp. 273–. ISBN 978-1-118-94755-5. Archived from the original on 5 May 2016.
  53. ^ Petersen, M. R., D. N. Weir, and M. H. Dick. 1991. Birds of the Kilbuck and Ahklun Mountain Region, Alaska. U.S. Department of the Interior, Fish & Wildlife Service, North American Fauna 76, Washington, D.C.
  54. ^ Bjärvall, A. and R. Franzén. 1986. Wolverine killed Golden Eagle. Fauna Och Flora 81:205-206.
  55. ^ "World Wildlife Fund–Sweden: 1st International Symposium on Wolverine Research and Management" (PDF). Archived from the original (PDF) on 20 June 2007. Retrieved 4 March 2022.
  56. ^ a b c Hurowitz, Glenn (5 March 2008). "First wolverine in 30 years spotted in California". Grist. Archived from the original on 11 August 2012. Retrieved 7 February 2023.
    US Forest Service (6 March 2008). "Camera Spots Wolverine in Sierra Nevada". physorg.com. Archived from the original on 12 October 2008. Retrieved 21 February 2010.
  57. ^ "Climate change could melt wolverines' snowy refrigerators". Live Science. 13 July 2012. Archived from the original on 29 July 2015. Retrieved 22 October 2015.
  58. ^ Mead, Rodney A.; Bowles, Mark; Starypan, Greg; Jones, Mike (1 January 1993). "Evidence for pseudopregnancy and induced ovulation in captive wolverines (Gulo gulo)". Zoo Biology. 12 (4): 353–358. doi:10.1002/zoo.1430120405. ISSN 1098-2361.
  59. ^ a b c Raloff, Janet (21 October 2010). "Wolverine: Climate warming threatens comeback". Science News. 178. Society for Science & the Public. Archived from the original on 13 May 2013. Retrieved 31 October 2010.
  60. ^ Copeland, Jeffrey P.; Whitman, Jackson S. (2003). "Wolverine (Gulo gulo)". In Feldhamer, George A.; Thompson, Bruce C.; Chapman, Joseph A. (eds.). Wild Mammals of North America: Biology, Management, and Conservation. Johns Hopkins University Press. pp. 672–681. ISBN 978-0-8018-7416-1.
  61. ^ Hornocker, M.G., Messick, J.P. & Melquist, W.E. 1981. "The wolverine in northwestern Montana". Canadian Journal of Zoology, 59: 1286–1301.
  62. ^ "Gulo gulo – The American Society of Mammalogists" (PDF). smith.edu. Archived from the original (PDF) on 17 June 2012. Retrieved 23 September 2011.
  63. ^ "World Biomes: Wolverine". Blueplanetbiomes.org. Archived from the original on 23 September 2010. Retrieved 4 October 2010.
  64. ^ "Wolverine – Montana Fish, Wildlife & Parks". Montana Outdoors. Archived from the original on 28 September 2013.
  65. ^ Burkholder, B. L. (1962). "Observations concerning wolverine". Journal of Mammalogy. 43 (2): 263–264. doi:10.2307/1377101. JSTOR 1377101.
  66. ^ Boles, B. K. (1977). Predation by wolves on wolverines. Canadian Field-Naturalist, 91(1), 68–69.
  67. ^ Palomares, F.; Caro, T. M. (1999). "Interspecific killing among mammalian carnivores" (PDF). The American Naturalist. 153 (5): 492–508. doi:10.1086/303189. hdl:10261/51387. PMID 29578790. S2CID 4343007.
  68. ^ White, K. S., Golden, H. N., Hundertmark, K. J., & Lee, G. R. (2002). Predation by Wolves, Canis lupus, on Wolverines, Gulo gulo, and an American Marten, Martes americana, in Alaska. Canadian Field-Naturalist, 116(1), 132–134.
  69. ^ White River National Forest (N.F.), Land and Resource Management Plan: Environmental Impact Statement. 2002. p. 36.
  70. ^ "When Predators Attack (Each Other): Researchers Document First-known Killing of a Wolverine by a Black Bear in Yellowstone" (Press release). Science Daily. 6 May 2003. Archived from the original on 20 February 2007. Retrieved 16 January 2007.
  71. ^ Krebs, John; Lofroth, Eric; Copeland, Jeffrey; Banci, Vivian; Cooley, Dorothy; Golden, Howard; Magoun, Audrey; Mulders, Robert; Shults, Brad (2004). "Synthesis of Survival Rates and Causes of Mortality in North American Wolverines". Journal of Wildlife Management. 68 (3): 493–502. doi:10.2193/0022-541X(2004)068[0493:SOSRAC]2.0.CO;2. JSTOR 3803381. S2CID 85682054.
  72. ^ Murie, A. (2012). The grizzlies of Mount McKinley. University of Washington Press.
  73. ^ Wood, William F.; Copeland, Jeffrey P.; Yates, Richard E.; Horsey, Iman K.; McGreevy, Lynne R. (2009). "Potential semiochemicals in urine from free ranging wolverines (Gulo gulo Pallas, 1780)". Biochemical Systematics and Ecology. 37 (5): 574–578. Bibcode:2009BioSE..37..574W. doi:10.1016/j.bse.2009.09.007.
  74. ^ Barringer, Felicity (2 February 2013). "U.S. Proposes to Protect Wolverines". The New York Times. ISSN 0362-4331. Retrieved 7 February 2023.
  75. ^ "Judge: Climate change imperils wolverines". Union-Bulletin.com. 5 April 2016. Retrieved 7 February 2023.
  76. ^ Grandoni, Dino (29 November 2023). "It's furry, it's fierce — and in much of the U.S., it's now protected". Washington Post. Retrieved 10 December 2023.
  77. ^ "Wolverine confirmed in Colo., the first since 1919". The Atlanta Journal-Constitution. Associated Press. 19 June 2009. Archived from the original on 22 June 2009.
  78. ^ Levin, Sam (13 May 2016). "'Killed this here critter': outrage after US rancher shoots rare wolverine". The Guardian. Archived from the original on 10 June 2016.
  79. ^ Crofts, Natalie (2 July 2014). "Wolverine caught on camera in Utah for 1st time". Archived from the original on 14 July 2014.
  80. ^ a b c d e f g h i j "Conservation status of large carnivores". Environment > Nature and Biodiversity. European Commission. 10 May 2016. Archived from the original on 13 January 2017. Retrieved 12 December 2016.
  81. ^ a b c d e f Shults, Brad; Peltola, Gene; Belant, Jerrold & Kunkel, Kyran (1998). "population ecology of wolverines within Kobuk valley national park and Selawik national wildlife refuge". Rocky Mountain Research Station, US Department of Agriculture – Forest Service. Archived from the original on 18 December 2010. Retrieved 26 January 2008.
  82. ^ a b c d e f g h i Golden, Howard N.; Henry, J. David; Becker, Earl F.; Goldstein, Michael I.; Morton, John M.; Frost, Dennis; Poe, Aaron J. (2007). "Estimating wolverine Gulo gulo population size using quadrat sampling of tracks in snow". Wildlife Biology. 13 (sp2): 52. doi:10.2981/0909-6396(2007)13[52:EWGGPS]2.0.CO;2. S2CID 54021734.
  83. ^ a b c d e Schwartz, Michael K.; Copeland, Jeffrey P.; Anderson, Neil J.; Squires, John R.; Inman, Robert M.; McKelvey, Kevin S.; Pilgrim, Kristy L.; Waits, Lisette P. & Cushman, Samuel A. (2010). "Wolverine gene flow across a narrow climatic niche" (PDF). Ecology. 90 (11). Ecological Society of America: 3222–32. doi:10.1890/08-1287.1. PMID 19967877. Archived (PDF) from the original on 29 June 2011. Retrieved 14 October 2010.
  84. ^ "Wolverine Spotted in Yellowstone". Cowboy State Daily. 13 January 2021. Retrieved 14 January 2021.
  85. ^ a b c d e "Wolverines in California – California Department of Fish and Game". Dfg.ca.gov. Archived from the original on 18 January 2015. Retrieved 15 September 2012.
  86. ^ a b c d e Magoun, Audrey; Dawson, Neil; Lipsett-Moore, Geoff; Ray, Justina C. (2004). "Boreal Wolverine: A Focal Species for Land Use planning in Ontario's Northern Boreal Forest – Project Report" (PDF). The Wolverine Foundation, Inc., Ontario Ministry of Natural Resources, Ontario Parks, Wildlife Conservation Society (WCS)/University of Toronto. Archived from the original (PDF) on 4 November 2010. Retrieved 26 January 2008.
  87. ^ a b c d e Slough, Brian; et al. (May 2003). "COSEWIC Assessment and Update Status Report on the Wolverine (Gulo gulo) – Eastern Population Western Population in Canada" (PDF). COSEWIC (committee on the status of endangered wildlife in Canada) 2003. COSEWIC assessment and update status report on the wolverine Gulo gulo in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vi 41 pp. Retrieved 26 January 2008.
  88. ^ "Gulo gulo – Wolverine". International Species Identification System. May 2010. Retrieved 9 May 2010.
  89. ^ Runk, David (25 February 2004). "First Michigan wolverine spotted in 200 years". Associated Press. Retrieved 23 December 2008.
  90. ^ Bell, Dawson (15 March 2010). "Only known wolverine in the Michigan wild dies". Detroit Free Press. Archived from the original on 6 July 2015.
  91. ^ "The History of Wolverine". www.marvel.com. Retrieved 16 August 2024.
  92. ^ "Wolverine: In Comics, Full Report". MARVEL. Retrieved 23 September 2024.
  93. ^ Swann, Brian, editor. (2005). Algonquian Spirit: Contemporary Translations of the Algonquian Literatures of North America. Bison Books. ISBN 978-0803293380
  94. ^ Armitage, Peter (1992). "Religious ideology among the Innu of eastern Quebec and Labrador" (PDF). Religiologiques. 6. Archived from the original (PDF) on 1 January 2007. Retrieved 29 June 2007.
  95. ^ Millman, Lawrence. (1993). Wolverine Creates the World: Labrador Indian Tales. Capra Press. ISBN 978-0884963639
  96. ^ Lynch, Patricia Ann and Jeremy Roberts. (2010). Native American Mythology A to Z. Chelsea House Publishers. ISBN 978-1604138948
  97. ^ Moore, Patrick and Angela Wheelock. (1990). Wolverine Myths and Visions: Dene Traditions from Northern Alberta. University of Nebraska Press. ISBN 978-0803281615
Retrieved from "https://en.wikipedia.org/w/index.php?title=Wolverine&oldid=1262111958"