Least weasel














































Least weasel
Temporal range: Late Pleistocene–Recent


Mustela nivalis -British Wildlife Centre-4.jpg
Least weasel at the British Wildlife Centre, Surrey, England

Conservation status




Least Concern (IUCN 3.1)[1]


Scientific classification edit
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
Carnivora
Family:
Mustelidae
Genus:
Mustela
Species:
M. nivalis

Binomial name

Mustela nivalis

Linnaeus, 1766


Least Weasel area.png
Global range of M. nivalis

The least weasel (Mustela nivalis), common weasel, or simply weasel in the UK[2] and much of the world, is the smallest member of the genus Mustela, family Mustelidae and order Carnivora.[3][4] It is native to Eurasia, North America and North Africa, and has been introduced to New Zealand, Australia, Malta, Crete, Bermuda, Madeira Island, the Azores, the Canary Islands, São Tomé, the Falkland Islands, Argentina and Chile.[5] It is classified as least concern by the IUCN, due to its wide distribution and large population throughout the Northern Hemisphere.


Least weasels from various parts of its range vary greatly in size. The body is slender and elongated, the legs and tail are relatively short. The colour varies geographically, as does the pelage type and length of tail. The dorsal surface, flanks, limbs and tail of the animal are usually some shade of brown while the underparts are white. The line delineating the boundary between the two colours is usually straight. At high altitudes and in the northern part of its range, the coat becomes pure white in winter. Eighteen subspecies are recognised.


Small rodents form the largest part of the least weasel's diet, but it also kills and eats rabbits, other mammals, and occasionally birds, birds' eggs, fish and frogs. Males mark their territories with olfactory signals and have exclusive home ranges which may intersect with or include several female ranges. Least weasels use pre-existing holes to sleep, store food and raise their young. Breeding takes place in the spring and summer, and there is a single litter of about six kits which are reared exclusively by the female. Due to its small size and fierce nature, the least weasel plays an important part in the mythology and legend of various cultures.




Contents






  • 1 Taxonomy and evolution


    • 1.1 Subspecies




  • 2 Description


  • 3 Behaviour and ecology


    • 3.1 Reproduction and development


    • 3.2 Territorial and social behaviours


    • 3.3 Diet


    • 3.4 Predators and competitors


    • 3.5 Diseases and parasites




  • 4 Distribution and habitat


  • 5 Conservation status


  • 6 In folklore and mythology


  • 7 References


    • 7.1 Bibliography




  • 8 Further reading


  • 9 External links





Taxonomy and evolution


The least weasel was given its scientific name Mustela nivalis by Carl Linnaeus in his 12th edition of Systema Naturae in 1766. The type locality was Västerbotten in Sweden. As an animal with a very wide distribution, the morphology of the least weasel varies geographically. The species was reviewed by Reichstein in 1957 and again by van Zyll de Jong in 1992 and Reig in 1997. Youngman (1982) placed it in the subgenus Mustela while Abramov (1999) considered it should be included in the subgenus Gale. Based on skull characteristics, Reig (1997) proposed that the taxon should be split into four species, M. subpalmata, M. rixosa, M. vulgaris and M. eskimo. Abrimov and Baryshinikov (2000) disagreed, recognising only M. subpalmata as a separate species.[6]


Within the genus Mustela, the least weasel is a relatively unspecialised form, as evidenced by its pedomorphic skull, which occurs even in large subspecies.[7] Its direct ancestor was Mustela praenivalis, which lived in Europe during the Middle Pleistocene and Villafranchian. M. praenivalis itself was probably preceded by M. pliocaenica of the Pliocene. The modern species probably arose during the Late Pleistocene.[8] The least weasel is the product of a process begun 5–7 million years ago, when northern forests were replaced by open grassland, thus prompting an explosive evolution of small, burrowing rodents. The weasel's ancestors were larger than the current form, and underwent a reduction in size to exploit the new food source. The least weasel thrived during the Ice Age, as its small size and long body allowed it to easily operate beneath snow, as well as hunt in burrows. It probably crossed to North America through the Bering land bridge 200,000 years ago.[9]



Subspecies




Various least weasel subspecies;
(from left to right)
M. n. pygmaea,
M. n. nivalis,
M. n. pallida,
M. n. vulgaris,
M. n. boccamela,
M. n. heptneri.


The least weasel has a high geographic variation, a fact which has historically led to numerous disagreements among biologists studying its systematics. Least weasel subspecies are divided into 3 categories:[10]



  • The pygmaea–rixosa group (small weasels): Tiny weasels with short tails, pedomorphic skulls, and pelts that turn pure white in winter. They inhabit northern European Russia, Siberia, the Russian Far East, Finland, northern Scandinavian Peninsula, Mongolia, northeastern China, Japan and North America.[10]

  • The boccamela group (large weasels): Very large weasels with large skulls, relatively long tails and lighter coloured pelts. Locally, they either do not turn white or only partially change colour in winter. They inhabit Transcaucasia, from western Kazakhstan to Semirechye and in the flat deserts of Middle Asia. They are also found in Morocco, Algeria, and Tunisia.[10]

  • The nivalis group (average weasels): Medium-sized weasels, with tails of moderate length, representing a transitional form between the former two groups. They inhabit the middle and southern regions of European Russia, Crimea, Ciscaucasus, western Kazakhstan, southern and middle Urals and montane parts of Middle Asia, save for Koppet Dag.[10]














































































































Description




Weasel at the British Wildlife Centre




Skulls of a long-tailed weasel (top), a stoat (bottom left) and least weasel (bottom right), as illustrated in Merriam's Synopsis of the Weasels of North America


The least weasel has a thin, greatly elongated and extremely flexible body with a small, yet elongated, blunt-muzzled head which is no thicker than the neck. The eyes are small in relation to their head size and are bulging and dark colored. The legs and tail are relatively short, the latter constituting less than half the body length. The feet have sharp, dark-coloured claws, and the soles are heavily haired.[21][22] The skull, especially that of the small rixosa group, has an infantile appearance when compared with that of other members of the genus Mustela (in particular, the stoat and kolonok). This is expressed in the relatively large size of the cranium and shortened facial region.[23] The skull is, overall, similar to that of the stoat, but smaller, though the skulls of large male weasels tend to overlap in size with those of small female stoats.[24] There are usually four pairs of nipples but these are only visible in females. The baculum is short, 16 to 20 mm (0.6 to 0.8 in), with a thick, straight shaft. Fat is deposited along the spine, kidneys, gut mesentries and around the limbs. The least weasel has muscular anal glands under the tail, which measure 7 by 5 mm (0.3 by 0.2 in), and contain sulphurous volatiles, including thietanes and dithiacyclopentanes. The smell and chemical composition of these chemicals are distinct from those of the stoat.[24] The least weasel moves by jumping, the distance between the tracks of the fore and hind limbs being 18 to 35 cm (7 to 14 in).[25]




Skeleton, as illustrated in Lydekker's The New Natural History


Dimensions vary geographically, to an extent rarely found among other mammals. Least weasels of the vulgaris group, for example, may outweigh the smaller races by almost four times. In some large subspecies, the male may be 1.5 times longer than the female. Variations in tail length are also variable, constituting from 13–30% of the length of the body. Average body length in males is 130 to 260 mm (5 to 10 in), while females average 114 to 204 mm (4.5 to 8.0 in). The tail measures 12 to 87 mm (0.5 to 3.4 in) in males and 17 to 60 mm (0.7 to 2.4 in) in females. Males weigh 36 to 250 g (1.3 to 8.8 oz), while females weigh 29 to 117 g (1.0 to 4.1 oz).[26]




The winter coat is conspicuous when there is no snow on the ground.


The winter fur is dense, but short and closely fitting. In northern subspecies, the fur is soft and silky, but coarse in southern forms. The summer fur is very short, sparser and rougher. The upper parts in the summer fur are dark, but vary geographically from dark-tawny or dark-chocolate to light pale tawny or sandy. The lower parts, including the lower jaw and inner sides of the legs, are white. There is often a brown spot at the corner of the mouth. The dividing line between the dark upper and light lower parts is usually straight but sometimes forms an irregular line. The tail is brown, and sometimes the tip is a little darker but it is never black. In the northern part of its range and at high altitudes, the least weasel changes colour in the winter, the coat becoming pure white and exhibiting a few black hairs in rare circumstances.[23][27]



Behaviour and ecology



Reproduction and development


The least weasel mates in April–July and there is a 34- to 37-day gestation period. In the Northern Hemisphere, the average litter size consists of 6 kits and these reach sexual maturity in 3 to 4 months. Males may mate during their first year of life, though this is usually unsuccessful. They are fecund in February–October, though the early stages of spermatogenesis do occur throughout the winter months. Anestrus in females lasts from September until February.[28]


The female raises its kits without help from the male. They are 1.5 to 4.5 g (0.05 to 0.16 oz) in weight at birth. Newborn kits are born pink, naked, blind and deaf, but gain a white coat of downy fur at the age of 4 days. At 10 days, the margin between the dark upper parts and light under parts becomes visible. The milk teeth erupt at 2 to 3 weeks of age, at which point the young start to eat solid food, though lactation can last 12 weeks. The eyes and ears open at 3 to 4 weeks of age, and by 8 weeks, killing behaviour is developed. The family breaks up after 9 to 12 weeks.[28] There is a single litter each year and least weasels can live for 7 or 8 years.[27]



Territorial and social behaviours




Two least weasels fighting


The least weasel has a typical mustelid territorial pattern, consisting of exclusive male ranges encompassing multiple female ranges. The population density of each territory depends greatly on food supply and reproductive success, thus the social structure and population density of any given territory is unstable and flexible.[29] Like the stoat, the male least weasel extends its range during spring or during food shortages. Its scent marking behaviour is similar to that of the stoat; it uses faeces, urine and anal and dermal gland secretions, the latter two of which are deposited by anal dragging and body rubbing. The least weasel does not dig its own den, but nests in the abandoned burrow of another species such as a mole or rat.[30] The burrow entrance measures about 2.5 cm (0.98 in) across and leads to the nest chamber located up to 15 cm (5.9 in) below ground. The nest chamber (which is used for sleeping, rearing kits and storing food) measures 10 cm (3.9 in) in diameter, and is lined with straw and the skins of the weasel's prey.[31]


The least weasel has four basic vocalisations; a guttural hiss emitted when alarmed, which is interspersed with short screaming barks and shrieks when provoked. When defensive, it emits a shrill wail or squeal. During encounters between males and females or between a mother and kits, the least weasel emits a high-pitched trilling. The least weasel's way of expressing aggression is similar to that of the stoat. Dominant weasels exhibit lunges and shrieks during aggressive encounters, while subdominant weasels will emit submissive squeals.[30]



Diet




Taxidermy exhibit showing a least weasel attacking a European hare, in the Natural History Museum of Genoa


The least weasel feeds predominantly on mouse-like rodents, including mice, hamsters, gerbils and others. It usually does not attack adult hamsters and rats. Frogs, fish, small birds and bird eggs are rarely eaten. It can deal with adult pikas and gerbils, but usually cannot overcome brown rats and sousliks. Exceptional cases are known of least weasels killing prey far larger than themselves, such as capercaillie, hazel hen and hares.[32] In England, a favoured prey item is the field vole (Microtus agrestis). These have fluctuations in population size, and in years of abundance may form up to 54% of the weasel's diet. In years of scarcity, birds form a greater proportion of the diet and female least weasels may fail to breed.[33]


Despite its small size, the least weasel is a fierce hunter, capable of killing a rabbit five to ten times its own weight.[34] Although they are commonly taken, the rabbits are usually young specimens, and become an important food source during the spring, when small rodents are scarce and rabbit kits are plentiful. Male least weasels take a higher proportion of rabbits than females, as well as an overall greater variety of prey. This is linked to the fact that being larger, and having vaster territorial ranges than females, males have more opportunities to hunt a greater diversity of prey.[35]


The least weasel forages undercover, to avoid being seen by foxes and birds of prey. It is adapted for pursuing its prey down tunnels, though it may also bolt prey from a burrow and kill it in the open.[35] The least weasel kills small prey, such as voles, with a bite to the occipital region of the skull[32] or the neck, dislocating the cervical vertebrae. Large prey typically dies of blood loss or circulatory shock.[35] When food is abundant, only a small portion of the prey is eaten, usually the brain. The average daily food intake is 35 g (1 oz), which is equivalent to 30–35% of the animal's body weight.[32]



Predators and competitors




Least weasels driven from a mountain hare carcass by a stoat, as illustrated in Barrett-Hamilton's A History of British Mammals


The least weasel is small enough to be preyed upon by a range of other predators.[36] Least weasel remains have been found in the excrement of red foxes, sables, steppe and forest polecat, stoats, eagle owls and buzzards.[37] The owls most efficient at capturing least weasels are barn, barred, and great horned owls. Other birds of prey threatening to the least weasel include broad-winged and rough-legged buzzards. Some snake species may prey on the least weasel, including the black rat snake and copperhead.[31] Aside from its smaller size, the least weasel is more vulnerable to predation than the stoat because it lacks a black predator deflection mark on the tail.[36]


In areas where the least weasel is sympatric with the stoat, the two species compete with each other for rodent prey. The weasel manages to avoid too much competition by living in more upland areas, feeding on smaller prey and being capable of entering smaller holes. It actively avoids encounters with stoats, though female weasels are less likely to stop foraging in the presence of stoats, perhaps because their smaller size allows them to quickly escape into holes.[38]



Diseases and parasites


Ectoparasites known to infest weasels include the louse Trichodectes mustelae and the mites Demodex and Psoregates mustela. The species may catch fleas from the nests and burrows of its prey. Flea species known to infest weasels include Ctenophthalmus bisoctodentatus and Palaeopsylla m. minor, which they get from moles, P. s. soricis, which they get from shrews, Nosopsyllus fasciatus, which they get from rodents and Dasypsyllus gallinulae which they get from birds.[36]


Helminths known to infest weasels include the trematode Alaria, the nematodes Capillaria, Filaroides and Trichinella and the cestode Taenia.[36] Least weasels are commonly infected with the nematode Skrjabingylus nasicola, adults of which are found in the nasal sinuses and can damage the skull. There is no evidence that this has serious detrimental effects on even heavily infested animals.[39]



Distribution and habitat




Alaskan weasel Mustela n. eskimo


The least weasel has a circumboreal, Holarctic distribution, encompassing much of Europe and North Africa, Asia and parts of northern North America, where it occurs mainly in places where the stoat is not found, and has recently been extirpated from New York. It has been introduced in New Zealand, Malta, Crete, the Azore Islands and also São Tomé off west Africa. It is found throughout Europe and on many islands, including the Azores, Britain (but not Ireland), and all major Mediterranean islands.[40] It also occurs on Honshu and Hokkaido islands in Japan and on Kunashir, Iturup, and Sakhalin Islands in Russia.[1]


The least weasel occupies a similar type of habitat as the stoat but it less often frequents wet places. It can be found in fields, open woodland, bushy or rocky areas, parks and gardens, and at altitudes of up to about 3,000 metres (9,800 ft).[27]



Conservation status


The least weasel has a very wide circumboreal range and a large total population and is therefore listed by the International Union for Conservation of Nature as being of "least concern". Its chosen habitat is in areas of coarse vegetation and in some regions its numbers may be decreasing because of changes in agricultural practices, but altogether its population trend is thought to be steady. It is relatively common in Eurasia but less abundant in North America and is thought to be rare in the southeastern United States. It is subject to considerable variations in numbers in areas where its main rodent prey is liable to large population fluctuations. In years of rodent population booms, the least weasel numbers may rise by up to ten-fold, only to slump again as prey becomes scarce again in the following years.[1]



In folklore and mythology




17th century print of a weasel confronting a basilisk


The Ancient Macedonians believed that to see a least weasel was a good omen. In some districts of Macedon, women who suffered from headaches after having washed their heads in water drawn overnight would assume that a weasel had previously used the water as a mirror, but they would refrain from mentioning the animal's name for fear that it would destroy their clothes. Similarly, a popular superstition in southern Greece had it that the least weasel had previously been a bride, who was transformed into a bitter animal which would destroy the wedding dresses of other brides out of jealousy.[41] According to Pliny the Elder, the least weasel is the only animal capable of killing the basilisk;


To this dreadful monster the effluvium of the weasel is fatal, a thing that has been tried with success, for kings have often desired to see its body when killed; so true is it that it has pleased Nature that there should be nothing without its antidote. The animal is thrown into the hole of the basilisk, which is easily known from the soil around it being infected. The weasel destroys the basilisk by its odour, but dies itself in this struggle of nature against its own self.[42]


The Ojibwe believed that the least weasel could kill the dreaded wendigo giant by rushing up its anus.[43] In Inuit mythology, the least weasel is credited with both great wisdom and courage, and whenever a mythical Inuit hero wished to accomplish a valorous task, he would generally change himself into a least weasel.[44] According to Matthew Hopkins, a witch hunter general during the English Civil War, least weasels were the familiars of witches.[45]



References





  1. ^ abc Tikhonov, A.; Cavallini, P.; Maran, T.; Kranz, A.; Herrero, J.; Giannatos, G.; Stubbe, M.; Conroy, J.; Kryštufek, B.; Abramov, A.; et al. (2008). "Mustela nivalis". IUCN Red List of Threatened Species. Version 2008. International Union for Conservation of Nature. Retrieved 21 March 2009..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  2. ^ Shorter Oxford English dictionary. United Kingdom: Oxford University Press. 2007. p. 3804. ISBN 0-19-920687-2.


  3. ^ Sarah McPherson (29 January 2015). "What's the world's smallest carnivore?". Discover Wildlife. Immediate Media Company. Retrieved 22 December 2017.


  4. ^ Valkenburgh, Blaire Van; Wayne, Robert K. (2010-11-09). "Carnivores". Current Biology. 20 (21): R915–R919. doi:10.1016/j.cub.2010.09.013. ISSN 0960-9822.


  5. ^ LONG JL 2003. Introduced Mammals of the World: Their History, Distribution and Influence (Cabi Publishing) by John L. Long (
    ISBN 9780851997483)


  6. ^ Wilson, Don E.; Reeder, DeeAnn M., eds. (2005). Mammal Species of the World: A Taxonomic and Geographic Reference, Volume 12. JHU Press. pp. 616–617. ISBN 978-0-8018-8221-0.


  7. ^ Heptner & Sludskii 2002, p. 972


  8. ^ Kurtén 1968, pp. 102–103


  9. ^ Macdonald 1992, p. 205


  10. ^ abcd Heptner & Sludskii 2002, pp. 975–978


  11. ^ Heptner & Sludskii 2002, p. 982


  12. ^ Rhoades, Samuel M. (1900). "A New Weasel from Western Pennsylvania". Proceedings of the Academy of Natural Sciences of Philadelphia. 52: 751–754. JSTOR 4062685.


  13. ^ Heptner & Sludskii 2002, p. 980


  14. ^ Swenk, Myron H. (1926). "Notes on Mustela campestris Jackson, and on the American Forms of Least Weasels". Journal of Mammalogy. 7 (4): 313–330. doi:10.2307/1373581. JSTOR 1373581.


  15. ^ Heptner & Sludskii 2002, p. 981


  16. ^ Kuroda, Nagamichi (1921). "On Three New Mammals from Japan". Journal of Mammalogy. 2 (4): 208–211. doi:10.2307/1373554. JSTOR 1373554.


  17. ^ Heptner & Sludskii 2002, p. 984


  18. ^ Heptner & Sludskii 2002, p. 978


  19. ^ Merriam 1896, pp. 14–15


  20. ^ Heptner & Sludskii 2002, p. 983


  21. ^ Fergus, Chuck. "Weasels" (PDF). Pennsylvania Game Commission. Retrieved 8 November 2017.


  22. ^ Heptner & Sludskii 2002, pp. 967–969


  23. ^ ab Heptner & Sludskii 2002, p. 969


  24. ^ ab Harris & Yalden 2008, p. 468


  25. ^ Heptner & Sludskii 2002, p. 991


  26. ^ Heptner & Sludskii 2002, pp. 970–972


  27. ^ abc Konig, Claus (1973). Mammals. Collins & Co. p. 167. ISBN 978-0-00-212080-7.


  28. ^ ab Harris & Yalden 2008, p. 474


  29. ^ Erlinge, S. (1974). "Distribution, Territoriality and Numbers of the Weasel Mustela nivalis in Relation to Prey Abundance". Oikos. 25 (3): 308–314. JSTOR 3543948.


  30. ^ ab Harris & Yalden 2008, pp. 471–472


  31. ^ ab Merritt & Matinko 1987, p. 277


  32. ^ abc Heptner & Sludskii 2002, pp. 987–988


  33. ^ Tapper, Stephen (1979). "The Effect of Fluctuating Vole Numbers (Microtus agrestis) on a Population of Weasels (Mustela nivalis) on Farmland". Animal Ecology. 48 (2): 603–617. JSTOR 4182.


  34. ^ Macdonald 1992, p. 208


  35. ^ abc Harris & Yalden 2008, pp. 472–473


  36. ^ abcd Harris & Yalden 2008, p. 475


  37. ^ Heptner & Sludskii 2002, p. 992


  38. ^ Harris & Yalden 2008, p. 469


  39. ^ King, Carolyn M. (1977). "The effects of the nematode parasite Skrjabingylus nasicola on British weasels (Mustela nivalis)". Journal of Zoology. 182 (2): 225–249. doi:10.1111/j.1469-7998.1977.tb04157.x.


  40. ^ Rodrigues, M.; et al. (2016). "Origin and introduction history of the Least Weasels (Mustela nivalis) on Mediterranean and Atlantic islands inferred from genetic data". Biological Invasions. 19: 399–421. doi:10.1007/s10530-016-1287-y.


  41. ^ Abbott, G. A. (1903), Macedonian Folklore, pp. 108–109, Cambridge University Press


  42. ^ Pliny the Elder (1855). John Bostock; Henry Thomas Riley, eds. "The Natural History". Retrieved 10 June 2009.


  43. ^ Barnouw, Victor (1979) Wisconsin Chippewa Myths & Tales: And Their Relation to Chippewa Life, pp. 53, University of Wisconsin Press,
    ISBN 0-299-07314-9


  44. ^ Dufresne, Frank (2005), Alaska's Animals and Fishes, pp. 109, Kessinger Publishing,
    ISBN 1-4179-8416-3


  45. ^ Summers, Montague (2005) Geography of Witchcraft, pp. 29, Kessinger Publishing,
    ISBN 0-7661-4536-0




Bibliography




  • Harris, Stephen; Yalden, Derek (2008). Mammals of the British Isles (4th Revised ed.). Mammal Society. ISBN 0-906282-65-9.


  • Kurtén, Björn (1968). "Pleistocene mammals of Europe". Weidenfeld and Nicolson.


  • Heptner, V. G.; Sludskii, A. A. (2002). Mammals of the Soviet Union. Vol. II, part 1b, Carnivores (Mustelidae and Procyonidae). Washington, D.C. : Smithsonian Institution Libraries and National Science Foundation. ISBN 90-04-08876-8.


  • Macdonald, David (1992). "The Velvet Claw: A Natural History of the Carnivores". New York: Parkwest. ISBN 0-563-20844-9.


  • Merriam, Clinton Hart (1896). Synopsis of the weasels of North America. Washington : Govt. Print. Off.


  • Merritt, Joseph F.; Matinko, Ruth Anne (1987). Guide to the mammals of Pennsylvania. University of Pittsburgh Press. ISBN 0-8229-5393-5.



Further reading




  • Coues, Elliott (1877). "Fur-bearing Animals: A Monograph of North American Mustelidae". Government Printing Office.


  • Johnston, Harry Hamilton (1903). British mammals; an attempt to describe and illustrate the mammalian fauna of the British islands from the commencement of the Pleistocene period down to the present day. London, Hutchinson.


  • Kurtén, Björn (1980). "Pleistocene mammals of North America". Columbia University Press. ISBN 0-231-03733-3.



External links




  • Media related to Mustela nivalis at Wikimedia Commons


  • Data related to Mustela nivalis at Wikispecies

  • Smithsonian Institution – North American Mammals: Mustela nivalis











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Vorschmack

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Vorschmack Ukrainian Jewish-style vorschmack served on rye bread Course Hors d'oeuvre Region or state Eastern Europe Associated national cuisine Ashkenazi Jewish, Finnish, German, Ukrainian, Polish, Russian Main ingredients Ground meat and/or fish Cookbook: Vorschmack   Media: Vorschmack Vorschmack or forshmak (Yiddish: פֿאָרשמאַק ‎, from archaic German Vorschmack , "foretaste" [1] or "appetizer" [2] ) is an originally East European dish made of salty minced fish or meat. Different variants of this dish are especially common in Ashkenazi Jewish and Finnish cuisine. Some varieties are also known in Russian and Polish cuisine. Contents 1 In Jewish cuisine 2 In Russian cuisine 3 In Polish cuisine 4 In Finnish cuisine 5 See also 6 References In Jewish cuisine According to Gil Marks, the German name points to the possible Germanic origin of this dish. [1] William Pokhlyobkin descr...
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Quarantine

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For other uses, see Quarantine (disambiguation). Signal flag "Lima" called the "Yellow Jack" which when flown in harbor means ship is under quarantine. A simple yellow flag (also called the "Yellow Jack") had historically been used to signal quarantine (it stands for Q among signal flags), but now indicates the opposite, as a signal of a ship free of disease that requests boarding and inspection. A quarantine is used to separate and restrict the movement of people; it is 'a restraint upon the activities or communication of persons or the transport of goods designed to prevent the spread of disease or pests', for a certain period of time. [1] This is often used in connection to disease and illness, such as those who may possibly have been exposed to a communicable disease. [2] The term is often erroneously used to mean medical isolation, which is "to separate ill persons who have a communicable disease from those who are healthy...
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