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Mustela erminea

(ARMI?O)

Overview

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Mammal. The stoat is an intelligent, versatile predator specialising in small mammals and birds. Fearless in attacking animals larger than itself, and adapted to surviving periodic shortages by storage of surplus kills. Mustela erminea has been used to exterminate pest rodents and rabbits on small islands with few alternative prey (King 1989), but only in certain conditions which are hard to meet. Belief that they could control rabbits was the reason for bringing them to New Zealand, but the islands were too large and alternative prey too abundant. Formerly an important source of white fur (ermine) harvested by trappers in Russia and Canada.

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Chinese:

Bai-you, Sao-xue

Common Names in Dutch:

Hermelijn

Common Names in English:

ermine, Short-tailed weasel, Stoat, Weasel

Common Names in French:

hermine

Common Names in German:

Grosswiesel, Hermelin

Common Names in Russian:

Горностай

Common Names in Spanish:

ARMI?O

Description

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Physical Description

Species Mustela erminea

Brown on back, white on belly, tail with conspicuous black tip . Long, thin body with strong sexual dimorphism - in New Zeland the adult males average 320 g and females 200 g, they are much smaller elsewhere in the world. May be white or partially so in winter in colder areas. Swims and climbs well.

Habitat

Lives anywhere it can find prey , but vulnerable to attack by raptors , so keeps under cover and prefers forest or patches of bush or hedgerows to open pasture. Habitat choices similar in native and introduced ranges .

Typically found at an altitude of 0 to 3,180 meters (0 to 10,433 feet).[1]

Ecology: Ermine (Stoat) occupy a wide range of habitats . They are often found in successional or forest-edge habitats, in scrub , alpine meadows, marshes, riparian woodlands, hedgerows, and riverbanks that have high densities of small mammals, especially Microtus and Arvicola species (King, 1983). Pulliainen (1999) states that coniferous and mixed woodlands are preferred, but that many other habitats are used including tundra and the summits of fells and mountains. Dense forests and deserts are avoided (King, 1983). Specifically to Mongolia, they inhabit taiga, forest-steppe and rocky parts of the semi-desert. This species is a specialist predator of small mammals, but will occasionally feed on fruit, earthworms, insects, eggs , and birds (King, 1983). Its local distribution is typically related to that of small rodents and lagomorphs (King, 1983; Pulliainen, 1999). This species is nocturnal but are often seen in daylight hours. Estimates for home range size range from 4 to 200 hectares for males, most often falling between 10 to 40 hectares (King, 1983).

Its local distribution is typically related to that of small rodents and lagomorphs (King, 1983). They tend to avoid dense forest and deserts, and are often found in successional or forest-edge habitats, in scrub, alpine meadows, marshes, riparian woodlands, hedgerows, and riverbanks that have high densities of small mammals, especially Microtus and Arvicola (King, 1983). Estimates for home range size range from 4 to 200 hectares for males, most often falling between 10 to 40 hectares (King, 1983).[2].

List of Habitats:

Biology

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Reproduction

Placental , with 9-10 month compulsory delay in implantation which divides gestation into two, 2-week periods in different calendar years. Ovulation induced by coitus; ovulation rate averages 8-10 every year, range 1-18, but litter size cut down by progressive intra-uterine mortality when food scarce, to zero in extreme conditions (King et al 2003). Stoats of both sexes must survive to about 14 months old to leave surviving offspring.

Females have extreme juvenile precocity, mated as nestlings but do not produce the young until following season . Males mature at 10-11 months. Limited to a single litter a year, but in optimal conditions it can be large (10-13 young born). Average life span

Taxonomy

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Notes

Name Status: Accepted Name .

Last scrutiny: 15-Aug-2007

Similar Species

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Members of the genus Mustela

ZipcodeZoo has pages for 41 species and subspecies in this genus:

M. africana (Tropical Weasel) · M. altaica (Altai Weasel) · M. erminea (Short-Tailed Weasel) · M. erminea anguinae (Vancouver Island Ermine) · M. erminea celenda (Prince of Wales Island Ermine) · M. erminea erminea (Short-Tailed Weasel) · M. erminea haidarum (Queen Charlotte Islands Ermine) · M. erminea kadiacensis (Ermine) · M. erminea seclusa (Ermine) · M. eversmanii (Steppe Polecat) · M. eversmannii (Steppe Polecat) · M. felipei (Colombian Weasel) · M. felipeide la (Colombian Weasel) · M. frenata (Long-Tailed Weasel) · M. frenata altifrontalis (Washington Long-Tailed Weasel) · M. frenata frenata (Long-Tailed Weasel) · M. frenata latriostra (Long-Tailed Weasel) · M. frenata longicauda (Prairie Long-Tailed Weasel) · M. frenata olivacea (Southeastern Weasel) · M. frenata peninsulae (Long-Tailed Florida Weasel) · M. frenata primulina (Long-Tailed Weasel) · M. itatsi (Japanese Weasel) · M. kathiah (Yellow-Bellied Weasel) · M. kathiah kathiah (Yellow-Bellied Weasel) · M. lutreola (Mink) · M. lutreolina (Indonesian Mountain Weasel) · M. macrodon (And Polecats) · M. nigripes (Black-Footed Ferret) · M. nivalis (Least Weasel) · M. nudipes (Malay Weasel) · M. putorius (European Ferret) · M. putorius furo (Domestic Ferret) · M. sibirica (Siberian Weasel) · M. sibirica sibirica (Siberian Weasel) · M. strigidorsa (Stripe-Backed Weasel) · M. subpalmata (Egyptian Weasel) · M. vison (American Mink) · M. vison halilimnetes (Gulf Salt Marsh Mink) · M. vison lutensis (Florida Mink) · M. vison macrodon (Sea Mink) · M. vulgaris (Black Spotted Smooth Hound)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 12, 2007:

Identifiers

Footnotes

  1. Mean = 210.200 meters (689.633 feet), Standard Deviation = 349.250 based on 9,463 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
  2. Reid, F. & Helgen, K. 2008. Mustela erminea. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 02 February 2012. [back]
Last Revised: 7/14/2012