Back-striped weasel

The back-striped weasel (Mustela strigidorsa), also called the stripe-backed weasel, is a weasel widely distributed in Southeastern Asia. It is listed as Least Concern on the IUCN Red List in view of its presumed large population, occurrence in a number of protected areas, apparent tolerance to some degree of habitat modification and hunting pressure.[1]

Back-striped weasel
Mustela strigidorsa
A 19th century illustration of Mustela strigidorsa
Scientific classification
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Genus:
Species:
M. strigidorsa
Binomial name
Mustela strigidorsa[2]
Gray, 1853
Back-striped Weasel area
Back-striped weasel range

Characteristics

The back-striped weasel is distinguished from all other Mustela species by the presence of a narrow, silvery dorsal streak extending from the occiput almost to the root of the tail, with a corresponding yellowish ventral streak from the chest along the abdomen. The general colour of the dorsal surface varies from deep to paler chocolate brown, sometimes a little paler on the head and usually slightly darkened along the side of the dorsal streak. The tail and limbs are of the same hue as the back. The upper lip from the rhinarium, the chin and the throat up to the level of the ears are pale varying from whitish to ochreous. On the hind throat and fore chest, the pale hue gradually narrows in extent, and is quite narrow between the forelegs, where it passes into the ventral streak, which expands on the inguinal region between thighs. The pads of the feet are well developed, the plantar ads being four-lobed, with the area around them entirely naked.[3]

The bushy tail is rather long, being more than half the length of the head and body. The length of head and body of males is 30–36 cm (12–14 in), while the tail length is 18–20 cm (7.1–7.9 in).[4] A live-captured juvenile male was estimated to weigh only 700 g (1.5 lb).[5]

Distribution and habitat

The occurrence of the stripe-backed weasel has been confirmed from scattered localities in and around northeastern India, northern and central Myanmar, southern China, northern Thailand, northern and central Laos and Vietnam at an altitude range from sea level to 2,500 m (8,200 ft).[4] In India, it has been recorded from Dampa in 1994, and in Namdapha National Park.[6]

Ecology and behavior

Little has been recorded of this weasel's habitats and habits. It has been found in a wide variety of habitats, and it is not yet possible to define its habitat needs. Specimens collected came from dense hill jungle, hill evergreen forest, disturbed evergreen forest, lower montane evergreen forest and lowland evergreen forest. Most field sightings were in daylight.[4]

In the Naga Hills, one was seen fighting with a large bandicoot rat.[3]

References

  1. ^ a b Roberton, S.; Duckworth, J. W.; Timmins, R.J.; Abramov, A.; Chutipong, W.; Choudhury, A.; Willcox, D.H.A. & Dinets, V. (2008). "Mustela strigidorsa". IUCN Red List of Threatened Species. Version 2016.2. International Union for Conservation of Nature.
  2. ^ Grubb, P. (2005). Wilson, D.E.; Reeder, D.M., eds. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494.
  3. ^ a b Pocock, R. I. (1941). The Fauna of British India, including Ceylon and Burma. Mammalia Vol. II. Carnivora (suborders Aeluroidae (part) and Arctoidae). Taylor and Francis, Ltd., London.
  4. ^ a b c Abramov, A. V., Duckworth, J. W., Wang, Y. and Roberton, S. I. (2008). The stripe-backed weasel Mustela strigidorsa: taxonomy, ecology, distribution and status. Mammal Review 48: 247–266.
  5. ^ Grassman, L. I., Kreetiyutanont, K. and Tewes, M. E. (2002). The Back-striped weasel Mustela strigidorsa Gray, 1853 in northeastern Thailand. Small Carnivore Conservation 26: 2.
  6. ^ Datta, A. (1999). Small Carnivores in two Protected Areas of Arunachal Pradesh. Journal of the Bombay Natural History Society 96: 399–404.
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Bornean ferret-badger (Melogale everetti)

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Four of the species have long been established:

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List of species native to Thailand

The wildlife of Thailand includes its flora and fauna and their natural habitats.

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Mustelidae

The Mustelidae (; from Latin mustela, weasel) are a family of carnivorous mammals, including weasels, badgers, otters, ferrets, martens, mink, and wolverines, among others. Mustelids are diverse and the largest family in the order Carnivora, suborder Caniformia. Mustelidae comprises about 56-60 species across eight subfamilies.

Mustelinae

Mustelinae is a subfamily of family Mustelidae, which includes weasels, ferrets amd minks.It was formerly defined in a paraphyletic manner to also include wolverines, martens, and many other mustelids, to the exclusion of the otters (Lutrinae).

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Native to East Asia, the raccoon dog has been intensively bred for fur in Europe and especially in Russia during the twentieth century. Specimens have escaped or have been introduced to increase production and formed populations in Eastern Europe. It is currently expanding rapidly in the rest of Europe, where its presence is undesirable because it is considered to be a harmful and invasive species.

Paradoxurus

Paradoxurus is a genus within the viverrid family that was denominated and first described by Frédéric Cuvier in 1822. As of 2005, this genus was defined as comprising three species native to Southeast Asia:

the Asian palm civet (P. hermaphroditus)

the golden palm civet (P. zeylonensis)

the brown palm civet (P. jerdoni)In 2009, it was proposed to also include the golden wet-zone palm civet (P. aureus), the Sri Lankan brown palm civet (P. montanus) and the golden dry-zone palm civet (P. stenocephalus), which are endemic to Sri Lanka.

Pusa

Pusa is a genus of the earless seals, within the family Phocidae. The three species of this genus were split from the genus Phoca, and some sources still give Phoca as an acceptable synonym for Pusa.

The three species in this genus are found in Arctic and subarctic regions, as well as around the Caspian Sea. This includes these countries and regions: Russia, Scandinavia, Britain, Greenland, Canada, the United States, Iran, Azerbaijan, Kazakhstan, and Japan. Due to changing local environmental conditions, the ringed seals found in the Canadian region has varied patterns of growth. The northern Canadian ringed seals grow slowly to a larger size, while the southern seals grow quickly to a smaller size.

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Speothos

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Weasel

A weasel is a mammal of the genus Mustela of the family Mustelidae. The genus Mustela includes the least weasels, polecats, stoats, ferrets and minks. Members of this genus are small, active predators, with long and slender bodies and short legs. The family Mustelidae (which also includes badgers, otters, and wolverines) is often referred to as the "weasel family". In the UK, the term "weasel" usually refers to the smallest species, the least weasel (M. nivalis).Weasels vary in length from 173 to 217 mm (6.8 to 8.5 in), females being smaller than the males, and usually have red or brown upper coats and white bellies; some populations of some species moult to a wholly white coat in winter. They have long, slender bodies, which enable them to follow their prey into burrows. Their tails may be from 34 to 52 mm (1.3 to 2.0 in) long.Weasels feed on small mammals and have from time to time been considered vermin because some species took poultry from farms or rabbits from commercial warrens. They do, on the other hand, eat large numbers of rodents. They can be found all across the world except for Antarctica, Australia, and neighbouring islands.

Extant Carnivora species

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