Stripe-backed weasels (mustelids are seldom seen throughout their range and are often misidentified. However, there have been confirmed sightings of the species in the northern regions of India, central Myanmar, southern China, northern Thailand and the central and northern regions of Laos and Vietnam. The southern limit of the species remains unclear. (Abramov, et al., 2008; Streicher, et al., 2010)) are found throughout eastern Asia, with a range extending from the eastern Himalayas into southern China and the northern regions of Southeast Asia. These
Recorded documentation of stripe-backed weasels' habitat preferences is rare. Their habitat preferences may be inferred from the hunting experiences of indigenous people. Descriptions of this species habitat include thick jungle, dense hill jungle, and moderate forest within its Palearctic distribution. Stripe-backed weasels can be found in scrubby regenerating forests throughout their range, but have also been captured in the evergreen forests of Thailand and Vietnam. Stripe-backed weasels are generally described as a montane species. They may prefer relatively high altitudes and have been observed at elevations ranging from 90 meters in northern Myanmar to 2,500 meters in China and India. In China, (Abramov, et al., 2008; Streicher, et al., 2010)has inhabited river valleys at altitudes ranging from 1,200 to 2,200 meters above sea-level. Animals living at low altitudes appear to prefer rugged terrain. The specific habitat needs of this species are uncertain, due to the wide variety of habitats in which it has been sighted.
- Terrestrial Biomes
- Range elevation
- 90 to 2500 m
- 295.28 to 8202.10 ft
Stripe-backed weasels typically have body lengths of 30 to 36 cm. The tail of this mustelid is long, measuring 18 to 20 cm. The body mass of stripe-backed weasels is estimated between 1 to 2 kg. Stripe-backed weasels are largely reddish brown and have a distinctive, thin, cream coloured stripe from their mid-nape, down the center of their back and onto the first third of their tails. This trait is diagnostic and not seen in other carnivores. Stripe-backed weasels' chins and chests are also a yellow cream colour. Their eyes are very black and small and their ear pinnae are well hidden by fur. This species has the typical Mustelid dental formula: I3/3, C1/1, PM3/3, M1/2 = 34. (Abramov, et al., 2008; Streicher, et al., 2010; Tizard, 2002)
- Sexual Dimorphism
- male larger
- Range mass
- 1000 to 2000 g
- 35.24 to 70.48 oz
- Range length
- 300 to 360 mm
- 11.81 to 14.17 in
Little is known about breeding behaviors of stripe-backed weasels. (Johnson, et al., 2000)
- Mating System
It is unknown whether this species has delayed implantation, a reproductive trait that is not uncommon in mustelids.
- Key Reproductive Features
- gonochoric/gonochoristic/dioecious (sexes separate)
Little is known about the parental investment of stripe-backed weasels.
The natural life span of stripe-backed weasels is unknown. The closely related Siberian weasel can live up to 6 years in the wild. (Mayagi, et al., 1983)
- Key Behaviors
Stripe-backed weasels most likely have intra-sexual ranges, in which a male's range is significantly larger than a females and overlaps with conspecifics of the opposite gender. (Johnson, et al., 2000)
Communication and Perception
Stripe-backed weasels scent-mark their home ranges, most likely as an intraspecfic communication mechanism for maintaining territories. (Streicher, et al., 2010)
- Communication Channels
Little is known about their dietary habits. One potential prey species is the bandicoot rat. One study documented a stripe-backed weasel attacking a bandicoot rat by biting and holding onto its nose. Stripe-backed weasels have been observed foraging around dead logs, examining the cracks and crevices, possibly searching for insects, grubs and worms that reside within the logs. Likewise, one record documented a weasel hunting and capturing an unidentified rat near a stream. (Abramov, et al., 2008; Hutton, 1922; Tizard, 2002; Treesucon, 1989)
- Primary Diet
- eats terrestrial vertebrates
- Animal Foods
- Known Predators
- Human (Homo sapiens)
This species has been observed killing rodents in the wild, so it may have some role in controlling rodent populations. The behavior of the closely related Japanese weasel (Mustela sibrica itatsi) suggests that they may be an effective predator of nuisance rats. Due to stripe-backed weasels close relation to Japanese weasels, this may imply they also have some ability to control nuisance rodents. Stripe-backed weasels are also hosts for parasitic nematodes (Skrjabingylus nasicola), which are common in mustelids of the Palearctic region. (Abramov, et al., 2008; Uchida, 1968)
Economic Importance for Humans: Positive
Stripe-backed weasels are trapped and hunted for food and fur by indigenous populations in Asia, although not all indigenous people view the animals as edible. In fact, some groups have described the meat as foul-smelling. Despite being trapped on occasion, the pelts of stripe-backed weasels are of minimal value; only 3,000 to 4,000 documented pelts were harvested per year, in China during the 1970s. (Abramov, et al., 2008; Lau, et al., 2010; Streicher, et al., 2010)
- Positive Impacts
- body parts are source of valuable material
Economic Importance for Humans: Negative
There have been reports of stripe-backed weasels killing domestic chickens, but the validity of these reports is questionable because these animals are often confused with mongooses and other small carnivores. (Abramov, et al., 2008)
This species is widespread, but does not appear to be abundant. It is listed by the IUCN Red List as of "least concern". However, (Abramov, et al., 2008; Duckworth, et al., 2012; Streicher, et al., 2010)is considered an endangered species in China and has protected status in Thailand.
- IUCN Red List
- Least Concern
Reynaud Stewart (author), University of Manitoba, Jane Waterman (editor), University of Manitoba, Leila Siciliano (editor), Michigan State University.
living in the northern part of the Old World. In otherwords, Europe and Asia and northern Africa.
- bilateral symmetry
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
an animal that mainly eats meat
uses smells or other chemicals to communicate
animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.
A substance that provides both nutrients and energy to a living thing.
forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.
having the capacity to move from one place to another.
- native range
the area in which the animal is naturally found, the region in which it is endemic.
having more than one female as a mate at one time
reproduction that includes combining the genetic contribution of two individuals, a male and a female
uses touch to communicate
that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).
Living on the ground.
the region of the earth that surrounds the equator, from 23.5 degrees north to 23.5 degrees south.
Abramov, A., J. Duckworth, Y. Wang, S. Roberton. 2008. The stripe-backed weasel Mammal Review, 38: 247-266.: taxonomy, ecology, distribution and status.
Duckworth, J., . Yonzon, A. Abramov, R. Timmons. 2012. "http://www.iucnredlist.org/details/14027/0." (On-line). Accessed February 05, 2013 at
Glass, B., M. Thies. 1997. A Key To The Skulls Of North American Mammals third edition. United States of America: Bryan P. Glass.
Hutton, J. 1922. The occurrence if the stripe-backed weasel (Journal of Bombay Natural History Society, 28: 795-796.) in the Naga hills.
Johnson, D., D. MacDonald, A. Dickman. 2000. An analysis and review of models of the sociobiology of the Mustelidae. Mammal Review, 30: 171-196.
Mayagi, K., S. Shiraishi, T. Uchida. 1983. Age Determination in the Yellow Weasel Mustela sibirica coreana. Journal of faculty, Agriculture. Kyushu University, 27(3-4): 100-114.
Streicher, U., J. Duckworth, W. Robichaud. 2010. Further Records of Stripe-backed Weasel Tropical Natural History, 10: 199-203.from Lao PDR.
Tizard, R. 2002. Records of Little Known Small Carnivores from Thailand, Lao PDR and southern China. Small Carnivore Conservation, 26: 3.
Treesucon, U. 1989. A sighting of the back-striped weasel (Natural History Bulletin of the Siam Society, 37: 253-254.) in Northern Thailand.
Uchida, T. 1968. Observations on the Efficiency of the Japanese Weasel, Mustela sibirica itatsi Temminck & Schlegel, as a Rat-Control Agent in the Ryukyus. Bulletin of the World Health Organization, 39: 980-986.