Japanese water shrew | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Eulipotyphla |
Family: | Soricidae |
Genus: | Chimarrogale |
Species: | C. platycephalus |
Binomial name | |
Chimarrogale platycephalus Temminck, 1842 | |
Japanese water shrew range |
The Japanese water shrew (Chimarrogale platycephalus), also called the flat-headed water shrew, is a species of mammal in the family Soricidae. It is endemic to Japanese Islands, Honshu and Kyushu. They are considered extinct in Shikoku. [2]
The Japanese water shrew grows to a length of about 11 to 14 cm (4 to 6 in) long with a tail length of 8 to 12 cm (3 to 5 in) and weight of 25 to 63 grams (0.88 to 2.22 oz). The dense short fur on the head, back and sides is greyish-black. The underparts are dirty white and are sharply demarcated from the dorsal surface. Sometimes they are tinged with rusty brown or occasionally are entirely dark grey. There is a white spot just behind the eye and often another near the small, rounded ear which is nearly hidden in the fur. The nose is black and the snout long and tapering.
The Japanese water shrew inhabits mountain streams, small rivers and ponds, preying on benthic organisms, such as aquatic insects, crabs, shrimp, and small fish. [2]
The family Talpidae includes the moles who are small insectivorous mammals of the order Eulipotyphla. Talpids are all digging animals to various degrees: moles are completely subterranean animals; shrew moles and shrew-like moles somewhat less so; and desmans, while basically aquatic, excavate dry sleeping chambers; whilst the quite unique star-nosed mole is equally adept in the water and underground. Talpids are found across the Northern Hemisphere of Eurasia and North America, and range as far south as the montane regions of tropical Southeast Asia.
The Etruscan shrew, also known as the Etruscan pygmy shrew or the white-toothed pygmy shrew, is the smallest known extant mammal by mass, weighing only about 1.8 g (0.063 oz) on average.
The red-toothed shrews of the subfamily Soricinae are one of three living subfamilies of shrews, along with Crocidurinae and Myosoricinae. In addition, the family contains the extinct subfamilies Limnoecinae, Crocidosoricinae, Allosoricinae and Heterosoricinae. These species are typically found in North America, northern South America, Europe and northern Asia. The enamel of the tips of their teeth is reddish due to iron pigment. The iron deposits serve to harden the enamel and are concentrated in those parts of the teeth most subject to wear.
The marsh shrew, also known as the Pacific water shrew, Bendire's water shrew, Bendire's shrew and Jesus shrew is the largest North American member of the genus Sorex. Primarily covered in dark-brown fur, it is found near aquatic habitats along the Pacific coast from southern British Columbia to northern California. With air trapped in its fur for buoyancy, marsh shrews can run for three to five seconds on top of the water. It measures about 16 cm (6.3 in) in length, including a 7-centimetre (2.8 in)-long tail, and weighs an average of 14.5–16 g (0.51–0.56 oz). The marsh shrew's diet consists mainly of invertebrates, which it hunts on land and in the water. They are rare; their populations are thought to be in decline, and they are considered endangered in parts of their range.
The Eurasian water shrew, known in the United Kingdom as the water shrew, is a relatively large shrew, up to 10 cm (4 in) long, with a tail up to three-quarters as long again. It has short, dark fur, often with a few white tufts, a white belly, and a few stiff hairs around the feet and tail. It lives close to fresh water, hunting aquatic prey in the water and nearby. Its fur traps bubbles of air in the water which greatly aids its buoyancy, but requires it to anchor itself to remain underwater for more than the briefest of dives.
The Malayan water shrew, also known as the hantu water shrew, is a red-toothed shrew recorded only from the Malaysian state of Selangor. It was listed as a critically endangered, but is now considered near threatened.
The Sumatran water shrew is a red-toothed shrew found only in the Padang highlands of western Sumatra, Indonesia. Its natural habitats are streams in montane forests. The species is only known from a holotype, which is damaged, and was previously listed as critically endangered by IUCN. It is believed to be severely threatened by habitat loss.
The flat-headed kusimanse is a mongoose species endemic to West African rainforests. It is listed as Least Concern on the IUCN Red List since 2008.
Laxmann's shrew, or the masked shrew, is a species of shrew. Its range extends from northern Scandinavia and the Baltic to the Sea of Japan, including Hokkaidō, Sakhalin, and the Korean Peninsula. It favours mountain forests but is sometimes found in tundra and moorland, and also in lowland areas as well. It avoids cultivated land.
The Asiatic water shrews are the members of the genus Chimarrogale. They are mammals in the subfamily Soricinae of the family Soricidae. They are aquatic, with some species inhabiting streams. The genus contains the following species:
The Bornean water shrew is a species of mammal in the family Soricidae. It is endemic to Malaysia. Its natural habitat is rivers.
Horsfield's shrew is a species of mammal in the family Soricidae found in Cambodia, China, India, Japan, Laos, Nepal, Bhutan, Sri Lanka, Taiwan, Thailand, and Vietnam.
The bicolored shrew or bicoloured white-toothed shrew is a species of mammal in the family Soricidae. It is found in eastern, central and southern Europe and in western Asia. It is a nocturnal species and feeds on insects and other small creatures. Several litters of young are born during the warmer months of the year in a nest of dry grasses in a concealed location.
Whitaker's shrew is a species of mammal in the family Soricidae. It is found in Western Sahara, Algeria, Morocco, Tunisia. Its natural habitats are subtropical or tropical dry shrubland, rocky and sandy coasts. It is a fairly common species and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".
The Merida small-eared shrew is a species of shrew that is endemic to Venezuela.
Kelaart's long-clawed shrew is a species of mammal in the family Soricidae. It is the only species within the genus Feroculus. It is endemic to Sri Lanka and southern India. Its natural habitats are subtropical or tropical dry forests and grassland, and swamps. It is threatened by habitat loss. The species is named for zoologist Edward Frederick Kelaart.
The Arizona shrew is a species of shrew native to North America.
The Asian highland shrew is a species of mammal in the family Soricidae. It is found in India and Sri Lanka. Its habitat is subtropical or tropical dry forests.
True's shrew mole is a species of mammal in the family Talpidae. It is endemic to Japan and is a common species above 1000 meters in grassland, shrubland and forest. Sometimes this species is called the lesser Japanese shrew mole and another species, Urotrichus talpoides, is called the "greater Japanese shrew mole".