Crocidura lasiura, Dobson, 1890

Russell A. Mittermeier & Don E. Wilson, 2018, Soricidae, Handbook of the Mammals of the World – Volume 8 Insectivores, Sloths and Colugos, Barcelona: Lynx Edicions, pp. 332-551 : 485

publication ID 10.5281/zenodo.6870843


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Crocidura lasiura


256. View Plate 20: Soricidae

Ussuri White-toothed Shrew

Crocidura lasiura View in CoL

French: Crocidure de I'Oussouri / German: Ussuri-WeilRzahnspitzmaus / Spanish: Musarana de Ussuri

Other common names: Ussuri Shrew

Taxonomy. Crocidura lasiura Dobson, 1890 View in CoL ,

“ Manchuria ( Ussuri River, a tributary of the Amur ), Corea ( Fusan ).”

Evidence retrieved from karyotype composition, and mtDNA and nDNA sequences classify C. lasiura to the Crocidura group that inhabits the Japanese islands, Taiwan, Hainan, and southern China. Several sympatric forms easily distinguishable on size are found in the Russian Far East; they are sometimes regarded as separate

species, but until this issue is properly understood, the intraspecific taxonomy of this

species cannot be resolved, although several morphologically similar forms have been described in Korea and southern China. Monotypic.

Distribution. NE & E China, SE Russian Far East, and Korean Peninsula. View Figure

Descriptive notes. Head—body 66-100 mm (immatures 66-83 mm), tail 29-41 mm; weight 8-8-26-7 g (immatures 8-:8-13 g). Pregnant females may weigh up to 26-7 g. Larger sympatric form: head-body 98-111 mm,tail 29-41 mm; weight 40-58 mm. The Ussuri White-toothed Shrew is large and massive. Tail is short, often shorter than 50% of head-body length. Pelage is dark, unicolor. Back is dark brown, belly somewhat lighter; pelage color in juveniles is lighter than in adults. Chromosomal complement has 2n = 40 and FN = 56; seven pairs of metacentric and submetacentric autosomes, twelve pairs of acrocentric autosomes. Xand Ysubmetacentric chromosomes.

Habitat. Found in non-wooded floodplains and waterside habitats; clearings or stream valleys are occupied in forests, whereas coniferous forests with a continuous tree layer are avoided. Agrocenoses are inhabited, to a high abundance in some cases. Both deciduous and mixed forests varying in humidity are inhabited on the Korean Peninsula.

Food and Feeding. Arachnids (especially harvestmen), ground beetles, caterpillars, and bugs prevail in the diet. The diet may include water organisms: common water beetles, snails, gammarids, and fish fry, which the Ussuri White-toothed Shrew catches in water and eats on shore. Feathers of birds and fur of small mammals were found in 12% of the stomachs examined. Earthworms are eaten comparatively rarely.

Breeding. Breeding season lasts from early May to early November; season is so long because one age group (young of the year) takes the place of another (overwintering adults) in the process; overwintering females produce two or three litters, then the young ofthe year are involved in reproduction, both females (83%) and males (80%) reaching maturity. A litter includes 6-11 offspring, averaging 8-7 young. In South Korea,litter size is 4-6 young, and reproduction occurs from February to October.

Activity patterns. Lifestyle is semi-aquatic. Activity is observed around the clock and is multiphasic; activity periods account for 35% of the day and are irregularly distributed between day and night.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Least Concern on The IUCN Red List. The Ussurl White-toothed Shrew is abundant and sometimes dominates in the shrew community on the Korean Peninsula and in southern Primorye. In northern parts of the range, the species is uncommon to rare and is on the regional Red List of Amur Region.

Bibliography. Churchfield et al. (1999), Dubey, Salamin et al. (2008), Jeong Soon-Jeong et al. (2010), Nester enko (1999), Okhotina (1984), Won Chang-Man & Smith (1999), Zaitsev et al. (2014), Zima et al. (1998).














Crocidura lasiura

Russell A. Mittermeier & Don E. Wilson 2018

Crocidura lasiura

Dobson 1890
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