Laxmann's shrew (Sorex caecutiens), or the masked shrew,[2] is a species of shrew.[1] 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.
This shrew was first described in 1788 by the Finnish-Swedish explorer and naturalist Erik Laxmann, who called it Sorex caecutiens, and it is commonly known as Laxmann's shrew. The type locality is to the southwest of Lake Baikal in Russia. Several subspecies are recognised, including S. c. hallamontanus from Jeju Island in South Korea.[3]
Description
An adult Laxmann's shrew has a weight of 3 to 11 g (0.1 to 0.4 oz) and a head-and-body length of 4.8 to 7.8 cm (1.9 to 3.1 in), with a tail of 3.9 to 5.2 cm (1.5 to 2.0 in).[4] The snout is long and narrow and lacks a pale coloured streak at the side. The teeth have red tips, and the dentition distinguishes this shrew from other similar species. The fur is shiny, the pelage is bicoloured, and the feet are white. The tail is always more than half the head-and-body length, and is usually more than 65%; the tail has no long hairs except for a tuft at the tip.[3][5]
Distribution and habitat
Laxmann's shrew is found in the taiga zone of northern Europe and Asia. Its range extends from Norway and Sweden through northern Siberia to northwestern and northeastern China, Korea, Japan, and Sakhalin Island. It is widely distributed in both mountain and lowland forests, and also in the adjoining tundra. It favours damp woodland with plenty of moss, bushy scrub, and small trees, and the banks of streams and borders of swamps on moorland. It is not found on cultivated land.[2][5]
Ecology
This species is mainly diurnal and feeds on small invertebrates such as insects (especially beetles), spiders, millipedes, and earthworms, as well as conifer seeds when available. Breeding takes place in the summer when up to four litters of 2 to 11 (usually 7 or 8) young are born in an underground nest. Longevity is probably about one year.[3]
Status
S. caecutiens has an extremely wide distribution and is described as being abundant in many parts of its range. Other than the felling of timber, no particular threats have been identified, the total population size seems to be steady and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".[2]
^ abHutterer, R. (2005). Wilson, D.E.; Reeder, D.M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 285–286. ISBN978-0-8018-8221-0. OCLC 62265494.
^ abcdHenttonen, H.; Sheftel, B.; Ariunbold, J. (2016). "Sorex caecutiens". IUCN Red List of Threatened Species. 2016: e.T29662A22314809. doi:10.2305/IUCN.UK.2016-2.RLTS.T29662A22314809.en. Retrieved 19 November 2021.
^ abcJo, Yeong-Seok; Baccus, John T.; Koprowski, John L. (2018). Mammals of Korea. National Institute of Biological Resources. pp. 88–90. ISBN978-89-6811-369-7.
^Won, Byeong-o (원병오) (2004). 한국의 포유동물 (Hangugui poyudongmul, Mammals of Korea). Seoul: Dongbang Media. ISBN89-8457-310-8.
^ abSmith, Andrew T.; Xie, Yan (2013). Mammals of China. Princeton University Press. pp. 204–205. ISBN978-1-4008-4688-7.
March 06, 2023
laxmann, shrew, sorex, caecutiens, masked, shrew, species, shrew, range, extends, from, northern, scandinavia, baltic, japan, including, hokkaidō, sakhalin, korean, peninsula, favours, mountain, forests, sometimes, found, tundra, moorland, also, lowland, areas. Laxmann s shrew Sorex caecutiens or the masked shrew 2 is a species of shrew 1 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 Laxmann s shrew 1 Specimen with typical white feet the brush tail is not shown Conservation statusLeast Concern IUCN 3 1 2 Scientific classificationKingdom AnimaliaPhylum ChordataClass MammaliaOrder EulipotyphlaFamily SoricidaeGenus SorexSpecies S caecutiensBinomial nameSorex caecutiensLaxmann 1788Laxmann s shrew range Contents 1 Taxonomy 2 Description 3 Distribution and habitat 4 Ecology 5 Status 6 See also 7 ReferencesTaxonomy EditThis shrew was first described in 1788 by the Finnish Swedish explorer and naturalist Erik Laxmann who called it Sorex caecutiens and it is commonly known as Laxmann s shrew The type locality is to the southwest of Lake Baikal in Russia Several subspecies are recognised including S c hallamontanus from Jeju Island in South Korea 3 Description EditAn adult Laxmann s shrew has a weight of 3 to 11 g 0 1 to 0 4 oz and a head and body length of 4 8 to 7 8 cm 1 9 to 3 1 in with a tail of 3 9 to 5 2 cm 1 5 to 2 0 in 4 The snout is long and narrow and lacks a pale coloured streak at the side The teeth have red tips and the dentition distinguishes this shrew from other similar species The fur is shiny the pelage is bicoloured and the feet are white The tail is always more than half the head and body length and is usually more than 65 the tail has no long hairs except for a tuft at the tip 3 5 Distribution and habitat EditLaxmann s shrew is found in the taiga zone of northern Europe and Asia Its range extends from Norway and Sweden through northern Siberia to northwestern and northeastern China Korea Japan and Sakhalin Island It is widely distributed in both mountain and lowland forests and also in the adjoining tundra It favours damp woodland with plenty of moss bushy scrub and small trees and the banks of streams and borders of swamps on moorland It is not found on cultivated land 2 5 Ecology EditThis species is mainly diurnal and feeds on small invertebrates such as insects especially beetles spiders millipedes and earthworms as well as conifer seeds when available Breeding takes place in the summer when up to four litters of 2 to 11 usually 7 or 8 young are born in an underground nest Longevity is probably about one year 3 Status EditS caecutiens has an extremely wide distribution and is described as being abundant in many parts of its range Other than the felling of timber no particular threats have been identified the total population size seems to be steady and the International Union for Conservation of Nature has rated its conservation status as being of least concern 2 See also EditList of mammals of Finland List of mammals of KoreaReferences Edit a b Hutterer R 2005 Wilson D E Reeder D M eds Mammal Species of the World A Taxonomic and Geographic Reference 3rd ed Johns Hopkins University Press pp 285 286 ISBN 978 0 8018 8221 0 OCLC 62265494 a b c d Henttonen H Sheftel B Ariunbold J 2016 Sorex caecutiens IUCN Red List of Threatened Species 2016 e T29662A22314809 doi 10 2305 IUCN UK 2016 2 RLTS T29662A22314809 en Retrieved 19 November 2021 a b c Jo Yeong Seok Baccus John T Koprowski John L 2018 Mammals of Korea National Institute of Biological Resources pp 88 90 ISBN 978 89 6811 369 7 Won Byeong o 원병오 2004 한국의 포유동물 Hangugui poyudongmul Mammals of Korea Seoul Dongbang Media ISBN 89 8457 310 8 a b Smith Andrew T Xie Yan 2013 Mammals of China Princeton University Press pp 204 205 ISBN 978 1 4008 4688 7 Retrieved from https en wikipedia org w index php title Laxmann 27s shrew amp oldid 1123414718, wikipedia, wiki, book, books, library,
