noms dans le fil d’Ariane
There are no known adverse affects of S. tundrensis on humans. Other shrews have been known to prey on Douglas fir seeds, which could have an effect on the regeneration of Douglas firs.
Sorex tundrensis is of least concern on the IUCN list. It is not listed on CITES appendices or the United States Endangered Species Act.
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
IUCN Red List of Threatened Species: least concern
Little is known about the communication in S. tundrensis. However, other Sorex species use well-developed olfactory, tactile, and auditory senses. Shrews use their long snouts, covered with vibrissae, for locating prey. The tip of the snout is a highly sensitive glandular pad or rhinarium. Olfaction is also used socially in shrews. There are many scent glands that are scattered in the skin that cover most of the body. These scent glands are probably used in communicating sexual state and marking territories.
Shrew species communicate with different types of calls as well, for example, chirps are sometimes used in courtship.
Communication Channels: tactile ; acoustic ; chemical
Other Communication Modes: scent marks
Perception Channels: visual ; tactile ; acoustic ; chemical
Tundra shrews are preyed on by owls, hawks, snakes, and small mammalian carnivores, such as weasels. It is suggested that their foul odor deters some predators, such as domestic cats.
Known Predators:
Anti-predator Adaptations: cryptic
Tundra shrews are medium-sized, stocky shrews. In Canada mass ranges from 4.9 to 10.0 g (average 6.8 g). Head and body length is between 84 and 115 mm (average 97 mm) and tail length ranges from 25 to 37 mm (average 31 mm). In Alaska, the mass ranges from 3.8 to 10.0 g (average 6.6 g). Head and body length is between 83 to 120 mm (average 95 mm) and tail length ranges from 20 to 36 mm (average 29 mm).
Sorex tundrensis has a distinct pelage that varies seasonally and with age. In summer adults have a tricolor pelage, with a dark brown back, pale brown sides, and a pale gray belly (Keys and Wilson 2002). The difference between back and belly pelage is less distinct in juveniles and subadults. In winter pelage is bicolored, consisting of a brown back and grayish sides and belly. Pelage is also longer in winter than in summer (van Zyll de Jong 1983). The tail is bicolored, with the top notably more brownish than the bottom and darker towards the tip. The winter molt begins in April and May and continues into June. In August and September, the winter fur begins to grow and the fall molt is completed in November (van Zyll de Jong 1999).
Sorex tundrensis and its close relative, S. arcticus, are similarly patterned, but the latter has a longer tail with a much darker back. Sorex tundrensis is larger than S. ugyunak, as well as having a shorter tail.
The dental formula is 3/1, 1/1, 3/1, 3/3 = 32 teeth.
Range mass: 3.8 to 10 g.
Range length: 83 to 120 mm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes alike
Longevity ranges from 12 to 18 months and maturity is probably the spring following birth (Forsyth 1999). Nothing is known about the longevity of S. tundrensis in captivity. However, in other soricids, life expectancy varies from season to season, and susceptibility to death is believed to be highest during the juvenile stage and the breeding period (Churchfield 1990).
Typical lifespan
Status: wild: 12 to 18 months.
Sorex tundrensis inhabits a variety of alpine and arctic habitats as well as forests, shrublands, and meadows. Habitats include a variety of dwarf trees and shrubs, including Betula, Salix, and Ledum species (van Zyll de Jong 1983). They are found in mossy bog habitats but seem to prefer habitats that are more dry than do sympatric species of shrews, such as barren ground shrews, Sorex ugyanak (MacDonald 2003).
Habitat Regions: temperate ; terrestrial
Terrestrial Biomes: tundra ; taiga
Wetlands: bog
Tundra shrews, Sorex tundrensis, were once considered to be a subspecies of S. arcticus (MacDonald 2003). More recent literature, however, has treated S. tundrensis as a distinct Nearctic species. When specimens of S. arcticus from Edmonton, Alberta were compared with specimens of S. tundrensis from the Northwest Territories they were found to differ substantially in all external measurements except for except for hind foot length and nearly all cranial measurements. In addition to differences in size, the two species also differ in the morphology of their auditory ossicles (Youngman 1975). Moreover, George (1988) found that S. tundrensis was a genetically distinct species from S. arcticus based on a molecular study of 26 allozyme loci. Sorex tundrensis is a Beringian species, unlike S. arcticus, suggesting that the ancestor of tundra shrews entered North America from Asia when Alaska and Siberia were still connected at the Bering Strait (van Zyll de Jong 1983).
Sorex tundrensis is a member of the Sorex araneus group, which has trivalent sex chromosomes (X, Y1, and Y2) in males (Lukacova, et al. 1996). Other species belonging to this group are European common shrews (Sorex araneus) and Arctic shrews (Sorex arcticus) (van Zyll de Jong 1983). Interestingly, Palearctic populations of S. tundrensis have a karyotype that is considered most primitive in Sorex araneus group (Lukacova et al. 1996). For this reason, Volobouev (1989) has suggested that tundra shrews are the oldest lineage of extant species in the araneus group.
Sorex tundrensis is a Nearctic species. It ranges through most of Alaska, including Kodiak Island and across the Bering Strait into northeastern Siberia, where it is proposed that the closest relatives of S. tundrensis are found (van Zyll de Jong 1983). In Canada, its range includes northern Yukon Territory, the Mackenzie Delta region of the Northwest Territories, and the extreme northwestern part of British Columbia (van Zyll de Jong 1983). Sorex tundrensis has a limited distribution in British Columbia, being confined to the Haines Triangle region (Nagorsen 1996).
Biogeographic Regions: nearctic (Native )
Little is known about the food habits of S. tundrensis. In Alaska they were found to eat insects, larvae, earthworms, and floral parts of small grasses (van Zyll de Jong 1983). Tundra shrews, like other shrews, must forage almost continually to fuel their high metabolic rates.
Animal Foods: insects; terrestrial worms
Plant Foods: flowers
Primary Diet: carnivore (Insectivore , Vermivore)
Little is known about the ecosystem roles of S. tundrensis. Other shrews in the genus Sorex are very important in regulating invertebrate prey populations.
Shrews are voracious predators of insect larvae and play an important part in regulating pest species.
Positive Impacts: controls pest population
Males become sexually active in the summer, but reproductive activity decreases as autumn approaches (van Zyll de Jong 1983). Churchfield (1990) found that the flank glands in soricids are prominent in adult males and may act in attracting females for breeding. There is little specific information on reproduction in S. tundrensis.
There is not a lot of information on the breeding biology of this species. However, pregnant females have been recorded in June, July, and September. Numbers of embryos range from 8 to 12, with an average of 10 (van Zyll de Jong 1983). Females probably produce several litters in a season and are capable of breeding in their first summer (Nagorsen 1996). Gestation is poorly understood, but has been suggested to range from 13 to 28 days, with number of offspring ranging from 8 to 12 (Forsyth 1999). Tundra shrews breed in the spring following their birth.
Breeding interval: Tundra shrews breed several times during the breeding season.
Breeding season: Tundra shrews breed during the warm season each year.
Range number of offspring: 8 to 12.
Range gestation period: 13 to 28 days.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization ; viviparous
Females nurse and protect their young in a nest until they become independent.
Parental Investment: altricial ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female, Protecting: Female)
La musaranya de la tundra (Sorex tundrensis) és una espècie de musaranya del gènere Sorex. És una de les poques espècies d'aquest grup present tant al paleàrtic com al neàrtic. El seu àmbit de distribució s'estén des de Sibèria a l'est del riu Petxora fins a la costa nord-oriental d'Àsia, però no es troba a Kamtxatka. També es troba a Nord-amèrica, on s'estén des de les Aleutianes, l'oest, el centre i el nord d'Alaska fins a la regió nòrdica del riu Yukon. El seu hàbitat és l'estepa de tundra. A causa d'aquest hàbitat septentrional, és un dels pocs insectívors de la fauna àrtica.
La musaranya de la tundra (Sorex tundrensis) és una espècie de musaranya del gènere Sorex. És una de les poques espècies d'aquest grup present tant al paleàrtic com al neàrtic. El seu àmbit de distribució s'estén des de Sibèria a l'est del riu Petxora fins a la costa nord-oriental d'Àsia, però no es troba a Kamtxatka. També es troba a Nord-amèrica, on s'estén des de les Aleutianes, l'oest, el centre i el nord d'Alaska fins a la regió nòrdica del riu Yukon. El seu hàbitat és l'estepa de tundra. A causa d'aquest hàbitat septentrional, és un dels pocs insectívors de la fauna àrtica.
Die Tundra-Rotzahnspitzmaus (Sorex tundrensis) ist eine Art aus der Gattung der Rotzahnspitzmäuse. Sie ist eine der wenigen Arten dieser Gattung, die sowohl zur Paläarktis wie zur Nearktis gehören. Ihr Verbreitungsgebiet erstreckt sich von Sibirien östlich des Flusses Petschora bis an die Nordostküste Asiens. Sie fehlt allerdings auf Kamtschatka. Ihr Nordamerikanisches Verbreitungsgebiet reicht von den Aleuten, West-, Zentral- und Nordalaska bis in das nördliche Gebiet des Yukon River. Ihr Lebensraum ist die tundrische Steppe. Aufgrund dieses nördlichen Lebensraums zählt sie zu den wenigen Insektenfressern der arktischen Fauna.
In ihrem Aussehen gleicht sie sehr der Portenko-Rotzahnspitzmaus, deren Vorkommen allerdings auf die Paläarktis begrenzt ist. Wie diese hat sie einen braunen Oberkörper. Ihre Flanken sind dagegen von gelb-brauner Farbe. Die Körperunterseite ist grau. Sie ist tendenziell allerdings etwas größer und schwerer. Ihre Körperlänge inklusive Schwanz beträgt zwischen 80 und 120 Millimeter. Ihr Gewicht liegt zwischen 5 und 10 Gramm.
Die Tundra-Rotzahnspitzmaus (Sorex tundrensis) ist eine Art aus der Gattung der Rotzahnspitzmäuse. Sie ist eine der wenigen Arten dieser Gattung, die sowohl zur Paläarktis wie zur Nearktis gehören. Ihr Verbreitungsgebiet erstreckt sich von Sibirien östlich des Flusses Petschora bis an die Nordostküste Asiens. Sie fehlt allerdings auf Kamtschatka. Ihr Nordamerikanisches Verbreitungsgebiet reicht von den Aleuten, West-, Zentral- und Nordalaska bis in das nördliche Gebiet des Yukon River. Ihr Lebensraum ist die tundrische Steppe. Aufgrund dieses nördlichen Lebensraums zählt sie zu den wenigen Insektenfressern der arktischen Fauna.
In ihrem Aussehen gleicht sie sehr der Portenko-Rotzahnspitzmaus, deren Vorkommen allerdings auf die Paläarktis begrenzt ist. Wie diese hat sie einen braunen Oberkörper. Ihre Flanken sind dagegen von gelb-brauner Farbe. Die Körperunterseite ist grau. Sie ist tendenziell allerdings etwas größer und schwerer. Ihre Körperlänge inklusive Schwanz beträgt zwischen 80 und 120 Millimeter. Ihr Gewicht liegt zwischen 5 und 10 Gramm.
Уһун тумус (лат. Sorex tundrensis, нууч. Тундровая бурозубка) — күүдээхтэр уустарыгар киирэр үөнүнэн-көйүүрүнэн аһылыктанар атын күүдээхтэргэ тэҥнээтэххэ саллаҕар төбөлөөх, кылгас уонна кэтит тумустаах күүдээх. Атын күүдээхтэртэн көхсүгэр хара эбэтэр буурай чаппараахтааҕынан уратылаах.
Саха сирин барытыгар тарҕаммыт көрүҥ. Сүрүн олохсуйар сирдэрэ - тиит уонна сэбирдэхтээх ойуурдар, оттонор ходуһалар уонна бааһыналар. Элбэхтик көстөр көрүҥ. Кыһын утуйбат. Олоҕун уһуна 1,3-1,5 сыл. Үөнүнэн-көйүүрүнэн, ооҕуйдарынан, ардах чиэрбэлэринэн аһылыктанар. Сууккаҕа бэйэтин ыйааһыныттан 170% элбэх аһы сиир[1].
Сүрүн өстөөхтөрө кыра тыҥырахтаах көтөрдөр.
Уһун тумус (лат. Sorex tundrensis, нууч. Тундровая бурозубка) — күүдээхтэр уустарыгар киирэр үөнүнэн-көйүүрүнэн аһылыктанар атын күүдээхтэргэ тэҥнээтэххэ саллаҕар төбөлөөх, кылгас уонна кэтит тумустаах күүдээх. Атын күүдээхтэртэн көхсүгэр хара эбэтэр буурай чаппараахтааҕынан уратылаах.
Саха сирин барытыгар тарҕаммыт көрүҥ. Сүрүн олохсуйар сирдэрэ - тиит уонна сэбирдэхтээх ойуурдар, оттонор ходуһалар уонна бааһыналар. Элбэхтик көстөр көрүҥ. Кыһын утуйбат. Олоҕун уһуна 1,3-1,5 сыл. Үөнүнэн-көйүүрүнэн, ооҕуйдарынан, ардах чиэрбэлэринэн аһылыктанар. Сууккаҕа бэйэтин ыйааһыныттан 170% элбэх аһы сиир.
Сүрүн өстөөхтөрө кыра тыҥырахтаах көтөрдөр.
The tundra shrew (Sorex tundrensis) is a small shrew found in Alaska, the northern Yukon Territory, the MacKenzie Delta region of the Northwest Territories, extreme northwestern British Columbia[3] and eastern Russia. At one time, this animal was considered to be a subspecies of the Arctic shrew (Sorex arcticus).
It is dark brown on its back with pale brown sides and grey underparts. Its tail is brown on top and lighter brown below. Its fur grows longer for winter. Its body is about 12 centimetres (4.7 in) in length including a 4 centimetres (1.6 in) long tail. It weighs about 11 grams (0.39 oz).
This animal is found on hillsides with shrubs or grassy vegetation or dry ridges near marshes or bogs. It eats insects, worms and grasses. Predators include hawks and owls. This animal is active day and night year-round, burrowing through the snow in winter. It mates during the spring. 4 to 8 young are born in a nest under a log or in a crevice.
The tundra shrew (Sorex tundrensis) is a small shrew found in Alaska, the northern Yukon Territory, the MacKenzie Delta region of the Northwest Territories, extreme northwestern British Columbia and eastern Russia. At one time, this animal was considered to be a subspecies of the Arctic shrew (Sorex arcticus).
It is dark brown on its back with pale brown sides and grey underparts. Its tail is brown on top and lighter brown below. Its fur grows longer for winter. Its body is about 12 centimetres (4.7 in) in length including a 4 centimetres (1.6 in) long tail. It weighs about 11 grams (0.39 oz).
This animal is found on hillsides with shrubs or grassy vegetation or dry ridges near marshes or bogs. It eats insects, worms and grasses. Predators include hawks and owls. This animal is active day and night year-round, burrowing through the snow in winter. It mates during the spring. 4 to 8 young are born in a nest under a log or in a crevice.
La musaraña de la tundra (Sorex tundrensis) es una especie de musaraña del género Sorex. Es una de las pocas especies de este grupo presente tanto al paleártico como al neártico. Su ámbito de distribución se extiende desde Siberia al este del río Pechora hasta la costa nororiental de Asia, pero no se encuentra a Kamchatka. También se encuentra en Norteamérica, donde se extiende desde las Aleutianas, el oeste, el centro y el norte de Alaska hasta la región nórdica del río Yukon. Su hábitat es la estepa de tundra. Debido a este hábitat septentrional, es uno de los pocos insectívoros de la fauna ártica.
Datos: Q1764913
Multimedia:
Especies: Sorex tundrensis
Sorex tundrensis Sorex generoko animalia da. Lehen Insectivora edo Soricomorpha deitzen zen taldearen barruan daude. Gaur egun Lipotyphla deitzen den taldearen barruko Soricinae azpifamilia eta Soricidae familian sailkatuta dago.
Sorex tundrensis Sorex generoko animalia da. Lehen Insectivora edo Soricomorpha deitzen zen taldearen barruan daude. Gaur egun Lipotyphla deitzen den taldearen barruko Soricinae azpifamilia eta Soricidae familian sailkatuta dago.
Tundrapäästäinen (Sorex tundrensis) on päästäislaji.
Tundrapäästäistä tavataan tundralla ja metsäalueilla Luoteis-Kanadassa ja Alaskassa, Venäjän itäosista Uralille sekä Kiinan ja Mongolian pohjoisosissa. Se on runsaslukuinen laji ja Siperian jokien varsilla se on yleisin nisäkäslaji.[1]
Tundrapäästäinen käyttää ravinnokseen pääasiassa kovakuoriaisia. Se lisääntyy kolme tai neljä kertaa vuodessa ja synnyttää kerralla 7–10 poikasta.[1]
Tundrapäästäinen (Sorex tundrensis) on päästäislaji.
De toendraspitsmuis (Sorex tundrensis) is een zoogdier uit de familie der spitsmuizen (Soricidae). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Clinton H. Merriam in 1900.
Het verspreidingsgebied strekt zich uit van het stroomgebied van de rivier Petsjora en de westelijke hellingen van het Oeralgebergte, over een breed front in oostelijke richting tot aan het noordoosten van China en het Tsjoektsjenschiereiland. Wordt daarnaast ook in Noord-Amerika aangetroffen in Alaska en het noordwesten van Canada.
Bronnen, noten en/of referenties
De toendraspitsmuis (Sorex tundrensis) is een zoogdier uit de familie der spitsmuizen (Soricidae). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Clinton H. Merriam in 1900.
Sorex tundrensis[2][3][4][5][6][7] är en däggdjursart som beskrevs av Clinton Hart Merriam 1900. Sorex tundrensis ingår i släktet Sorex och familjen näbbmöss.[8][9] IUCN kategoriserar arten globalt som livskraftig.[1] Inga underarter finns listade i Catalogue of Life.[8]
Denna näbbmus blir 83 till 120 mm lång (huvud och bål), har en 20 till 37 mm lång svans och väger 3,8 till 10 g. Hos arten förekommer en sommar- och en vinterpäls och dessutom finns variationer mellan individer med olika ålder. Under sommaren har pälsen på ovansidan en mörkbrun färg, kroppssidorna är mera ljusbrun och undersidan är ljusgrå. Mellan augusti och november byter Sorex tundrensis till den långa vinterpälsen som är brun på ryggen och grå på sidorna och buken. Mellan april och juni sker bytet till sommarpälsen. Närbesläktade arten som Sorex arcticus och Sorex ugyunak har i jämförelse till kroppslängden en längre svans.[10]
Som namnet antyder förekommer arten huvudsakligen i tundran. Den lever i Alaska och i angränsande regioner av Kanada och sedan finns en stor population i nordöstra Asien västerut till Uralbergen och söderut till nordöstra Kina, Koreahalvön, centrala Mongoliet och centrala Kazakstan.[1]
Förutom tundran lever Sorex tundrensis i habitat som stäpper och andra gräsmarker, halvöknar (nära vattendrag) och buskskogar.[1]
Individerna lever utanför parningstiden ensam. Reviren är cirka 1500 m² stora och troligen förekommer en överlappning. Antagligen håller arten ingen vinterdvala på grund av att den inte lagrar fett i kroppen. Sorex tundrensis äter huvudsakligen skalbaggar och dessutom ingår andra insekter och deras larver samt daggmaskar och i viss mån även gräs i födan. Arten har liksom andra näbbmöss en hög ämnesomsättning och måste äta mycket.[1][10]
Under den vara årstiden kan honor ha 3 till 4 kullar med 7 till 10 ungar per kull.[1] För dräktighetens längd finns olika uppgifter som varierar mellan 13 och 28 dagar. Före den första vintern föds vanligen inga ungar. Livslängden uppskattas vara 12 till 18 månader men de flesta individer dör som ungdjur. Arten har olika naturliga fiender som ugglor, rovfåglar, ormar och medelstora rovdjur.[10]
Wikimedia Commons har media som rör Sorex tundrensis.
Wikispecies har information om Sorex tundrensis.
Sorex tundrensis är en däggdjursart som beskrevs av Clinton Hart Merriam 1900. Sorex tundrensis ingår i släktet Sorex och familjen näbbmöss. IUCN kategoriserar arten globalt som livskraftig. Inga underarter finns listade i Catalogue of Life.
Країни поширення: Канада, Китай, Монголія, Російська Федерація, Сполучені Штати Америки. Мешкає серед густої рослинності трав і чагарників.
Темно-коричневий на спині з блідо-коричневими боками і сірим низом. Хвіст коричневий зверху і світло-коричневий внизу. Його хутро стає довшим на зиму. Довжина тіла близько 12 см, включаючи 4 см хвіст. Важить близько 11 гр.
Мешкає поодинці. Їсть переважно жуків; також живиться хробаками і травами. Хижаки: яструби і сови. Ця тварина є активною вдень і вночі цілий рік.
Розмножується в літній час, буває 3-4 приплоди на рік по 7-10 дитинчат в кожному, що народжуються в гнізді під колодою або в щілині.
Sorex tundrensis là một loài động vật có vú trong họ Chuột chù, bộ Soricomorpha. Loài này được Merriam mô tả năm 1900.[2]
Phương tiện liên quan tới Sorex tundrensis tại Wikimedia Commons
Bài viết liên quan đến họ Chuột chù này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Sorex tundrensis là một loài động vật có vú trong họ Chuột chù, bộ Soricomorpha. Loài này được Merriam mô tả năm 1900.
阿拉斯加鼩鼱（学名：Sorex tundrensis）为鼩鼱科鼩鼱属的动物。在中国大陆，分布于东北等地。该物种的模式产地在美国阿拉斯加。[1]
这是一篇與哺乳动物相關的小作品。你可以通过编辑或修订扩充其内容。
툰드라뒤쥐(Sorex tundrensis)는 땃쥐과에 속하는 포유류의 일종이다.[2] 알래스카, 유콘 준주 북부, 노스웨스트 준주의 매킨지 델타 지역, 특히 브리티시컬럼비아주 북서 지역[3] 그리고 러시아 동부에서 발견되는 작은 뒤쥐류이다. 한때는 북극뒤쥐의 아종으로 간주하기도 했다.
