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Perognathus flavus is one of the smallest mice in North America. It has soft, silky fur, short ears, and a sparsely haired tail. The dorsal area is a pinkish buff, lightly mixed with black. The ventral area is pure white. They have a conspicuous postauricular patch of buffy fur, which is usually twice as large as the ear (ear is 4-7 mm). The total length is 95-118 mm, tail length is 41-58 mm, hindfoot length is 12-18 mm, and weight is 6-9 g. The main things that will differentiate this mouse from other mice is the incredibly soft fur, small size, and relatively large ear patch. Also, the interparietal bone is more narrow than the interorbital breadth of the skull.
Range mass: 6 to 9 g.
Other Physical Features: endothermic ; bilateral symmetry
Average basal metabolic rate: 0.097 W.
The silky pocket mouse prefers to live in low valley bottoms with good soils, where they can live among weeds and shrubs and burrow in the sand. However, they are also more tolerant to harsh habitat conditions than other pocket mice; they can be found in rocky areas and hard and stony soils.
Terrestrial Biomes: desert or dune ; savanna or grassland ; chaparral
The silky pocket mouse can be found only in western and southwestern North America. Specifically, it can be found as far west as Colorado, as far east as Texas, as far north as South Dakota, and as far south as Mexico.
Biogeographic Regions: nearctic (Native )
The food habits of the silky pocket mouse are similar to other small pocket mice, mainly consuming seeds from various grasses and weeds. They also eat some green vegetation and some insects. They have been found to eat pigweed, goosefoot, Russian-thistle, prickly-pear, globemallow, sand-bur, phlox, juniper berries, gaura, and mustard seeds and grasses. The silky pocket mouse feeds primarily on stored seeds during midday to prepare energetically for foraging in early evening. They store much of the food that they find, placing it in their burrows. The silky pocket mouse is adapted to conserve water very efficiently. They rarely, or never, drink water. Instead, they obtain all of the moisture needed for survival through the breakdown of their food (metabolic water).
While there is no special status assigned to the silky pocket mouse, there is an increasing concern for particular subspecies. Certain Californian subspecies (P. longimembris brevinasus, P. inornatus psammophilus, p. alticola alticola, P. longimembris pacificus) are losing a vast amount of habitat due to construction and urbanization.
US Federal List: no special status
CITES: no special status
IUCN Red List of Threatened Species: least concern
Perception Channels: tactile ; chemical
The breeding season extends from early spring to late fall, as pregnant females have been found from March through October. The gestation period is 28 days. Usually, females have one litter per year of 2-6 young, and there is occasionally a second litter in late summer. The silky pocket mouse becomes sexually active after its postjuvenile molt, which means that some of the individuals born early in the spring season are able to breed by late summer.
Key Reproductive Features: gonochoric/gonochoristic/dioecious (sexes separate); sexual
Average gestation period: 26 days.
Average number of offspring: 4.
Perognathus flavus ye una especie de royedor de la familia Heteromyidae.
Alcuéntrase en Méxicu y Estaos Xuníos.
. Perognathus flavus ye una especie de royedor de la familia Heteromyidae.
Perognathus flavus és una espècie de rosegador de la família dels heteròmids. Viu al centre-sud de les Grans Planes (Estats Units) i a Sonora i l'Altiplà Mexicà (Mèxic). Es tracta d'un animal solitari. Els seus hàbitats naturals són els herbassars i matollars àrids i semiàrids. Es creu que no hi ha cap amenaça significativa per a la supervivència d'aquesta espècie.[1]
Perognathus flavus és una espècie de rosegador de la família dels heteròmids. Viu al centre-sud de les Grans Planes (Estats Units) i a Sonora i l'Altiplà Mexicà (Mèxic). Es tracta d'un animal solitari. Els seus hàbitats naturals són els herbassars i matollars àrids i semiàrids. Es creu que no hi ha cap amenaça significativa per a la supervivència d'aquesta espècie.
Die Seiden-Taschenmaus (Perognathus flavus) ist eine häufige Art aus der Familie der Taschenmäuse, welche in den Wüsten Nordamerikas vorkommt.
Das weiche Fell ist an der Körperoberseite hellbraun und am Bauch weiß gefärbt. Die Körperlänge beträgt 10–12 cm, die Schwanzlänge 4–6 cm. An den Füßen hat sie dicke Polster aus weichem Haar, welche Verbrennungen verhindern und bessere Fortbewegung auf dem weichen Wüstensand ermöglichen. Zur Fortbewegung nutzt sie alle 4 Füße oder nur die Hinterbeine. Zum Transport der Nahrung dienen ihr die dicken Backentaschen.
Ihr Verbreitungsgebiet sind die Trockengebiete der USA von Wyoming, dort möglicherweise ausgestorben, bis Texas sowie Mexikos.
Sie lebt allein in selbst gegrabenen, unterirdischen Bauen, welche sie nur zur Suche nach Nahrung, vor allem Samen, aber auch Insekten verlässt. Sie legt wie alle Taschenmäuse große Vorräte an, welche sie in ihrem Bau hortet. Die Tiere sind standorttreu und verteidigen ihr Revier energisch gegen fremde Artgenossen. Die Lebenserwartung beträgt bis zu 2 Jahre.
Die Fortpflanzungsperiode dieser Art dauert von April bis Juni und von August bis September. Der Wurf des Weibchens beträgt bis zu 4 Junge, diese verlassen den elterlichen Bau in einem Alter von 3 Wochen zum ersten Mal.
Da die Art weit verbreitet ist, stuft die International Union for Conservation of Nature and Natural Resources (IUCN) diese Art als nicht gefährdet (LC, Least Concern) ein. Eine Unterart (Perognathus flavus goodpastori), welche nur in Arizona vorkommt, ist gefährdet, weil sie nur sehr verstreut und in einem sehr kleinen Gebiet vorkommt.
Die Seiden-Taschenmaus (Perognathus flavus) ist eine häufige Art aus der Familie der Taschenmäuse, welche in den Wüsten Nordamerikas vorkommt.
The silky pocket mouse (Perognathus flavus) is a species of rodent in the family Heteromyidae.[2] It is found in northern and central Mexico and the southwest region of the United States. It is a species of least concern, according to the IUCN, with no known major threats. The silky pocket mouse eats seeds, succulent parts of plants and nuts, and carries food in its cheek pouches. It lives in low valley bottoms with soft soils, among weeds and shrubs, where it burrows in the sand to bury seed caches. The species is more tolerant of harsh habitat conditions than other pocket mice.
The silky pocket mouse is the smallest pocket mouse in the family Heteromyidae, though otherwise is very similar in appearance to the other members of the genus Perognathus. Its relatively short tail, which is buff or dusky colored above and white below, does not have a tuft of hair at the tip and is always shorter than the combined length of the head and body, which average about 60 mm (2.4 in). The upper parts are ochre or yellowish-buff,[3] with many black-tipped hairs. The underparts and the forelegs are white. Behind the ears there are clear buff patches without black-tipped hairs and there is a narrow strip of plain buff between the dorsal coloring and the underparts. The species exhibits little sexual dimorphism, but the male tends to have a slightly longer tail.[4]
The silky pocket mouse is endemic to the southern United States and Mexico. It is present in the states of South Dakota, Nebraska, Utah, Colorado, Kansas, Arizona, New Mexico, Texas and Oklahoma and possibly Wyoming (where it may be extinct). In Mexico, it is present in most of the central plateau.[1] The silky pocket mouse occurs in arid and semiarid grassland, sandy and rocky places, Pinus - Juniper areas, Artemisia flats, shrublands and areas with Yucca and cactus.[4]
The silky pocket mouse is mainly nocturnal and lives in a burrow by day. In warmer weather it consumes cached food in the afternoon before emerging on the surface to forage in the evening. It mostly collects grass and weed seeds but also eats some green leafy material. It takes the husks off the seeds before storing them in its cheek pouches and carrying them back to its burrow where they are cached. A silky pocket mouse collects an average of .154 g (0.01 oz) of seed on each sortie. When a pile of 25 g (0.88 oz) was deposited near a burrow (sufficient for maintenance for up to 10 days), the pocket mouse collected and stored it all in one night, and still emerged to forage on succeeding nights. In cold weather it occasionally forages by day, and in really bad weather it may not come out of the burrow for several days.[4]
The silky pocket mouse has a home range that extends to a distance of about 60 meters (200 ft) from its burrow, with males often having larger ranges than females. When it moves fast, the silky pocket mouse proceeds with short, kangaroo-like bounds, but at slower speed it walks. It requires no water at relative humidities between 25 and 60%, obtaining its moisture needs from its food. When the ambient temperature is low (below 5 °C (41 °F)), it allows its body temperature to fall by about 6 °C (43 °F) and enters short periods of torpor. In between these it eats some of its stored seeds in the afternoon before emerging from its burrow to forage in the evening before temperature falls too low.[4]
The silky pocket mouse often uses a burrow excavated by the banner-tailed kangaroo rat (Dipodomys spectabilis), whether it is occupied or empty, or sometimes shares a burrow made by a Phillips' kangaroo rat (Dipodomys phillipsii).[4][5] Abandoned pocket gopher mounds are often tunnelled by the silky pocket mouse.[4]
Silky pocket mouse burrows may be open or closed (with the entrance blocked loosely with soil) in different parts of the range. In Colorado, entrances to the burrows are often at the foot of a prickly pear, yucca or low shrub, while in New Mexico they are often underneath Artemisia, Chrysothamnus or Atriplex, dug into the low mounds of soil that often accumulate there. Tracks in the dusty sand have been found leading to and from nearby seed-laden plants such as Helianthus, other composite plants and Croton. There are usually several entrances to the burrow and a complex system of tunnels and rooms. The central chamber is usually less than 20 cm (8 in) below the main entrance and is 8 to 10 cm (3 to 4 in) in diameter. From it, a long tunnel leads down to the rather larger nesting chamber. The nest is situated there and is globular and made of dried grasses and surrounded by seed hulls. A typical nest is about 6.5 cm (2.6 in) in diameter. About eight tunnels radiate from the nesting chamber, some of which terminate in a storage room in which seeds or husks are cached and hidden behind loose soil.[4]
Reproduction takes place during most of the year in New Mexico; in Arizona it peaks in February and May. A typical litter of three or four young (range one to six) is born after a gestation period of 22 to 26 days. The young open their eyes after about 15 days and are weaned 15 days later. Longevity averages about 3.3 months, but some individuals live for twenty months, and in captivity some have survived for five years. The population density varies between seasons and years.[4]
The silky pocket mouse has a wide range and is common in most of that range. In Arizona there is an isolated subspecies, P. f. goodpastori, which has a restricted range. This subspecies is considered threatened, but in general the silky pocket mouse faces no particular threats and is present in a number of protected areas. The IUCN lists it as being of "least concern".[1]
The silky pocket mouse (Perognathus flavus) is a species of rodent in the family Heteromyidae. It is found in northern and central Mexico and the southwest region of the United States. It is a species of least concern, according to the IUCN, with no known major threats. The silky pocket mouse eats seeds, succulent parts of plants and nuts, and carries food in its cheek pouches. It lives in low valley bottoms with soft soils, among weeds and shrubs, where it burrows in the sand to bury seed caches. The species is more tolerant of harsh habitat conditions than other pocket mice.
Perognathus flavus es una especie de roedor de la familia Heteromyidae.
Se encuentran en México y Estados Unidos.
Perognathus flavus es una especie de roedor de la familia Heteromyidae.
Perognathus flavus Perognathus generoko animalia da. Karraskarien barruko Perognathinae azpifamilia eta Heteromyidae familian sailkatuta dago.
Perognathus flavus Perognathus generoko animalia da. Karraskarien barruko Perognathinae azpifamilia eta Heteromyidae familian sailkatuta dago.
Perognathus flavus
Perognathus flavus est une espèce de rongeurs de la famille des Heteromyidae appelée Souris-à-abajoue soyeuse[1] ou Souris à poche soyeuse [2],[3]. Cette souris à abajoues vit au Mexique et aux États-Unis.
L'espèce a été décrite pour la première fois en 1855, par Spencer Fullerton Baird, un zoologiste américain.
On rencontre ce petit rongeur au Mexique et dans de nombreux états aux États-Unis : Arizona, Colorado, Kansas, Nebraska, Nouveau-Mexique, Oklahoma, Dakota du Sud, Texas, Utah), mais elle est probablement éteinte au Wyoming[4].
Selon Mammal Species of the World (version 3, 2005) (29 nov. 2012)[5] :
Selon NCBI (29 nov. 2012)[6] :
Perognathus flavus
Perognathus flavus est une espèce de rongeurs de la famille des Heteromyidae appelée Souris-à-abajoue soyeuse ou Souris à poche soyeuse ,. Cette souris à abajoues vit au Mexique et aux États-Unis.
L'espèce a été décrite pour la première fois en 1855, par Spencer Fullerton Baird, un zoologiste américain.
De zijdeharige muisgoffer (Perognathus flavus) is een zoogdier uit de familie van de wangzakmuizen (Heteromyidae). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Baird in 1855.
De soort komt voor in Mexico en de Verenigde Staten.
Bronnen, noten en/of referentiesDe zijdeharige muisgoffer (Perognathus flavus) is een zoogdier uit de familie van de wangzakmuizen (Heteromyidae). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Baird in 1855.
Multimedia w Wikimedia Commons Szczuroskocznik jedwabisty[3] (Perognathus flavus) – gatunek gryzonia z rodziny karłomyszowatych[4].
Występuje na suchych, jałowych nizinach USA od Wyoming do Teksasu i Meksyku.
Szczuroskocznik jedwabisty ma gęste, miękkie futerko, które utrzymuje w nieskazitelnym porządku i czystości. Gdy ten nocny gryzoń, opuszcza wieczorem norę, piasek jest jeszcze bardzo gorący. Gęste poduszeczki z miękkich włosów pokrywające podeszwy łapek chronią je przed oparzeniem oraz umożliwiają równomierne rozłożenie nacisku spowodowanego ciężarem ciała na podłoże, co przeciwdziała zapadaniu się zwierzęcia w sypkim piasku. Szczuroskocznik ten porusza się na czterech kończynach lub tylko na dwóch tylnych.
Okres godowy trwa od kwietnia do czerwca oraz ponownie w sierpniu i wrześniu. Samica rodzi zwykle 4 młode w miocie. Gniazdo znajdujące się głęboko w ziemi młode opuszczają po raz pierwszy w wieku około 3 tygodni.
Szczuroskocznik jedwabisty (Perognathus flavus) – gatunek gryzonia z rodziny karłomyszowatych.
Kortsvansad fickspringmus (Perognathus flavus[2][3][4][5][6][7][8]) är en däggdjursart som beskrevs av Baird 1855. Perognathus flavus ingår i släktet fickspringmöss och familjen påsmöss.[9][10] IUCN kategoriserar arten globalt som livskraftig.[1]
Inga underarter finns listade i Catalogue of Life.[9] Wilson & Reeder (2005) skiljer mellan 14 underarter.[6]
Perognathus flavus blir med svans 95 till 118 mm lång, svanslängden är 41 till 58 mm och vikten varierar mellan 6 och 9 g. Bakfötterna är 12 till 18 mm långa. På ovansidan förekommer mjuk gulbrun päls med några svarta hår inblandade och ibland med en rosa skugga. Undersidan är vit och svansen är bara glest täckt med hår. En mer eller mindre tydlig ljus fläck finns vid varje öra.[11]
Denna gnagare förekommer i centrala USA och i Mexiko. Utbredningsområdet sträcker sig från Wyoming och South Dakota till centrala Mexiko. En avskild population finns vid Kaliforniska viken. Arten vistas i halvtorra eller torra buske- och gräsmarker.[1]
Arten gräver en eller flera underjordiska tunnelsystem i reviret som har 2 eller 3 ingångar. En kammare i boet fodras med gräs och träbitar. Individerna är aktiva på natten och de vistas sällan längre än 40 till 60 meter från boet. Kortsvansad fickspringmus håller ingen vinterdvala men den intar ibland ett stelt tillstånd (torpor). Födan utgörs av frön, gräs, torra stjälkar och gröna växtdelar som kompletteras med några insekter. Vätskebehovet täcks nästan helt med födan.[11]
Honor kan ha en eller sällan två kullar mellan våren och hösten. Dräktigheten varar cirka 28 dagar och sedan föds 2 till 6 ungar per kull. Ungar som blir självständiga byter päls. Några ungar som föds under våren kan ha en egen kull senare under året.[11]
Wikimedia Commons har media som rör Kortsvansad fickspringmus.
Wikispecies har information om Perognathus flavus.
Kortsvansad fickspringmus (Perognathus flavus) är en däggdjursart som beskrevs av Baird 1855. Perognathus flavus ingår i släktet fickspringmöss och familjen påsmöss. IUCN kategoriserar arten globalt som livskraftig.
Inga underarter finns listade i Catalogue of Life. Wilson & Reeder (2005) skiljer mellan 14 underarter.
Perognathus flavus blir med svans 95 till 118 mm lång, svanslängden är 41 till 58 mm och vikten varierar mellan 6 och 9 g. Bakfötterna är 12 till 18 mm långa. På ovansidan förekommer mjuk gulbrun päls med några svarta hår inblandade och ibland med en rosa skugga. Undersidan är vit och svansen är bara glest täckt med hår. En mer eller mindre tydlig ljus fläck finns vid varje öra.
Denna gnagare förekommer i centrala USA och i Mexiko. Utbredningsområdet sträcker sig från Wyoming och South Dakota till centrala Mexiko. En avskild population finns vid Kaliforniska viken. Arten vistas i halvtorra eller torra buske- och gräsmarker.
Arten gräver en eller flera underjordiska tunnelsystem i reviret som har 2 eller 3 ingångar. En kammare i boet fodras med gräs och träbitar. Individerna är aktiva på natten och de vistas sällan längre än 40 till 60 meter från boet. Kortsvansad fickspringmus håller ingen vinterdvala men den intar ibland ett stelt tillstånd (torpor). Födan utgörs av frön, gräs, torra stjälkar och gröna växtdelar som kompletteras med några insekter. Vätskebehovet täcks nästan helt med födan.
Honor kan ha en eller sällan två kullar mellan våren och hösten. Dräktigheten varar cirka 28 dagar och sedan föds 2 till 6 ungar per kull. Ungar som blir självständiga byter päls. Några ungar som föds under våren kan ha en egen kull senare under året.
Perognathus flavus là một loài động vật có vú trong họ Chuột kangaroo, bộ Gặm nhấm. Loài này được Baird mô tả năm 1855.[2]
Bài viết về một loài thuộc bộ Gặm nhấm này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Perognathus flavus là một loài động vật có vú trong họ Chuột kangaroo, bộ Gặm nhấm. Loài này được Baird mô tả năm 1855.
비단주머니생쥐(Perognathus flavus)는 주머니생쥐과에 속하는 설치류의 일종이다.[2] 멕시코 북부와 중부 지역, 미국 남서부 지역에서 발견된다. 국제 자연 보전 연맹(IUCN)이 "관심대상종"으로 분류하고 있으며, 크게 알려진 위협 요인은 없다. 씨앗, 식물과 견과류의 다육 부분을 먹으며, 뺨주머니로 먹이를 운반한다. 부드러운 흙을 가진 낮은 계곡 아래와 잡초와 관목 사이에서 서식하며, 모래를 파서 씨앗을 숨기고 묻는다. 다른 주머니쥐들 보다 가혹한 서식지 조건에서 더 견딜 수 있다.
