Sigmodon arizonae is found in a wide variety of landscapes, but seem to prefer tall, dense grasslands, usually with ample water availability. They are generally found in areas supporting sedges, rushes, and cane grass-like plants. However, this species has been found within the arid upper tropical sub-zone where the dominant vegetation was savanna-woodland, pine and oak forest, deciduous tropical forest, palm forest, or mangrove swamp. These animals are often found near rivers and their floodplains, lakes and ponds, or drainage sloughs through agricultural fields and pastures. These animals can be found in different types of riparian vegetation, including stands of cattails and water hyacinths.
Range elevation: 0 to 1900 m.
Habitat Regions: temperate ; tropical ; terrestrial
Terrestrial Biomes: savanna or grassland ; forest ; scrub forest
Other Habitat Features: agricultural ; riparian ; estuarine
Sigmodon arizonae feeds mainly on grasses, but will also feed on citrus, other crops, some insects, and carrion.
Animal Foods: carrion ; insects
Plant Foods: leaves; seeds, grains, and nuts; fruit
Primary Diet: herbivore (Folivore )
Arizona cotton rats are likely a source of food for a variety of raptors and carnivores.
Cotton rats are used for laboratory experiments for polimyetitis and diptheria they are also used for food by some people.
Positive Impacts: food ; research and education
They can eat crops, cause diseases, and alter landscapes.
Negative Impacts: injures humans (carries human disease); crop pest
Sigmodon arizonae is not listed by IUCN or CITES. However, the species may have some conservation concerns. There are reported to be five distinct subspecies of S. arizonae. However, two of these are reported to be probably extinct, and the status of the others is not currently known.
US Federal List: no special status
CITES: no special status
IUCN Red List of Threatened Species: least concern
There is no information or data found on this subject for S. arizonae. However, it is safe to make some generalizations based on the fact that these animals are mammals. Most mammals are known to communicate with vocalizations. Tactile communication is important in the context of agonistic and reproductive behavior. Scent cues are often used, especially in marking territories, and identification of individuals. Often there are visual signals in communication, such as body posture.
Communication Channels: visual ; tactile ; acoustic ; chemical
Perception Channels: visual ; tactile ; acoustic ; chemical
There are five reported subspecies of S. arizonae. These include S. a. arizonae, and S. a. jacksoni, each of which were reported from only one locality in Central Arizona and which are probably extinct. There are also S. a. cienegae, which is found in central and sourth-eastern Arizona into Mexico, S. a. plenus, found along the Colorado River, and S. a. major, found through southern Sonoro and Sinaloa in Mexico.
Arizona cotton rats (Sigmodon arizonae) are found in the Southern U.S., through Mexico and Central America to the northern South America. They have been collected on coastal plains and the lower Pacific-facing slopes of the Sierra Nevada Occidental. They have also been found at moderate elevations in eastern Nayarit (Mesa del Nagar, 1300 m; Ocota Airstrip, 1900 m) but occur more often in the coastal plains of the western and central portion of their range.
Biogeographic Regions: nearctic (Native )
Longevity of S. arizonae has not been reported. However, S. hispidus individuals appear not to live much beyond a year, given the length of residence any individual has been known to have in an area.
These cotton rats greatly resemble their congeners, Sigmodon hispidus, and until recent studies of their chromosomes revealed that they were a distinct species, were lumped with S. hispidus.
Sigmodon arizonae is a large cotton rat, measuring 200 to 349 mm in length, of which 85 to 156 is contributed by the tail, and weighing between 125 and 211 g. This species can be distinguished from other cotton rats in the region, Sigmodon fulviventer and Sigmodon ochrognathus by its larger size and longer hind foot, which usually measures more than 34 mm. There are also differences in coloration of fur.
The pealge of these animals is not remarkable. They appear to be salt and pepper, brownish rats. Although they look like voles, they are much larger.
Range mass: 125 to 211 g.
Average mass: 172 g.
Range length: 200 to 349 mm.
Other Physical Features: endothermic ; bilateral symmetry
Although there is a paucity of information on this subject for S. arizonae, this species is likely preyed upon by a variety of raptors and carnivores. Given their apparent ability to reproduce quickly, they could be an important component of the diets of such animals, as are individuals from their sister species, S. hispidus.
There is little information to be found on this subject for S. arizonae, or other members of the genus.
Little is known about the reproduction of this species as separate from S. hispidus because until recently they were considered the same species. However, it is likely that what is known about reproduction in S. hispidus, the sister species of S. arizonae will apply reasonably well to the latter species.
Sigmodon hispidus is known to undergo a postpartum estrus. These animals copulate 3 to 6 hours after giving birth, with ovulation following between 6.5 and 12 hours after partuation.
Gestation in cotton rats lasts approximately 27 days. The litter size in S. hispidus ranges from 1 to 15. The neonates are well-developed for rodents, and are able to run at birth, although their eyes are not opened. Neonates weigh about 7.23 g. Growth is rapid, with the young gaining 1 or 2 g per day. Eyes typically open within 60 hours of birth. The young are weaned between 10 and 25 days.
In females of S. hispidus, conception took place at 40 days of age and estrus could occur from as early as 10 days of age. Sexual maturity in males, as determined by the presence of sperm in the epididymis, was always achieved by 3 months of age.
Breeding interval: The breeding interval of this species is not known, but related species can breed as often as once per month.
Breeding season: Although there are no reports for S. arizonae, related species have reproductive peaks in spring and autumn.
Range number of offspring: 1 to 15.
Average gestation period: 27 days.
Range weaning age: 10 to 25 days.
Range age at sexual or reproductive maturity (female): 10 to 40 days.
Range age at sexual or reproductive maturity (male): 3 (high) months.
Key Reproductive Features: iteroparous ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization ; viviparous ; post-partum estrous
Although no information is available for this species, it is likely that parental care is not extensive. The young are born well developed, and attain independence very early in life. Females probably provide the bulk of parental care, nursing the young for 10 to 25 days. It is likely that they also groom and protect the young. Male parental care has not been reported for this genus.
Parental Investment: no parental involvement; precocial ; pre-fertilization (Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female, Protecting: Female); pre-independence (Protecting: Female)
Sigmodon arizonae ye una especie de royedor de la familia Cricetidae.
Alcuéntrase en Méxicu y Estaos Xuníos.
Sigmodon arizonae ye una especie de royedor de la familia Cricetidae.
Sigmodon arizonae és una espècie de rosegador de la família dels cricètids. Viu al nord-oest de Mèxic i el sud-oest dels Estats Units. El seu hàbitat natural són els herbassars. Es creu que no hi ha cap amenaça significativa per a la supervivència d'aquesta espècie.[1] El seu nom específic, arizonae, significa 'd'Arizona' en llatí.
Sigmodon arizonae és una espècie de rosegador de la família dels cricètids. Viu al nord-oest de Mèxic i el sud-oest dels Estats Units. El seu hàbitat natural són els herbassars. Es creu que no hi ha cap amenaça significativa per a la supervivència d'aquesta espècie. El seu nom específic, arizonae, significa 'd'Arizona' en llatí.
Die Arizona-Baumwollratte (Sigmodon arizonae) ist ein in Nord- und Mittelamerika lebendes Nagetier (Rodentia) aus der Familie der Wühler (Cricetidae). Der Artname bezieht sich darauf, dass die Art unter anderem im US-Bundesstaat Arizona vorkommt.
Die Arizona-Baumwollratte zählt zu den großen Baumwollratten und erreicht eine Gesamtlänge von 247 bis 363 Millimetern, wovon der Schwanz eine Länge von 101 bis 145 Millimetern einnimmt.[1] Das Fell ist auf der Oberseite bräunlich-schwarz und auf der Unterseite silbrig-weißlich behaart. Das durchschnittliche Gewicht erwachsener Tiere beträgt rund 150 Gramm. Die Zahnformel lautet I1/1-C0/0-P0/0-M3/3 mit insgesamt 16 Zähnen.[1]
Aufgrund von Unterschieden in der chromosomalen Morphologie erfolgte im Jahr 1970 eine Abspaltung der Arizona-Baumwollratte von der etwas kleineren Sigmodon hispidus. Zusätzlich unterscheiden sich die beiden Arten in ihrer Schädelstruktur.[1]
Das Verbreitungsgebiet der Arizona-Baumwollratte erstreckt sich durch den Südwesten der USA sowie durch Teile Mexikos. Es werden folgende Unterarten geführt:
Die Art kommt in einer Vielzahl von Landschaften vor, bevorzugt jedoch hohe, dichte Graslandschaften, die Seggen und Binsen enthalten. Sie wurde ebenfalls in Savannenwäldern, Kiefern- und Eichenwäldern, Tropenwäldern, Palmenwäldern, Ufergebieten oder Mangrovensümpfen nachgewiesen.
Die tag- und nachtaktiven Arizona-Baumwollratten leben in becher- oder kugelförmigen Oberflächen- oder Erdnestern, die aus gewebten Gräsern angelegt werden. Die Weibchen können sich zu jedem Zeitraum im Jahr paaren. Nach einer Paarung werfen sie nach ca. 27 Tagen zwischen sechs und 17 Junge.[1] Diese sind für Nagetiere relativ gut entwickelt und können bei der Geburt bereits laufen, obwohl ihre Augen noch geschlossen sind. Die Augen öffnen sich normalerweise innerhalb von 60 Stunden nach der Geburt. Die Jungtiere werden vom Weibchen betreut und nach 10 bis 25 Tagen entwöhnt.
Arizona-Baumwollratten ernähren sich in erster Linie von Gräsern, zuweilen auch von Zitrusfrüchten, anderen Pflanzen, einigen Insekten und Aas.
Fressfeinde der Arizona-Baumwollratte sind eine Vielzahl von Raubvögeln und fleischfressenden Säugetieren. Aufgrund ihrer hohen Vermehrungsrate, stellen sie einen wichtigen Bestandteil zur Ernährung solcher Tiere dar.
Die Arizona-Baumwollratte wird von der Weltnaturschutzorganisation IUCN als „Least Concern = nicht gefährdet“ klassifiziert, dies auch aufgrund ihrer Fähigkeit, sich schnell und vielfach zu vermehren.[2] Aus dem gleichen Grund werden Baumwollratten bei Laborexperimenten eingesetzt.
Die Arizona-Baumwollratte (Sigmodon arizonae) ist ein in Nord- und Mittelamerika lebendes Nagetier (Rodentia) aus der Familie der Wühler (Cricetidae). Der Artname bezieht sich darauf, dass die Art unter anderem im US-Bundesstaat Arizona vorkommt.
The Arizona cotton rat or Colorado River cotton rat (Sigmodon arizonae) is a species of rodent in the family Cricetidae. It is found in Mexico and the United States.
The Arizona cotton rat has a typical rat-like appearance, and is sufficiently similar to the hispid cotton rat that it was considered to be part of the same species until 1970, when genetic analysis confirmed its distinct nature. It has bristly brownish fur over most of its body, with whitish underparts and grey feet. The scaly tail is dark in color, with very sparse fur. Adults range from 25 to 36 centimetres (9.8 to 14.2 in)
in total length, including the 10 to 15 centimetres (3.9 to 5.9 in) long tail, and weigh anything from 83 to 300 grams (2.9 to 10.6 oz). Males are slightly larger than females, but the two sexes are otherwise similar in appearance.[2]
Females have ten or twelve teats, suggesting a maximum litter size of around this number. Reproduction is thought to occur year-round.[2]
The Arizona cotton rat is found in southern and central Arizona, the extreme southwestern corner of New Mexico,[3] and in western Mexico from Sonora to Nayarit.[1] They live close to rivers, streams, and other sources of fresh water in semidesert, open grassland, or swampy habitats throughout the region. They rely particularly on areas of dense grassy vegetation.[4] Two of the five recognized subspecies are believed to have gone extinct during the twentieth century,[2] including the nominate subspecies, Sigmodon arizonae arizonae. Three subspecies therefore remain:
The Arizona cotton rat or Colorado River cotton rat (Sigmodon arizonae) is a species of rodent in the family Cricetidae. It is found in Mexico and the United States.
Sigmodon arizonae es una especie de roedor de la familia Cricetidae.[1]
Se encuentra en México y Estados Unidos.
Datos: Q1770032
Multimedia:
Especies: Sigmodon arizonae
Sigmodon arizonae es una especie de roedor de la familia Cricetidae.
Sigmodon arizonae Sigmodon generoko animalia da. Karraskarien barruko Sigmodontinae azpifamilia eta Cricetidae familian sailkatuta dago.
Sigmodon arizonae Sigmodon generoko animalia da. Karraskarien barruko Sigmodontinae azpifamilia eta Cricetidae familian sailkatuta dago.
Sigmodon arizonae is een zoogdier uit de familie van de Cricetidae. De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Mearns in 1890.
De soort komt voor in Mexico en de Verenigde Staten.
Bronnen, noten en/of referentiesSigmodon arizonae is een zoogdier uit de familie van de Cricetidae. De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Mearns in 1890.
Bawełniak arizoński[3] (Sigmodon arizonae) – gatunek gryzonia z rodziny chomikowatych (Cricetidae)[4].
Występuje na suchych terenach trawiastych od Arizony do Meksyku.
Bawełniaki arizońskie są bardzo liczne i często traktowane jako szkodniki. Zwykle żywią się roślinami i małymi owadami, lecz gdy ich zagęszczenie jest bardzo duże, zjadają również pisklęta i jaja przepióra wiginijskiego, a także raki i kraby.
Rozmnażają się szybko. Samica po raz pierwszy rodzi w wieku 10 tygodni. Jeden miot może liczyć do 12 młodych.
Bawełniak arizoński (Sigmodon arizonae) – gatunek gryzonia z rodziny chomikowatych (Cricetidae).
Sigmodon arizonae[2][3][4][5] är en däggdjursart som beskrevs av Edgar Alexander Mearns 1890. Sigmodon arizonae ingår i släktet bomullsråttor, och familjen hamsterartade gnagare.[6][7] IUCN kategoriserar arten globalt som livskraftig.[1]
Arten är med en absolut längd av 20 till 35 cm, inklusive en 8,5 till 15,5 cm lång svans, en stor medlem av släktet. Den väger 125 till 210 g. Även bakfötterna är med cirka 3,5 cm längd tydlig större än hos andra bomullsråttor som lever i samma region (Sigmodon fulviventer, Sigmodon ochrognathus). Pälsen på ovansidan har en prickig textur med bruna och vita hår. I kroppsformen påminner Sigmodon arizonae om en mycket stor sork.[8]
Denna bomullsråtta förekommer från Arizona till västra Mexiko. En avskild population finns i gränsområdet mellan Arizona och Kalifornien vid Coloradofloden. Tidigare fanns arten även i Nevada. Habitatet utgörs av områden med gräs som diken, strandlinjen av dammar och fältkanter.[1]
Individerna kan vara aktiva på dagen och på natten. De går främst på marken och har simförmåga. För övrigt antas att levnadssättet motsvarar de andra bomullsråttorna.[8]
Arten delas in i följande underarter:[6]
Wilson & Reeder (2005) listar S. a. plenus som synonym.[4]
Sigmodon arizonae är en däggdjursart som beskrevs av Edgar Alexander Mearns 1890. Sigmodon arizonae ingår i släktet bomullsråttor, och familjen hamsterartade gnagare. IUCN kategoriserar arten globalt som livskraftig.
Sigmodon arizonae là một loài động vật có vú trong họ Cricetidae, bộ Gặm nhấm. Loài này được Mearns mô tả năm 1890.[2]
Bài viết liên quan đến phân họ gặm nhấm Sigmodontinae này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Sigmodon arizonae là một loài động vật có vú trong họ Cricetidae, bộ Gặm nhấm. Loài này được Mearns mô tả năm 1890.
애리조나목화쥐(Sigmodon arizonae)는 비단털쥐과에 속하는 설치류이다.[2] 멕시코와 미국에서 발견된다.[1]
애리조나목화쥐는 전형적인 쥐의 겉모습을 닮았으며, 거친털목화쥐와 충분히 유사해서 1970년 유전자 분석을 통해 별도의 종으로 확인되기 전까지는 같은 종의 일부로 간주했다. 몸에 거친 갈색 털이 덮여 있으며, 하체는 희끄무레한 색을 띠고 발은 회색이다. 비늘털을 가진 꼬리는 진한 색을 띠고, 털이 아주 듬성듬성 나 있다. 성체의 전체 몸길이는 25~36cm이고, 꼬리는 길이는 10~15cm, 몸무게는 83~300g 정도이다. 수컷이 암컷보다 약간 크지만 겉모습은 암수가 거의 유사하다.[3] 암컷은 10~12개의 젖꼭지를 갖고 있고, 최대 젖꼭지 수만큼 새끼를 낳는 것으로 추정하고 있다. 연중 번식을 한다.[3]
애리조나목화쥐는 미국 애리조나주 남부와 중부, 뉴멕시코주 남서부 극단 구석,[4] 소노라 주]]에서 나야리트주 사이의 멕시코 서부에서 발견된다.[1] 분포 지역 전역의 준 사막지대와 개활지 초원 또는 습지 서식지의 강가와 냇가, 기타 민물과 가까운 곳에서 생활한다. 특히 풀이 울창하게 우거진 지역에 의존하다.[5]
5종의 알려진 아종 중에서 승명 아종 Sigmodon arizonae arizonae을 포함하여 2종은 20세기에 멸종된 것으로 간주되고 있다.[3] 현존하는 3종의 아종은 다음과 같다.
