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Total plant cover and the height of vegetation determine protection from avian predators. Owls are common predators.
Known Predators:
A. azarae is a small mammal, averaging 19 g body mass. Weight varies seasonally, and is at its highest in the spring, decreasing over the following months and then increasing in the winter. The length of the head and body range between 75 and 150 mm, and the tail length is between 50 and 100 mm. These mice have short limbs, and have been described as “vole-like”. The fur is soft and olive brownish dorsally, with a yellowish white tint on the ventrum. The shoulders and nose are reddish brown, and there is a faint eye ring. A female A. azarae has 8 mammae.
A. azarae has a simple stomach. It has a basal metabolic rate of 1.18 to 2.26 cm^3 oxygen/hour. Its average body temperature is 36.14°C. A. azarae does not enter torpor.
Range mass: 10 to 45 g.
Average mass: 19 g.
Range length: 125 to 240 mm.
Range basal metabolic rate: 1.18 to 2.26 cm3.O2/g/hr.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes alike
A. azarae is short lived, and expected lifespan varies based upon the season of birth. Individuals born in the fall have a lifespan of 10 to 12 months, whereas those born in the spring have a lifespan of 7 to 8 months. A limiting factor in the survival these animals is shelter that is available during the winter. Even though it does not affect immigration rates, shelter does affect the survival of those exposed to the harsh weather. Other reasons for disparities are differences in body mass and physical conditions.
Typical lifespan
Status: wild: 7 to 12 months.
The species prefers borders because of the shelter they provide year-round. For example, in the low Delta of Buenos Aires, it prefers habitats that have high herbaceous cover. This is often because of the protection the cover provides from predators. Seasons also influence the areas it prefers. In the winter, the species prefers low and often temporarily flooded areas. However, in the summer and autumn, it prefers elevated roadsides that have been built along ditches. A. azarae is found at altitudes from sea level to approximately 5,000 meters.
Range elevation: 0 to 5000 m.
Habitat Regions: tropical ; terrestrial
Terrestrial Biomes: savanna or grassland
Wetlands: marsh
Other Habitat Features: agricultural
Akodon azarae is a neotropical species, and is distributed widely across central and southern America. The species range includes Bolivia, Paraguay, Uruguay, and the pampas grasslands from Central Argentina to Southern Brazil.
Biogeographic Regions: neotropical (Native )
A. azarae is a successful omnivore. Its diet consists of green vegetation, fruits, insects, and seeds. Since the species often moves with the change of seasons, its seasonal diet depends on the food that is available and its mother’s physiological condition (due to social learning earlier in its life). These mice ofen eat invertebrates and seeds in the summer, whereas in the winter they feed on plants. Also, females tend to eat more insects when they are available, increasing their of proteins needed to support pregnancy and lactation.
Animal Foods: insects; terrestrial non-insect arthropods
Plant Foods: leaves; seeds, grains, and nuts; fruit
Primary Diet: omnivore
Information pertaining to the communication used by A. azarae was not available. However, it is reasonable to assume that the species probably uses means of communication similar to those used by other small rodents. It is likely that there is some vocal communication. Tactile communication undoubtedly occurs between mothers and their offspring, as well as between mates. Some scent cues may be important to these animals. Visual signals, such as body postures, are often used by small mammals.
Perception Channels: visual ; tactile ; acoustic ; chemical
The IUCN Red List lists A. azarae as lower risk, least concern. The US Federal List and CITES indicate that A. azarae is not a particular conservation concern, and the species has no special status witht hese organizations.
US Federal List: no special status
CITES: no special status
IUCN Red List of Threatened Species: least concern
A. azarae is known to carry two hantaviruses: Maciel and Pergamino. These viruses can be transitted to humans, and can result in hemorrhagic fever with renal syndrome or hantavirus pulmonary syndrome. Hantavirus pulmonary syndrome is a cardiopulmonary disease that is very severe and often fatal. Larger and reproductively active males have higher rates of seroprevalence. This can be attributed to their larger home ranges in comparison to the females. This species can also be a crop pest.
Negative Impacts: injures humans (carries human disease); crop pest
There is no indication that this species has a positive effect on humans, and no information on this topic was available in the literature examined.
A. azarae is used as a host by a variety of mites. Some commensal species that use Azara’s grass mice are Androlaelaps fahrenholzi, Mysolaelaps microspinosus, and Androlaelaps rotundus. Studies have also found these mice to be infested by cuterebrid larvae.
Other information pertaining to its impact on the ecosystem was not available. However, because of its preference for seeds and fruits, one may presume that A. azarae disperses seeds in its surrounding area while feeding. It is also likely that it aerates the soil as it burrows, and affects populations of insects and plants upon which it feeds.
Ecosystem Impact: disperses seeds; soil aeration
Commensal/Parasitic Species:
A. azarae has a polygynous mating system. Even though female Pampean grassland mice mate with only one male during the mating season, a male mates with numerous females. T on reproductive success for males and females. Success for a female is determined by her ability to get green cover and find insects, whereas a male’s success depends upon his ability to copulate with females.
Mating System: polygynous
The breeding season for A. azarae lasts approximately 8 months, beginning in the South American spring (September or October) and ending in autumn (April or May). During the winter, there is a greater abundance of food. Because of this, a female that becomes pregnant during the winter is healthier than one that becomes pregnant during any other season. Although delayed implantation may occur, gestation usually lasts 22.7 days. A female typically produces a litter twice per year, with an average of 3.5 pups per litter. Litter size is positively correlated with the mother’s weight. Birth season also influences litter size. For litters that are conceived at the beginning or end of the mating season, the number of embryos tends to be lower than those conceived in the summer.
A newborn pup on average weighs 2.2 g. It is cared for and weaned by its mother at 14 to 15 days. pups reach sexual maturity and begin breeding at 2 months. A. azarae is generally reproductively active during the same season in which it is born. However, if a pup is not 2 months old by the last days of February or the first few days of March, it will not be mature enough to breed until the following breeding season.
Breeding interval: Azara's grass mice breed twice per year.
Breeding season: The breeding season lasts from September to May.
Average number of offspring: 3.5.
Average gestation period: 22.7 days.
Average weaning age: 14-15 days.
Average age at sexual or reproductive maturity (female): 2 months.
Average age at sexual or reproductive maturity (male): 2 months.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization ; viviparous ; delayed implantation
During pregnancy and lactation, a female expends a lot of energy--about 159-200% of her basal metabolic rate. She is the only parent that ensures growth and survival of her litter. While caring for the litter, a female teaches her pups which foods they should eat. Pups learn about the food their mother ingested by investigating her mouth.
Mothers actively control the sex ratio of their litters. They do this by committing infanticide of pups. In general, a mother that is in good condition will wean more males, whereas a mother in poor condition will wean more females. This is reflected in the male bias of summer offspring.
Parental Investment: no parental involvement; altricial ; precocial ; pre-fertilization (Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female, Protecting: Female); pre-independence (Provisioning: Female, Protecting: Female)
El mure de pacional pampeano,[1] o mure de Azara (Akodon azarae) ye una especie de royedor propiu de Sudamérica. Alcuéntrase n'Arxentina, Brasil, Paraguái, Uruguái.
Ye güéspede natural del virus Junín (tresmite la fiebre hemorráxico arxentina), xuntu col mure maicero, Calomys musculinus. Tamién porta'l Hantavirus Maciel.
Pesa en promediu 19 g, variando estacionalmente (el pesu ye máximu en primavera, amenorgando no siguientes meses y vuélvese a amontar pel iviernu). Mide ente 7-15 cm, y el llargor de la cola ente 5-10 cm. Tien pates curties; piel nidio, oliváceo amorenada dorsalmente, y un tinte mariellu blancuciu en banduyu; costazos y ñariz pardu acolorataos, y tien un borrosu aniellu en güeyos. La fema tien 8 mames. El machu ye bien polígamu. El so periodu reproductivu dura 8 meses: de setiembre a abril, y pel iviernu con máximu alimentu, recuperar de la crianza. Xesta 22,7 díes, pare dos veces al añu; 3,5 de camada con un pesu de 2,2 g. Algamen el maduror sexual a los 2 meses, y viven 10-12 meses.
El mure de pacional pampeano, o mure de Azara (Akodon azarae) ye una especie de royedor propiu de Sudamérica. Alcuéntrase n'Arxentina, Brasil, Paraguái, Uruguái.
Ye güéspede natural del virus Junín (tresmite la fiebre hemorráxico arxentina), xuntu col mure maicero, Calomys musculinus. Tamién porta'l Hantavirus Maciel.
Pesa en promediu 19 g, variando estacionalmente (el pesu ye máximu en primavera, amenorgando no siguientes meses y vuélvese a amontar pel iviernu). Mide ente 7-15 cm, y el llargor de la cola ente 5-10 cm. Tien pates curties; piel nidio, oliváceo amorenada dorsalmente, y un tinte mariellu blancuciu en banduyu; costazos y ñariz pardu acolorataos, y tien un borrosu aniellu en güeyos. La fema tien 8 mames. El machu ye bien polígamu. El so periodu reproductivu dura 8 meses: de setiembre a abril, y pel iviernu con máximu alimentu, recuperar de la crianza. Xesta 22,7 díes, pare dos veces al añu; 3,5 de camada con un pesu de 2,2 g. Algamen el maduror sexual a los 2 meses, y viven 10-12 meses.
El ratolí de pasturatge pampeà o ratolí d'Azara (Akodon azarae) és una espècie de rosegador endèmica de Sud-amèrica. Es troba a l'Argentina, el Brasil, el Paraguai i l'Uruguai.
És hoste natural del virus Junín (transmet la febre hemorràgica argentina), juntament amb el ratolí Calomys musculinus. També porta l'Hantavirus Maciel.
Pesa en mitjana 19 g, variant estacionalment (el pes és màxim a la primavera, minvant en el ssiguientes mesos i es torna a incrementar a l'hivern). Mesura entre 7-15 cm, i la longitud de la cua entre 5-10 cm. Té potes curtes; pell suau, olivàcia bronzejada dorsalment, i un tint groc blanques en ventre; espatlles i nas marró vermellosos, i té un borrós anell en ulls. La femella té 8 mames. El mascle és molt polígam. El seu període reproductiu dura 8 mesos: de setembre a abril, i a l'hivern amb màxim aliment, es recupera de la criança. Gesta 22,7 dies, pari dues vegades a l'any; 3,5 de ventrada amb un pes de 2,2 g. Assoleixen la maduresa sexual als 2 mesos, i viuen 10-12 mesos.
Akodon azarae, also known as Azara's akodont[2] or Azara's grass mouse,[1] is a rodent species from South America. It is found from southernmost Brazil through Paraguay and Uruguay into eastern Argentina.[2] It is named after Spanish naturalist Félix de Azara.
Akodon azarae, also known as Azara's akodont or Azara's grass mouse, is a rodent species from South America. It is found from southernmost Brazil through Paraguay and Uruguay into eastern Argentina. It is named after Spanish naturalist Félix de Azara.
Wikimedia Commons has media related to Akodon azarae.
El ratón de pastizal pampeano,[1] o ratón de Azara (Akodon azarae) es una especie de roedor propio de Sudamérica. Se la halla en Argentina, Brasil, Paraguay, Uruguay.
Es huésped natural del virus Junín (transmite la fiebre hemorrágica argentina), junto con el ratón maicero, Calomys musculinus. También porta el Hantavirus Maciel.
Pesa en promedio 19 g, variando estacionalmente (el peso es máximo en primavera, mermando en lo siguientes meses y se vuelve a incrementar en invierno). Mide entre 7-15 cm, y la longitud de la cola entre 5-10 cm. Tiene patas cortas; piel suave, oliváceo bronceada dorsalmente, y un tinte amarillo blancuzco en vientre; hombros y nariz pardo rojizos, y tiene un borroso anillo en ojos. La hembra tiene 8 mamas. El macho es muy polígamo. Su periodo reproductivo dura 8 meses: de septiembre a abril, y en invierno con máximo alimento, se recupera de la crianza. Gesta 22,7 días, pare dos veces al año; 3,5 de camada con un peso de 2,2 g. Alcanzan la madurez sexual a los 2 meses, y viven 10-12 meses.
El ratón de pastizal pampeano, o ratón de Azara (Akodon azarae) es una especie de roedor propio de Sudamérica. Se la halla en Argentina, Brasil, Paraguay, Uruguay.
Es huésped natural del virus Junín (transmite la fiebre hemorrágica argentina), junto con el ratón maicero, Calomys musculinus. También porta el Hantavirus Maciel.
Pesa en promedio 19 g, variando estacionalmente (el peso es máximo en primavera, mermando en lo siguientes meses y se vuelve a incrementar en invierno). Mide entre 7-15 cm, y la longitud de la cola entre 5-10 cm. Tiene patas cortas; piel suave, oliváceo bronceada dorsalmente, y un tinte amarillo blancuzco en vientre; hombros y nariz pardo rojizos, y tiene un borroso anillo en ojos. La hembra tiene 8 mamas. El macho es muy polígamo. Su periodo reproductivo dura 8 meses: de septiembre a abril, y en invierno con máximo alimento, se recupera de la crianza. Gesta 22,7 días, pare dos veces al año; 3,5 de camada con un peso de 2,2 g. Alcanzan la madurez sexual a los 2 meses, y viven 10-12 meses.
Akodon azarae Akodon generoko animalia da. Karraskarien barruko Sigmodontinae azpifamilia eta Cricetidae familian sailkatuta dago.
Akodon azarae Akodon generoko animalia da. Karraskarien barruko Sigmodontinae azpifamilia eta Cricetidae familian sailkatuta dago.
Akodon azarae est une espèce de rongeurs de la famille des Cricétidés qui se rencontre en Amérique du Sud.
Akodon azarae mesure entre 7,5 et 15 cm de long en comptant le corps et la tête. Sa queue mesure entre 5 et 10 cm. Il pèse 19 g en moyenne[3].
Ce rongeur est omnivore, il se nourrit de végétation verte, de fruits, d'insectes et de graines[3].
Cette espèce est présente au Paraguay, dans le Sud du Brésil, en Uruguay et en Argentine[4].
Akodon azarae est polygame. La saison de reproduction dure 8 mois, elle commence en été austral (septembre, octobre) et se finit en automne (avril, mai). La nourriture est plus abondante en hiver, c'est pourquoi les femelles en gestation durant l'hiver sont en meilleure santé que celles l'étant durant une autre saison. La femelle a deux portées par an avec une moyenne de 3,5 petits par portée. La mère s'occupe seule de ses petits. Elle peut contrôler le sex-ratio de ses portées[3].
Akodon azarae est une espèce de rongeurs de la famille des Cricétidés qui se rencontre en Amérique du Sud.
Akodon azarae is een zoogdier uit de familie van de Cricetidae. De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Johann Fischer von Waldheim in 1829. De soort komt voor in Zuid-Amerika in (delen van) Bolivia, Peru en Argentinië. Ze is genoemd naar de Spaanse natuurwetenschapper Félix de Azara (1746-1821) die van 1781 tot 1801 in Zuid-Amerika verbleef.
De soort wordt aangetroffen in Paraguay, Brazilië, Argentinië en Uruguay.
Bronnen, noten en/of referentiesAkodon azarae is een zoogdier uit de familie van de Cricetidae. De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Johann Fischer von Waldheim in 1829. De soort komt voor in Zuid-Amerika in (delen van) Bolivia, Peru en Argentinië. Ze is genoemd naar de Spaanse natuurwetenschapper Félix de Azara (1746-1821) die van 1781 tot 1801 in Zuid-Amerika verbleef.
Akodon azarae é uma espécie de roedor da família Cricetidae. Pode ser encontrada na Argentina, Uruguai, Paraguai e Brasil.
Akodon azarae é uma espécie de roedor da família Cricetidae. Pode ser encontrada na Argentina, Uruguai, Paraguai e Brasil.
Akodon azarae[2][3][4] är en däggdjursart som först beskrevs av Johann Baptist Fischer 1829. Akodon azarae ingår i släktet fältmöss, och familjen hamsterartade gnagare.[5][6] IUCN kategoriserar arten globalt som livskraftig.[1] Inga underarter finns listade.[5]
Denna fältmus förekommer i nordöstra Argentina, Paraguay, Uruguay och södra Brasilien. Habitatet utgörs av gräsmarker med buskar. Fortplantningstiden sträcker sig från oktober till maj. Efter cirka 25 dagar dräktighet föder honan 3 till 7 ungar.[1]
Wikimedia Commons har media som rör Akodon azarae.
Akodon azarae är en däggdjursart som först beskrevs av Johann Baptist Fischer 1829. Akodon azarae ingår i släktet fältmöss, och familjen hamsterartade gnagare. IUCN kategoriserar arten globalt som livskraftig. Inga underarter finns listade.
Denna fältmus förekommer i nordöstra Argentina, Paraguay, Uruguay och södra Brasilien. Habitatet utgörs av gräsmarker med buskar. Fortplantningstiden sträcker sig från oktober till maj. Efter cirka 25 dagar dräktighet föder honan 3 till 7 ungar.
Akodon azarae là một loài động vật có vú trong họ Cricetidae, bộ Gặm nhấm. Loài này được Fischer mô tả năm 1829.[2]
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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. Akodon azarae là một loài động vật có vú trong họ Cricetidae, bộ Gặm nhấm. Loài này được Fischer mô tả năm 1829.
아자라풀밭쥐(Akodon azarae)는 비단털쥐과에 속하는 남아메리카 설치류이다.[2] 브라질 남단부터 파라과이와 우루과이를 거쳐 아르헨티나 동부 지역에서 발견된다. 학명과 일반명은 스페인 박물학자 아자라(Félix de Azara)의 이름에서 유래했다.
다음은 2010년 자야(Jayat) 등의 연구에 기초한 계통 분류이다.[3]
남아메리카밭쥐속아자라풀밭쥐(Akodon azarae)는 비단털쥐과에 속하는 남아메리카 설치류이다. 브라질 남단부터 파라과이와 우루과이를 거쳐 아르헨티나 동부 지역에서 발견된다. 학명과 일반명은 스페인 박물학자 아자라(Félix de Azara)의 이름에서 유래했다.
