Leggadina forresti és una espècie de rosegador de la família dels múrids. És endèmic del centre d'Austràlia. Es tracta d'un animal nocturn. El seu hàbitat natural són les zones àrides, incloent-hi herbassars, planes argiloses i matollars. Es creu que no hi ha cap amenaça significativa per a la supervivència d'aquesta espècie.[1] Aquest tàxon fou anomenat en honor de l'explorador i polític australià John Forrest.[2]
Leggadina forresti és una espècie de rosegador de la família dels múrids. És endèmic del centre d'Austràlia. Es tracta d'un animal nocturn. El seu hàbitat natural són les zones àrides, incloent-hi herbassars, planes argiloses i matollars. Es creu que no hi ha cap amenaça significativa per a la supervivència d'aquesta espècie. Aquest tàxon fou anomenat en honor de l'explorador i polític australià John Forrest.
The Forrest's mouse (Leggadina forresti), or desert short-tailed mouse, is a small species of rodent in the family Muridae. It is a widespread but sparsely distributed species found across arid and semi-arid inland Australia, commonly found in tussock grassland, chenopod shrubland, and mulga or savannah woodlands.
The Forrest's mouse is a small mouse weighing between 15–25 grams (0.53–0.88 oz),[2] but recorded to 30 grams (1.1 oz).[3] Short, thick tail that is distinctly less than (60-70%) of the combined head and body length.[2][4] Body is thickset with a broad, blunt muzzle,[2] and relatively small ears and eyes.[4] Upperparts are a thick, lustrous and short fur of pale yellow brown or greyish fawn, with a pencilling of darker hairs, and small white patches behind the ears.[2][4] There is a strong demarcation to white under the lower jaw, chin and feet, with the sparsely haired tail grey above and pale grey below, and the ears rounded and pinkish-grey.[2]
Oldfield Thomas first identified Leggadina forresti in 1906 from a specimen collected at Alexandria Station in the Northern Territory.[5] The genus Leggadina contains two species, both found in Australia including Leggadina forresti and the tropical short-tailed mouse, or Lakeland Downs mouse Leggadina lakedownensis, which is found in moist tussock grassland and tropical savannah of coastal northern Australia.[2]
Several synonyms exist for this species:[6]
Widespread but sparsely distributed across much of arid and semi-arid inland Australia, from eastern Western Australia to Rolleston in central Queensland, the Barkly Tableland in the Northern Territory to Cockburn, South Australia.[2] In New South Wales, has been recorded in Sturt National Park, Tibooburra, and as sub-fossil remains at Mutawintji National Park.[4]
The species was previously listed as Lower Risk/near threatened in 1996 on the IUCN Red List of Threatened Species, but was reassessed in 2008 as a species of least concern.[1] The Forrest's mouse is not listed under the Australian Environment Protection and Biodiversity Conservation Act 1999, but is listed as Vulnerable in NSW on Schedule 2 of the Threatened Species Conservation Act 1995.
A nocturnal and terrestrial animal, the Forrest's mouse shelters during the day in a grass nest in shallow burrows (possibly at the base of spinifex tussocks), and also in cracks in the soil.[2][4]
Although little is known on the population dynamics and social organisation of the species, it is thought they are a solitary animal, occurring in low densities regardless of habitat suitability.[5] Individuals have been recorded entering a state of torpor in both captivity and the wild, and longevity is estimated to be 1.5 to 2 years.[7]
Habitats are varied and include: riparian Coolabah forest, tussock grassland, stony saltbush plains, mulga and savannah woodlands, chenopod shrubland and sandy ridges,[4] and cracking clay pans.[8]
The reproductive rate of Forrest's mouse peaks during winter and spring, with some breeding occurring in autumn,[7] and thought to be related to rainfall.[2] Litter size is usually of three to four young, with a gestation period of 35 days, and a weaning period of 28 days,[9] when the young reach around 9 grams (0.32 oz) in weight.[5] It is unclear as to the age at which individuals reach sexual maturity.[7]
The Forrest's mouse has a varied diet, and is considered an omnivore. Food items identified include seeds, green plant stems and leaves, arthropods including beetles and spiders, and fungi.[2][7][10] Assessment of stomach contents concluded the major food item was seed (47%), followed by arthropods at 27%, with the remainder consisting of stem and leaf material.[11] It is generally thought that the Forrest's mouse does not rely on standing water for drinking, as it obtains sufficient moisture from its diet in a similar fashion to other well adapted desert rodents.[7]
The Forrest's mouse is subject to predation by both introduced animals and native predators. Both feral cats Felus catus and the European red fox Vulpes vulpes have been recorded as preying on the Forrest's mouse in Queensland,[12] which has been identified as a contributing factor in the decline of native rodents.[7] The barn owl Tyto alba is known to prey on the species in South Australia,[13] and other birds of prey recorded consuming the Forrest's mouse include the letter-winged kite Elanus scriptus in the Simpson Desert.[14] In assessing the risk of dingo Canis lupus dingo predation to threatened vertebrates in western NSW after re-introduction, it was found that the Forrest's mouse faced a high risk of predation from dingoes, based on bodyweight, behaviour and habitat.[15]
Heavy grazing and the trampling of habitat by domestic stock, feral goats, rabbits and pigs has been identified as a threat to the Forrest's mouse.[4] Grazing by stock affects native rodents through the removal of shrubs and grasses that provide food and shelter, and powder and compact the topsoil, which makes burrowing difficult or impossible.[7] This can also make the Forrest's mouse more vulnerable to predation, and reduces the ability to move between isolated habitats.[4]
Predation by feral cats and foxes is considered a threat to the Forrest's mouse, and exotic species such as the house mouse Mus domesticus have the ability to sustain the population of predators.[7] The house mouse, along with other introduced herbivores compete with the Forrest's mouse for food resources and habitat.[4]
The loss of habitat through inappropriate or altered fire regimes is recognised as a threatening process for native rodents, however it is unclear as to whether the Forrest's mouse is adversely affected by current fire regimes, or what requirements are needed in terms of fire history.[7]
The use of 1080 poison(sodium monofluoroacetate) in pest control has the potential to poison the Forrest's mouse through the ingestion of baits,[4][7] and the use of pesticides for the control of locusts may also represent a threat.[7]
The introduction of standing water through farm dams and irrigation schemes has the potential to attract potential predators and competitors of the Forrest's mouse,[4] and serve as focal point for herbivores and the modification of vegetation through grazing.[7]
A loss of habitat through the clearing of trees, shrubs and grasses, the removal of ground debris and loss of hollows have also been identified as a threat to the survival of the Forrest's mouse.[4]
The Forrest's mouse (Leggadina forresti), or desert short-tailed mouse, is a small species of rodent in the family Muridae. It is a widespread but sparsely distributed species found across arid and semi-arid inland Australia, commonly found in tussock grassland, chenopod shrubland, and mulga or savannah woodlands.
Leggadina forresti Leggadina generoko animalia da. Karraskarien barruko Murinae azpifamilia eta Muridae familian sailkatuta dago.
Leggadina forresti Leggadina generoko animalia da. Karraskarien barruko Murinae azpifamilia eta Muridae familian sailkatuta dago.
Leggadina forresti (Thomas, 1906) è un roditore della famiglia dei Muridi endemico dell'Australia.[1][2]
Roditore di piccole dimensioni, con la lunghezza della testa e del corpo tra 70 e 100 mm, la lunghezza della coda tra 45 e 70 mm, la lunghezza del piede tra 14 e 19 mm, la lunghezza delle orecchie tra 11 e 14 mm e un peso fino a 25 g.[3]
Le parti superiori sono bruno-giallastre o fulvo-grigiastre, cosparse di peli più scuri, mentre le parti inferiori sono bianche. La linea di demarcazione lungo i fianchi è netta. Sono presenti delle chiazze biancastre sotto gli occhi. Il muso è largo e smussato. Le orecchie sono piccole e arrotondate. La coda è più corta della testa e del corpo, è tozza, grigia sopra e più chiara sotto, ricoperta di pochi peli sparsi e con circa 25 anelli di scaglie per centimetro. Il cariotipo è 2n=48 FN=52.
È una specie terricola e notturna. Si rifugia in nidi d'erba all'interno di tane e cunicoli.
Si nutre di semi, parti vegetali e artropodi.
Le femmine danno alla luce 3-4 piccoli alla volta, principalmente dopo le stagioni piovose.
Questa specie è diffusa nelle zone aride e semi-aride dell'Australia centrale, dal Bacino del Lago Eyre fino al Territorio del Nord.
Vive in praterie, pianure argillose e boscaglie basse. Talvolta è stato osservato anche in savane alberate, praterie di Spinifex, colline rocciose e dune di sabbia.
Sono state riconosciute 4 sottospecie:
La IUCN Red List, considerato il vasto areale, la popolazione numerosa e l'assenza di reali minacce, classifica L.forresti come specie a rischio minimo (LC).[1]
Leggadina forresti is een knaagdier uit het geslacht Leggadina dat voorkomt in Australië. Zijn verspreidingsgebied beslaat het het uiterste oosten van West-Australië, de zuidelijke helft van het Noordelijk Territorium, West-Queensland, het uiterste noordwesten van Nieuw-Zuid-Wales en het noorden van Zuid-Australië. Daar leeft hij in allerlei droge bos- of graslandhabitats. Populaties uit de Pilbara (Noordwest-West-Australië) en het nabijgelegen Thevenard Island worden nu tot de andere soort van het geslacht, L. lakedownensis, gerekend.
De rug is licht geelbruin, de onderkant wit, met een scherpe scheiding. De korte, spaarzaam behaarde staart is van boven grijs en van onder lichtgrijs. De bek is breed. De oren zijn klein, rond en rozegrijs van kleur. De kop-romplengte bedraagt 70 tot 100 mm, de staartlengte 45 tot 70 mm, de achtervoetlengte 14 tot 19 mm, de oorlengte 11 tot 14 mm en het gewicht 15 tot 25 gram. Vrouwtjes hebben 0+2=4 mammae.
De soort is 's nachts actief; hij slaapt in een nest gemaakt van gras in een hol. Hij eet zaden, wortels en geleedpotigen. Als er regen valt paart hij; per worp worden er drie tot vier jongen geboren.
Leggadina forresti is een knaagdier uit het geslacht Leggadina dat voorkomt in Australië. Zijn verspreidingsgebied beslaat het het uiterste oosten van West-Australië, de zuidelijke helft van het Noordelijk Territorium, West-Queensland, het uiterste noordwesten van Nieuw-Zuid-Wales en het noorden van Zuid-Australië. Daar leeft hij in allerlei droge bos- of graslandhabitats. Populaties uit de Pilbara (Noordwest-West-Australië) en het nabijgelegen Thevenard Island worden nu tot de andere soort van het geslacht, L. lakedownensis, gerekend.
De rug is licht geelbruin, de onderkant wit, met een scherpe scheiding. De korte, spaarzaam behaarde staart is van boven grijs en van onder lichtgrijs. De bek is breed. De oren zijn klein, rond en rozegrijs van kleur. De kop-romplengte bedraagt 70 tot 100 mm, de staartlengte 45 tot 70 mm, de achtervoetlengte 14 tot 19 mm, de oorlengte 11 tot 14 mm en het gewicht 15 tot 25 gram. Vrouwtjes hebben 0+2=4 mammae.
De soort is 's nachts actief; hij slaapt in een nest gemaakt van gras in een hol. Hij eet zaden, wortels en geleedpotigen. Als er regen valt paart hij; per worp worden er drie tot vier jongen geboren.
Leggadina forresti é uma espécie de roedor da família Muridae, podendo ser encontrada apenas na Austrália.
Os seus habitats naturais são: campos de gramíneas subtropicais ou tropicais húmidos de baixa altitude.[1]
Leggadina forresti é uma espécie de roedor da família Muridae, podendo ser encontrada apenas na Austrália.
Os seus habitats naturais são: campos de gramíneas subtropicais ou tropicais húmidos de baixa altitude.
Leggadina forresti[2] är en däggdjursart som först beskrevs av Thomas 1906. Leggadina forresti ingår i släktet Leggadina och familjen råttdjur.[3][4] IUCN kategoriserar arten globalt som livskraftig.[1] Inga underarter finns listade i Catalogue of Life.[3]
Denna gnagare förekommer i centrala Australien. Den lever i halvöknar, i stäpper och i torra buskskogar. Ibland besöks områden med några träd. Individerna är aktiva på natten. Fortplantningen sker bara efter regn. Per kull föds tre eller fyra ungar.[1]
Wikispecies har information om Leggadina forresti.
Leggadina forresti är en däggdjursart som först beskrevs av Thomas 1906. Leggadina forresti ingår i släktet Leggadina och familjen råttdjur. IUCN kategoriserar arten globalt som livskraftig. Inga underarter finns listade i Catalogue of Life.
Denna gnagare förekommer i centrala Australien. Den lever i halvöknar, i stäpper och i torra buskskogar. Ibland besöks områden med några träd. Individerna är aktiva på natten. Fortplantningen sker bara efter regn. Per kull föds tre eller fyra ungar.
Leggadina forresti là một loài động vật có vú trong họ Chuột, bộ Gặm nhấm. Loài này được Thomas mô tả năm 1906.[2]
Leggadina forresti là một loài động vật có vú trong họ Chuột, bộ Gặm nhấm. Loài này được Thomas mô tả năm 1906.
포레스트쥐 또는 사막짧은꼬리쥐(Leggadina forresti)는 쥐과에 속하는 설치류의 일종이다.[2] 널리 분포하지만, 오스트레일리아 내륙의 건조와 반건조 지역에서 발견되는 드물게 분포하는 종으로 덤불 초원, 명아주속 관목 지대, 멀가 덤불 또는 사바나 산림 지역에서 주로 발견된다.
포레스트쥐는 작은 설치류로 몸무게는 15~25g이지만,[3] 30g이 발견되기도 한다.[4] 짧고 두꺼운 꼬리를 갖고 있으며, 길이가 머리부터 몸까지 길이의 60~70% 미만이다.[3][5] 몸은 뭉툭한 주둥이와 함께 넓고 두꺼우며,[3] 비교적 작은 귀와 눈을 갖고 있다.[5] 상체는 진한 황갈색을 띠고, 연하고 누르스름하거나 회색빛 황갈색의 짧은 털을 갖고 있으며 귀 뒤에 작고 흰 반점이 있다.[3][5] 아래턱과 턱, 발 아래에 흰색으로 강하게 구분이 나타난다. 드문 드문 털이 있는 꼬리 윗면은 회색을 아랫면은 연한 회색을 띠고, 귀는 둥글고 분홍색빛의 회색이다.[3]
토마스(Oldfield Thomas)가 1906년 노던 준주 알렉산드리아 역에서 수집한 표본으로부터 Leggadina forresti라는 학명으로 처음 명명했다.[6] 오스트레일리아작은쥐속(Leggadina)은 오스트레일리아에서 발견되는 두 종, 포레스트쥐(Leggadina forresti)와 오스트레일리아 북부 해안의 습윤 덤불 초원과 열대 사바나 지역에서 발견되는 열대짧은꼬리쥐(또는 레이크랜드다운스쥐, Leggadina lakedownensis)를 포함하고 있다.[3]
여러개의 이명이 있다.[7]
널리 분포하지만 웨스턴오스트레일리아 주 동부 지역부터 퀸즐랜드 주 중부 롤스톤과 노던 준주의 바크리 테이블랜드, 사우스오스트레일리아 주 콕번까지의 오스트레일리아 내륙 대부분의 건조 및 반건조 지역에 듬성 듬성 분포한다.[3] 뉴사우스웨일스 주 스튜어트 국립공원과 티부부라에서 발견되며, 무타윈트지 국립공원에서 아화석 유골이 발견되었다.[5]
이전에는 1996년 IUCN 적색 목록에서 저위험/준취약종으로 분류되었지만, 2008년에 "관심대상종"으로 바뀌었다.[1] 포레스트쥐는 오스트레일리아의 1999년 환경보호 및 생물다양성 보존에 관한 법률의 보호를 받는 종에 들어가지 않지만, 1995년 뉴사우스웨일스 주의 위협 종 보호법 별지 2의 취약종으로 등록되어 있다.
