The giant kangaroo rat is the largest of all kangaroo rats and has a body length ranging from 15 to 20 cm and a tail length of 18 to 21.5 cm. Unlike many other kangaroo rats, D. ingens possesses five toes on each hind foot, a white stripe running across its hindquarters, and a white belly. It also has a distinctive tail that is dark colored on the top and bottom with white lines on both sides.
Other Physical Features: endothermic ; bilateral symmetry
Scrub desert and piedmont are the basic habitats of giant kangaroo rats. They prefer relatively flat homogenous terrain with shrubs and rocks being almost totally absent. Typical habitat is stretches of easily excavated sandy loam covered with annual grasses and herbs.
Terrestrial Biomes: desert or dune ; chaparral
The giant kangaroo rat has an extremely small range limited to the west-central region of the U.S. state of California. Specifically, it is currently found only as far north and west as Fresno County and as far east and south as San Luis Obispo and Bakersfield Counties
Biogeographic Regions: nearctic (Native )
Giant kangaroo rats are granivorous and prefer to eat the seeds and green parts of native desert plants. They are also known to eat grain and the seeds of commercially grown plants if fields are nearby. Food is cured in shallow pits or piles on the ground called 'haystacks.' It is then stored in the central cave of their burrow. They extract all the water they need from these sources.
While providing no direct economic benefits, giant kangaroo rats help maintain the desert habitat in which they live by feeding on and collecting seeds. Kangaroo rats in general were popularized in Walt Disney's film, The Living Desert. As an easily recognizable species of kangaroo rat, the giant kangaroo rat possesses a degree of charisma and is seen as adding aesthetic value to the region.
The burrow complexes of adults create very soft heaps of dirt that can collapse under the pressure exerted by livestock or a human. Because of this, sheep and cattle tend to avoid areas containing burrows; therefore, land inhabited by the rats is deemed less valuable to ranchers.
The giant kangaroo rat was designated an endangered species by the California Department of Fish and Game (CDFG) in the early 1980s and is currently restricted to about 2% (under 17,000 hectares) of its historic range. The CDFG, together with the Nature Conservancy and the U.S. Bureau of Land Management, manages the Carrizo Plain Natural Area, which contains ninety percent of remaining habitat. Although protected in this area, giant kangaroo rats will likely be eliminated from all other areas unless habitat loss caused by urban and agricultural development in central California is stopped.
US Federal List: endangered
CITES: no special status
IUCN Red List of Threatened Species: endangered
Perception Channels: tactile ; chemical
Water taken in by giant kangaroo rats from food is stored not only in their kidneys but in their urinary bladders. Their kidneys are extremely efficient and can concentrate urine to the highest degree known among North American mammals.
Breeding takes place in late winter or early spring. Gestation is 28 to 32 days in length. Anywhere from one to six young are born in a burrow in the spring, three being average. The young are cared for by their mothers and fathers and are weaned in 15 to 25 days. They reach sexual maturity in 60 to 84 days. They then leave the burrow and seek new territories within the colony to dig burrows of their own. Giant kangaroo rats have been known to live up to 9.8 years in the wild.
Key Reproductive Features: gonochoric/gonochoristic/dioecious (sexes separate); sexual
Dipodomys ingens és una espècie de rosegador de la família dels heteròmids. És endèmica de Califòrnia (Estats Units). S'alimenta principalment de llavors, tot i que també consumeix herba i insectes. El seu hàbitat natural són les planes. Està amenaçada per la transformació del seu entorn per a usos agrícoles, industrials i urbans, juntament amb l'ús de rodenticides.[1]
Dipodomys ingens és una espècie de rosegador de la família dels heteròmids. És endèmica de Califòrnia (Estats Units). S'alimenta principalment de llavors, tot i que també consumeix herba i insectes. El seu hàbitat natural són les planes. Està amenaçada per la transformació del seu entorn per a usos agrícoles, industrials i urbans, juntament amb l'ús de rodenticides.
The giant kangaroo rat (Dipodomys ingens) is an endangered species of heteromyid rodent endemic to California.[2]
The giant kangaroo rat, is the largest of over 20 species of kangaroo rats, which are small members of the rodent family, measuring about 15 cm (5.9 in) in length, including its long, tufted tail. It is tan or brown in color. Like other kangaroo rats it has a large head and large eyes, and long, strong hind leg with which helps it hop at high speeds.
The giant kangaroo rat has been recently added to the endangered species list due to its habitat being severely reduced. Data was collected on its foraging behavior and social structure. Traps baited kangaroo rats with oats in them for four weeks in the summer. The animals were captured, tagged with tracking devices and set free. Results show that significantly fewer males were captured. This could have been due to the time of year at which the experiment was tested. Females were found to be more social. Studies also showed that the kangaroo rat's den is the area in which the animal spends the most time.
The giant kangaroo rat lives on dry, sandy grasslands and digs burrows in loose soil. It lives in colonies, and the individuals communicate with each other by drumming their feet on the ground. These foot thumping signals range from single, short thumps to long, drawn out “footrolls” that can average over 100 drums at 18 drums per second. These audible signals serve both as a warning of approaching danger, as a territorial communication, and to communicate mating status.
Kangaroo rats are primarily seed eaters, but also eat green plants and insects. Most giant kangaroo rats gather seeds when they are available and store them for consumption later. The seeds are put into small pits on the surface of the soil and scattered over the home range of the individual. The small pits only hold the content of the two cheek pouches.
In the spring and summer, individuals generally spend less than two hours of the night foraging above ground. They are very territorial and never leave their den for more than 15 minutes per day. The giant kangaroo rat then stores the seeds in a larder for later eating and gives birth to a litter of 1 to 8 babies, with an average of 3 per litter. It communicates with potential mates by sand-bathing, where the giant kangaroo rat rubs its sides in sand, leaving behind a scent to attract mates. They live for only 2–4 years.
This species was declared endangered on both the federal and California state levels in the 1980s. It inhabits less than a mere 2% of its original range and can now be found only in isolated areas west of the San Joaquin Valley, including the Carrizo Plain, the Elkhorn Plain, and the Kettleman Hills. The giant kangaroo rat, like many other rodent species, lost much of its habitat as the Central Valley fell under agricultural use. Much information still needs to be obtained regarding their basic biology and compatibility with various land uses before clear directives can be made. Besides some projects currently underway in the Carrizo Plain National Monument, studies need to be conducted on populations whose range overlaps with private lands. Recovery of the giant kangaroo rat can be achieved when the three largest populations in eastern Kern County, Carrizo Plain Natural Area, and the Panoche Region along with the populations in the Kettleman Hills, San Juan Creek Valley and Cuyama Valley are protected and managed appropriately.[3] In a unique case, a giant kangaroo rat population was found during the construction of the second track at Buttonwillow Raceway Park. The track design was modified and a protected habitat was created in the middle of the new track.[4]
The mating of the giant kangaroo rat is seasonal. During the summer, male rats go out of their normal territories and mate with neighboring female rats. During the winter, the males stay in their original burrow.
Endangered Dipodomys ingens populations have become more dispersed and less numerous over time. This can have major side effects to the genetic diversity of the species. D. ingens populations only cover about 3% of the territory they historically occupied. Agricultural development has severely impacted the habitats of this rodent, and restricted it to several small isolated areas. Because of this, D. ingens is at risk for genetic drift and inbreeding within smaller populations. D. ingens lives in metapopulation structures due to their habitats being taken over by humans. They are divided into several small remnant populations that are unable to disperse over larger areas because of topographical limitations. This is a larger problem for northern subpopulations of than those in the south. D. ingens is believed to be polygynous (one male, multiple females) but a common ratio between male and female partners has not yet been found. The study showed that translocation was a successful method for increasing diversity and population size of D. ingens.
In 1987, the United States Fish and Wildlife Service declared that the Giant Kangaroo Rat is an endangered specie. One of the main reasons why the Giant Kangaroo Rat is listed as an endangered specie is because there homes were being destroyed. The main reason why the habitats of the Giant Kangaroo Rat have been destroyed is because of irrigated agriculture. Specifically in the San Joaquin Valley in the state of California, the population over the past 100 years of the Giant Kangaroo Rat has decreased as much as over 90%. To try to rescue the Giant Kangaroo Rat from going extinct, efforts are being done to help restore the Giant Kangaroo Rat's habitats and population.
In the early 2010's, a collaboration was set up by the Bitter Creek, CSU Stanislaus's Endangered Species Recovery Program, and the Endangered Species Recovery Program. What the restoration plan was that to help feed more and grow more plants in Bitter Creek because they found out that there isn't much food for giant kangaroo rats to eat in the area. The Small Mammal Monitoring Project was born right after the plan for giant kangaroo rats restoration was established, which the project helps with having a flowing ecosystem for the small mammals in Bitter Creek.[5]
A group of scientists from years 2001 to 2017 decided to collect and making samples in the San Joaquin Desert on the habitats of the giant kangaroo rat. What they found is from just over 17,000km2 area they studied at the San Joaquin Desert, they identify only just under 700km2 of the area they researched, is a high-quality habitat for the giant kangaroo rats.[6]
The Nature Conservancy (TNC), have been working in the San Joaquin Valley to help with the endangered species and tracking and researching there status and habitats. In the mid 2000s, the TNC began sending groups of young researchers have been sent to do to extensive research on the giant kangaroo rats. The research on the species is about keeping tracks on its habitats and looking out on the population. The research is still currently going on and has expanded to throughout the San Joaquin Valley.[7]
The giant kangaroo rat (Dipodomys ingens) is an endangered species of heteromyid rodent endemic to California.
Dipodomys ingens Dipodomys generoko animalia da. Karraskarien barruko Dipodomyinae azpifamilia eta Heteromyidae familian sailkatuta dago.
Dipodomys ingens Dipodomys generoko animalia da. Karraskarien barruko Dipodomyinae azpifamilia eta Heteromyidae familian sailkatuta dago.
Dipodomys ingens
Le Rat-kangourou géant, de nom scientifique Dipodomys ingens, est une espèce de Rongeurs de la famille des Heteromyidae. C'est un petit mammifère qui fait partie des rats-kangourous d'Amérique.
L'espèce a été décrite pour la première fois en 1904 par un zoologiste américain, Clinton Hart Merriam (1855-1942).
C'est le plus grand des rats-kangourous, qui peut mesurer jusqu'à 15 cm sans compter la queue. Il vit en colonies dans des terriers qu'il creuse dans les terres meubles et communique en frappant ses pattes contre le sol, notamment pour avertir ses congénères d'un danger. Cette espèce est essentiellement nocturne.
La période de reproduction se situe entre janvier et mai, avec la naissance de un à sept petits, avec une portée moyenne de trois. Son espérance de vie est de deux à quatre ans.
Il est en danger d'extinction. Bien que protégé par les lois californiennes, il ne survit plus que dans la région centre-ouest de la Californie et, du fait de la mise en culture de son habitat d'origine, n'occupe plus que 2 % de la superficie d'origine de celui-ci.
Dipodomys ingens
Le Rat-kangourou géant, de nom scientifique Dipodomys ingens, est une espèce de Rongeurs de la famille des Heteromyidae. C'est un petit mammifère qui fait partie des rats-kangourous d'Amérique.
L'espèce a été décrite pour la première fois en 1904 par un zoologiste américain, Clinton Hart Merriam (1855-1942).
De reuzenkangoeroerat (Dipodomys ingens) is een zoogdier uit de familie van de wangzakmuizen (Heteromyidae). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Merriam in 1904.
De soort komt voor in de Verenigde Staten.
Bronnen, noten en/of referentiesDe reuzenkangoeroerat (Dipodomys ingens) is een zoogdier uit de familie van de wangzakmuizen (Heteromyidae). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Merriam in 1904.
Multimedia w Wikimedia Commons Szczuroskoczek olbrzymi[3] (Dipodomys ingens) - gatunek ssaka z rodziny karłomyszowatych występujący w centralno-zachodniej części stanu Kalifornia.
Jest to największy przedstawiciel swojej rodziny - długość ciała wynosi 15-20 cm. Umaszczenie żółtobrązowe, z białym brzuchem i białymi pasami na zadzie. Ogon ciemniejszy, biało paskowany, mierzy 18-21,5 cm.
Szczuroskoczki olbrzymie żyją w koloniach liczących 5-50 osobników. Prowadzą nocny tryb życia, dzień przesypiają w wykopanych przez siebie norach. Są silnie terytorialne - samce niemali nigdy nie oddalają się od swoich nor, samice raz w roku podróżują w poszukiwaniu partnera. Jak pozostałe szczuroskoczki poruszają się w charakterystyczny sposób - skaczą na silnych tylnych nogach, podobnie do kangurów. Są roślinożercami - żywią się ziarnami i zielonymi częściami roślin.
Zwierzęta rozmnażają się późną zimą i wczesną wiosną. Samica po trwającej 28-32 dni ciąży rodzi jedno do sześciu młodych, które następnie karmi mlekiem przez 15-25 dni. Szczuroskoczki osiągają dojrzałość płciową w wieku 60-84 dni. Zwierzęta dożywają 10 lat.
Gatunek został zakwalifikowany jako zagrożony wyginięciem z powodu skrajnie małego obszaru występowania. Cała populacja żyje na obszarze ok. 17 000 hektarów, co stanowi 2% jego pierwotnego obszaru występowania. Największym zagrożeniem dla nich jest rozrost miast i terenów wiejskich Kalifornii.
Szczuroskoczek olbrzymi (Dipodomys ingens) - gatunek ssaka z rodziny karłomyszowatych występujący w centralno-zachodniej części stanu Kalifornia.
Dipodomys ingens[2][3][4][5][6][7][8] är en däggdjursart som först beskrevs av Clinton Hart Merriam 1904. Dipodomys ingens ingår i släktet känguruspringmöss, och familjen påsmöss.[9][10] IUCN kategoriserar arten globalt som starkt hotad.[1] Inga underarter finns listade i Catalogue of Life.[9]
Med en kroppslängd av 15 till 20 cm och en svanslängd av 18 till 21,5 cm är arten störst i släktet. I motsats till andra känguruspringmöss finns fem tår vid bakfötterna. Pälsen är på ovansidan sandfärgad eller lite mörkare brun och på buken vit. Kännetecknande är svansen som är mörk på toppen och på undersidan medan sidorna är vita.[11]
Denna gnagare förekommer i Kalifornien (USA) i delar av Central Valley. Regionen ligger 120 till 870 meter över havet. Habitatet utgörs av halvöknar med några buskar. Efter regntider växer gräs och örter i utbredningsområdet. I vissa delar av regionen etablerades betesmarker med frodigare växtlighet.[1]
Individerna behöver mjuk jord där de kan gräva sina bon. De lever främst ensamma och har ett 60 till 350 m² stort revir. Dipodomys ingens är aktiv på natten och äter främst frön samt några växtdelar och troligen insekter.[1]
Wikimedia Commons har media som rör Dipodomys ingens.
Wikispecies har information om Dipodomys ingens.
Dipodomys ingens är en däggdjursart som först beskrevs av Clinton Hart Merriam 1904. Dipodomys ingens ingår i släktet känguruspringmöss, och familjen påsmöss. IUCN kategoriserar arten globalt som starkt hotad. Inga underarter finns listade i Catalogue of Life.
Med en kroppslängd av 15 till 20 cm och en svanslängd av 18 till 21,5 cm är arten störst i släktet. I motsats till andra känguruspringmöss finns fem tår vid bakfötterna. Pälsen är på ovansidan sandfärgad eller lite mörkare brun och på buken vit. Kännetecknande är svansen som är mörk på toppen och på undersidan medan sidorna är vita.
Denna gnagare förekommer i Kalifornien (USA) i delar av Central Valley. Regionen ligger 120 till 870 meter över havet. Habitatet utgörs av halvöknar med några buskar. Efter regntider växer gräs och örter i utbredningsområdet. I vissa delar av regionen etablerades betesmarker med frodigare växtlighet.
Individerna behöver mjuk jord där de kan gräva sina bon. De lever främst ensamma och har ett 60 till 350 m² stort revir. Dipodomys ingens är aktiv på natten och äter främst frön samt några växtdelar och troligen insekter.
Перебуває на межі вимирання.
Найбільший з кенгурових стрибунів, досягає в довжину 15 см (не рахуючи довгого хвоста з чубчиком). Зазвичай світло-коричневого кольору. Велика голова і очі, довгі і сильні задні лапки (як у тушкана або кенгуру, звідси назва), за рахунок яких може швидко і високо підстрибувати.
Chuột cống kangaroo khổng lồ (danh pháp hai phần: Dipodomys ingens) là một loài chim thuộc Chi Chuột hai chân. Đây là loài đặc hữu California. Chuột cống kangaroo khổng lồ là một trong hơn 20 loài chuột, chuột túi là thành viên nhỏ của họ động vật gặm nhấm. Chuột cống kangaroo khổng lồ là lớn nhất của những con chuột cống kangaroo, có chiều dài 15 cm, không bao gồm đuôi dài có búi. Nó có màu nâu vàng hoặc màu nâu. Giống như các con chuột cống kangaroo khác, nó có một cái đầu lớn và đôi mắt lớn và mạnh mẽ, đôi chân dài chân sau đó nó có thể nhảy ở tốc độ cao.
Chuột cống kangaroo khổng lồ sinh sống ở các đồng cỏ khô, cát và đào hang hốc trong đất xốp. Nó sống ở thuộc địa, và các cá nhân giao tiếp với nhau bằng tiếng động do đôi chân của nó nện trên mặt đất. Tín hiệu của tiếng đạp chân này từ một tiếng ngắn, đơn đến tiếng dài với 100 nhịp với tốc độ 18 nhịp mỗi giây. Những tín hiệu âm thanh có vai trò như là một cảnh báo nguy hiểm đến gần, hoặc như là một tuyên bố chủ quyền lãnh thổ, và thông báo tình trạng giao phối.
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. Chuột cống kangaroo khổng lồ (danh pháp hai phần: Dipodomys ingens) là một loài chim thuộc Chi Chuột hai chân. Đây là loài đặc hữu California. Chuột cống kangaroo khổng lồ là một trong hơn 20 loài chuột, chuột túi là thành viên nhỏ của họ động vật gặm nhấm. Chuột cống kangaroo khổng lồ là lớn nhất của những con chuột cống kangaroo, có chiều dài 15 cm, không bao gồm đuôi dài có búi. Nó có màu nâu vàng hoặc màu nâu. Giống như các con chuột cống kangaroo khác, nó có một cái đầu lớn và đôi mắt lớn và mạnh mẽ, đôi chân dài chân sau đó nó có thể nhảy ở tốc độ cao.
Chuột cống kangaroo khổng lồ sinh sống ở các đồng cỏ khô, cát và đào hang hốc trong đất xốp. Nó sống ở thuộc địa, và các cá nhân giao tiếp với nhau bằng tiếng động do đôi chân của nó nện trên mặt đất. Tín hiệu của tiếng đạp chân này từ một tiếng ngắn, đơn đến tiếng dài với 100 nhịp với tốc độ 18 nhịp mỗi giây. Những tín hiệu âm thanh có vai trò như là một cảnh báo nguy hiểm đến gần, hoặc như là một tuyên bố chủ quyền lãnh thổ, và thông báo tình trạng giao phối.
Гигантский кенгуровый прыгун[1] (лат. Dipodomys ingens) — грызун, эндемик Калифорнии, США. Находится на грани вымирания. Самый крупный из кенгуровых прыгунов, достигает в длину 15 см (не считая длинного хвоста с кисточкой). Обычно светло-коричневого цвета. Большая голова и глаза, длинные и сильные задние лапки (как у тушканчиков или кенгуру, отсюда название), за счёт которых может быстро и высоко подпрыгивать.
Живёт в колониях, роет норы в рыхлой земле. Ведёт, прежде всего, ночной образ жизни. Питается семенами, растениями и насекомыми, создаёт запас семян на период засухи.
Сезон размножения длится с января по май. В помёте обычно 3 детёныша. Продолжительность жизни составляет 2—4 года.
Международная Красная книга
자이언트캥거루쥐(Dipodomys ingens)는 주머니생쥐과에 속하는 설치류의 일종이다.[2] 미국 캘리포니아주의 토착종이다.[1]
자이언트캥거루쥐는 20여 종 이상의 캥거루쥐 중에서 가장 크고, 붓꼬리 형태를 지닌 꼬리를 포함하여 몸 길이는 약 15cm 정도이다. 털 색은 황갈색 또는 갈색을 띤다. 다른 캥거루쥐류처럼 큰 머리와 큰 눈 그리고 빠른 속도로 도약을 할 수 있는 길고 강한 뒷다리를 갖고 있다. 서식지가 심각하게 감소하고 있기 때문에 최근에 "멸종위기종"으로 추가되었다.
