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Dipodid
Jerboas () are the members of the family Dipodidae. They are hopping desert rodents found throughout North Africa and Asia. They tend to live in hot deserts. When chased, jerboas can run at up to . Some species are preyed on by little owls (''Athene noctua'') in central Asia. Most species of jerboas have excellent hearing that they use to avoid becoming the prey of nocturnal predators. The typical lifespan of a jerboa is around 2–3 years. Taxonomy Jerboas, as previously defined, were thought to be paraphyletic, with the jumping mice (Zapodidae) and birch mice (Sminthidae) also being classified in the family Dipodidae. However, phylogenetic analysis split all three as distinct families, leaving just the jerboas in Dipodidae and revealing them to be a monophyletic group. This animal has a body length (including the head) of between , with an additional of tail, which is always longer than the full body. Jerboa dental records reveal a slow increase in crown heights, which cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scarturus Tetradactyla
The four-toed jerboa (''Scarturus tetradactylus'') is a rodent of the family Dipodidae and genus ''Scarturus'' that has four digits. Four-toed jerboas are native to Egypt and Libya. They live in coastal salt marshes and dry deserts. Physical appearance Similar to the other jerboas in the genera ''Allactaga'' and ''Scarturus'', the four-toed jerboa are small hopping rodents with large ears and a long tail, with a black band near the white, feathery tip. The tail assists and serves as support when the jerboa is standing upright. They have long hind feet and short forelegs. The pelt of the four-toed jerboa is velvety in texture and the upper-parts are speckled black and orange, the rump orange, and the sides gray. The four-toed jerboa hind-limbs have one digit less than other jerboas in the subfamily Allactaginae, but one more hind digit than other jerboas. The extra digit is smaller in size and nonfunctional compared to the other three digits. Nutrition Emerging at night, the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allactaginae
Allactaginae is a subfamily of rodents. Classification Subfamily Allactaginae *Genus ''Allactaga'' **Subgenus ''Allactaga'' *** Iranian jerboa, ''Allactaga firouzi'' *** Hotson's jerboa, ''Allactaga hotsoni'' *** Great jerboa, ''Allactaga major'' *** Severtzov's jerboa, ''Allactaga severtzovi'' **Subgenus '' Orientallactaga'' *** Balikun jerboa, ''Allactaga balikunica'' *** Gobi jerboa, ''Allactaga bullata'' *** Mongolian five-toed jerboa, ''Allactaga sibirica'' *Genus '' Allactodipus'' ** Bobrinski's jerboa, ''Allactodipus bobrinskii'' *Genus '' Pygeretmus'', fat-tailed jerboas ** Lesser fat-tailed jerboa, ''Pygeretmus platyurus'' ** Dwarf fat-tailed jerboa, ''Pygeretmus pumilio'' ** Greater fat-tailed jerboa, ''Pygeretmus shitkovi'' *Genus ''Scarturus'' ** Small five-toed jerboa, ''Scarturus elater'' ** Euphrates jerboa, ''Scarturus euphratica'' ** Four-toed jerboa, ''Scarturus tetradactyla'' ** Vinogradov's jerboa, ''Scarturus vinogradovi'' **Williams' jerboa Williams's je ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dipodinae
Dipodinae is a subfamily of Dipodidae Jerboas () are the members of the family Dipodidae. They are hopping desert rodents found throughout North Africa and Asia. They tend to live in hot deserts. When chased, jerboas can run at up to . Some species are preyed on by little owls ('' .... Classification Subfamily Dipodinae *Tribe Dipodini **Genus '' Dipus'' *** Northern three-toed jerboa, ''Dipus sagitta'' **Genus '' Eremodipus'' *** Lichtenstein's jerboa, ''Eremodipus lichtensteini'' **Genus '' Jaculus'' *** Blanford's jerboa, ''Jaculus blanfordi'' *** Lesser Egyptian jerboa, ''Jaculus jaculus'' *** Greater Egyptian jerboa, ''Jaculus orientalis'' *** Thaler's jerboa, ''Jaculus thaleri'' **Genus '' Stylodipus'', three-toed Jerboas *** Andrews's three-toed jerboa, ''Stylodipus andrewsi'' *** Mongolian three-toed jerboa, ''Stylodipus sungorus'' *** Thick-tailed three-toed jerboa, ''Stylodipus telum'' *Tribe Paradipodini **Genus '' Paradipus'' *** Comb-toed jerboa, ''Paradipus c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchoreutinae
The long-eared jerboa (''Euchoreutes naso'') is a nocturnal mouse-like rodent with a long tail, long hind legs for jumping, and exceptionally large ears. It is distinct enough that authorities consider it to be the only member of both its genus, ''Euchoreutes'', and subfamily, Euchoreutinae. Long-eared jerboas are found in the Palearctic ecozone. The specific palearctic ecozone areas they are found in are southernmost Mongolia to the Takla-Makan Desert, Mengxin, Aerijin Mountain, and Qinghai-Tibet Plateau regions of north western China. Long-eared jerboas in most cases are nocturnal, The long-eared jerboa's fur according to the book ''100 animals to see before they die'' "is reddish yellow to pale russet with white underparts." Very little is known about the species. Description The long-eared jerboa's head and body length measures while its tail is double this size, between . Like its disproportionately long tail, its hind feet are also large, helping it to jump high, measuri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sminthidae
Sminthidae is a family of mouse-like jumping rodents. They are represented by only one extant genus, '' Sicista'', represented by 19 species found throughout most of Eurasia, from central Europe east to Siberia, and south to southern China. However, they were much more diverse and had a much wider range in prehistory, having multiple genera and being found not only in Eurasia but also throughout North America, where they existed up to the early Pleistocene. They have a well-attested fossil record which dates as far back as the early Oligocene. They were formerly classified as the subfamily Sicistinae in the family Dipodidae alongside the jerboas and jumping mice, but phylogenetic evidence supports all three of these belonging to distinct families, thus leaving only the jerboas in Dipodidae. Extant species * Genus '' Sicista'' ** Armenian birch mouse ''Sicista armenica'' ** Northern birch mouse, ''Sicista betulina'' ** Caucasian birch mouse, ''Sicista caucasica'' ** Lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardiocraniinae
Cardiocraniinae is a subfamily of rodents in the family Dipodidae, named by the Russian zoologist Boris Stepanovich Vinogradov (1891–1958) in 1925. These jumping rodents are small mammals, less than 20 cm long. Taxonomy *Genus ''Cardiocranius'' **Five-toed pygmy jerboa, ''Cardiocranius paradoxus'' *Genus ''Salpingotulus'' **Baluchistan pygmy jerboa, ''Salpingotulus michaelis'' *Genus ''Salpingotus'', pygmy jerboas **Subgenus ''Anguistodontus'' ***Thick-tailed pygmy jerboa, ''Salpingotus crassicauda'' **Subgenus ''Prosalpingotus'' ***Heptner's pygmy jerboa, ''Salpingotus heptneri'' ***Pale pygmy jerboa, ''Salpingotus pallidus'' ***Thomas's pygmy jerboa, ''Salpingotus thomasi'' **Subgenus ''Salpingotus (subgenus), Salpingotus'' *** Kozlov's pygmy jerboa, ''Salpingotus kozlovi'' References * Dipodidae Mammal subfamilies {{rodent-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zapodidae
Zapodidae, the jumping mice, is a family of mouse-like rodents in North America and China. Although mouse-like in general appearance, these rodents are distinguished by their elongated hind limbs, and, typically, by the presence of four pairs of cheek-teeth in each jaw. There are five toes to all the feet, but the first in the fore-feet is rudimentary, and furnished with a flat nail. The tail makes up about 60% of its body length and is used to gain balance while jumping. The cheeks have pouches. The Sichuan jumping "yeti" mouse ('' Eozapus setchuanus'') from China can be identified by the ‘Y’ marking on its belly. Jumping mice live in wooded areas, grassy fields and alpine meadows. When disturbed, they can leap eight to ten feet at a time, diminishing to three to four as they widen the gap between them and any pursuer. They are nocturnal and generally live alone. Nests are often found in clefts of rocks, among timber, or in hollow trees. Typically, they will have two to thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodent
Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia ( ), which are characterized by a single pair of continuously growing incisors in each of the upper and Mandible, lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/ricochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include Mouse, mice, rats, squirrels, prairie dogs, porcupines, beavers, Cavia, guinea pigs, and hamsters. Once included wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birch Mouse
Birch mice (genus ''Sicista'') are small jumping rodents that resemble mice with long, tufted tails and very long hind legs, allowing for remarkable leaps. They are the only extant members of the family Sminthidae. They are native to Eurasian forests and steppes. All variants possess a long tail of of length and weigh about . Head and body length of and hind foot length of . The animal's skin color is light brown or dark-brown to brownish yellow on the upper side and paler on the underside, but generally brownish. Birch mice have a vast geographic distribution in that they inhabit a wide variety of habitats, from semiarid areas to subalpine meadows. Although they have a diverse region of areas, their molecular and anatomical markers have claimed that Birch mice originated from Central Asia. Birch mice have a systematic of the genus of ''Sicista'', they look at the male reproductive organs and cytogenic data. Species Nineteen species are listed by the American Society of Mamma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desert Sand (color)
Desert sand is a very light and very weakly saturated reddish yellow colour which corresponds specifically to the coloration of sand. It may also be regarded as a deep tone of beige. Desert sand was used by General Motors, along with "Rosewood (color), rosewood", as a paint color for their early Cadillacs. In 1998, ''desert sand'' was made into a Crayola crayon colour. The color shown matches the palest of the three colors in the 3-color Desert Camouflage Uniform of United States Armed Forces, which in 1990 began to replace the 6-color Desert Battle Dress Uniform. Six Color Variations of Desert Sand Sandy brown As its name suggests, ''sandy brown'' is a shade of brown which is similar to the color of some sands. Earth yellow ''Earth yellow'' is one of the twelve official camouflage colors of the United States Army. Sand Sand is a color that resembles the color of beach sand. In fact, another name for this color is beach, an alternate color name in use for this c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ecological niche. Thus "habitat" is a species-specific term, fundamentally different from concepts such as Biophysical environment, environment or vegetation assemblages, for which the term "habitat-type" is more appropriate. The physical factors may include (for example): soil, moisture, range of temperature, and Luminous intensity, light intensity. Biotic index, Biotic factors include the availability of food and the presence or absence of Predation, predators. Every species has particular habitat requirements, habitat generalist species are able to thrive in a wide array of environmental conditions while habitat specialist species require a very limited set of factors to survive. The habitat of a species is not necessarily found in a ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptic Colouration
Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the battledress of a modern soldier, and the leaf-mimic katydid's wings. A third approach, motion dazzle, confuses the observer with a conspicuous pattern, making the object visible but momentarily harder to locate. The majority of camouflage methods aim for crypsis, often through a general resemblance to the background, high contrast disruptive coloration, eliminating shadow, and countershading. In the open ocean, where there is no background, the principal methods of camouflage are transparency, silvering, and countershading, while the bioluminescence, ability to produce light is among other things used for counter-illumination on the undersides of cephalopods such as squid. Some animals, such as chameleons and octopuses, are capable of Active ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
