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Rudd's Mouse
Rudd's mouse or the white-bellied brush-furred rat (''Uranomys ruddi'') is the only member of the genus ''Uranomys''. This animal is closely related to the spiny mice, brush-furred mice, and the link rat. Description Head and body sizes range from 8.4-13.4 cm long. Tail length is 5.3-7.9 cm. Weight is 41-53 g. The hairs on the back of this species are stiff like the brush-furred mice, but not spiny as in '' Acomys''. The belly is white and feet are covered in white hairs. Incisors project anteriorly. Natural history The animal is known across a wide range in Africa, but is never common. They are usually taken in savannah habitat. Rudd's mouse is thought to be nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens .... It feeds predominantly on insects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guy Dollman
Captain John Guy Dollman BA, Linnean Society of London, FLS (4 September 1886 – 21 March 1942), known as Guy Dollman, was a British zoologist and Linnaean taxonomy, taxonomist. Dollman's tree mouse and Dollman's vlei rat are named after him. Life and work Elder son of the artist John Charles Dollman, Guy Dollman was born on 4 September 1886 and attended St Paul's School (London), St Paul's School, winning a scholarship to study at St John's College, Cambridge. In February 1907, while still a student, he was employed by the Department of Zoology at the British Museum (Natural History), where he spent most of his working life as Assistant Keeper of Mammals. In 1912, on an expedition to Vietnam, he discovered and named the Tonkin snub-nosed langur. He joined the British Army in 1915, and obtained a commission in the 19th London Regiment. He did not see active service abroad during World War I as he was injured in a bomb accident. He returned to the museum in 1919. He was a member ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiny Mice
The term spiny mouse refers to any species of rodent within the genus ''Acomys''. Similar in appearance to mice of the genus ''Mus'', spiny mice are small mammals with bare, scaled tails. However, their coats are endowed with unusually stiff guard hairs similar to the spines of a hedgehog; this trait is the source of the common name, ''spiny mouse''. Despite their anatomic similarity to members of the genus ''Mus'', genetic evidence suggests that the African spiny mice may be more closely related to gerbils than to common mice. Classification Genus ''Acomys'' – spiny mice *Western Saharan spiny mouse, ''Acomys airensis'' *Cairo spiny mouse, ''Acomys cahirinus'' *Chudeau's spiny mouse, ''Acomys chudeaui'' *Asia Minor spiny mouse, ''Acomys cilicicus'' * Gray spiny mouse, ''Acomys cineraceus'' *Eastern spiny mouse, ''Acomys dimidiatus'' *Fiery spiny mouse, ''Acomys ignitus'' *Johan's spiny mouse, ''Acomys johannis'' *Kemp's spiny mouse, ''Acomys kempi'' * Louise's spiny mou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brush-furred Mice
The brush-furred mice, genus ''Lophuromys'' are a group of rodents found in sub-Saharan Africa. They are members of the subfamily Deomyinae, a group only identifiable through molecular analysis. ''Lophuromys'' is also known as the brush-furred rats, harsh-furred rats or coarse-haired mice. Characteristics The brush-furred mice are so named due to the unique, stiff hairs that make up their pelage. The texture is similar to a soft brush. They are peculiar looking for several reasons. The coat varies depending on species, but ranges from tan to greenish greys and dark brown. Some species have an almost purplish tint to the pelage and others can be speckled. The underside is rusty, orange, brown, or cream-colored. They are chunky mice with relatively short legs. Most animals have noticeable scars, notched ears, or are missing part of their tails. The skin is delicate and the animals appear to use this as a predator avoidance technique. The tail breaks easily and may be lost so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Link Rat
The link rat (''Deomys ferrugineus'') is a species of rodent in the family Muridae. It is also known by the common name Congo forest mouse.Schlitter, D. & Kerbis Peterhans, J. 2008''Deomys ferrugineus''.The IUCN Red List of Threatened Species. Version 2014.3. Downloaded on 10 April 2015. It is native to central Africa. It is 12–14.5 cm long with a 15–21 cm long tail. It weighs 40-70 g. It has long legs and a pointed, narrow head, surmounted by enormous ears. It has a very long, bicoloured tail. The back and forehead are rich orange and brown and the underside is white. The rump hairs are stiff. The link rat is nocturnal and crepuscular. It prefers seasonally flooded forest floors between Cameroon and the Victoria Nile. It has a widespread but scattered distribution and is seldom common. It feeds mainly on insects, crustaceans, slugs and some fallen fruits, notably palm-nut husks. The link rat has traditionally been placed as a member of the subfamily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incisor
Incisors (from Latin ''incidere'', "to cut") are the front teeth present in most mammals. They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side, top and bottom). Opossums have 18, whereas armadillos have none. Structure Adult humans normally have eight incisors, two of each type. The types of incisor are: * maxillary central incisor (upper jaw, closest to the center of the lips) * maxillary lateral incisor (upper jaw, beside the maxillary central incisor) * mandibular central incisor (lower jaw, closest to the center of the lips) * mandibular lateral incisor (lower jaw, beside the mandibular central incisor) Children with a full set of deciduous teeth (primary teeth) also have eight incisors, named the same way as in permanent teeth. Young children may have from zero to eight incisors depending on the stage of their tooth eruption and tooth development. Typically, the mandibular central incisors erupt first, followed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Range (biology)
Species distribution —or species dispersion — is the manner in which a biological taxon is spatially arranged. The geographic limits of a particular taxon's distribution is its range, often represented as shaded areas on a map. Patterns of distribution change depending on the scale at which they are viewed, from the arrangement of individuals within a small family unit, to patterns within a population, or the distribution of the entire species as a whole (range). Species distribution is not to be confused with dispersal, which is the movement of individuals away from their region of origin or from a population center of high density. Range In biology, the range of a species is the geographical area within which that species can be found. Within that range, distribution is the general structure of the species population, while dispersion is the variation in its population density. Range is often described with the following qualities: * Sometimes a distinction is made betw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With billion people as of , it accounts for about of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, behind Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young population make Afr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savanna
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. According to '' Britannica'', there exists four savanna forms; ''savanna woodland'' where trees and shrubs form a light canopy, ''tree savanna'' with scattered trees and shrubs, ''shrub savanna'' with distributed shrubs, and ''grass savanna'' where trees and shrubs are mostly nonexistent.Smith, Jeremy M.B.. "savanna". Encyclopedia Britannica, 5 Sep. 2016, https://www.britannica.com/science/savanna/Environment. Accessed 17 September 2022. Savannas maintain an open canopy despite a high tree density. It is often believed that savannas feature widely spaced, scattered trees. However, in many savannas, tree densities are higher and trees are more regularly spaced than in for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nocturnal Animal
Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed senses of hearing, smell, and specially adapted eyesight. Some animals, such as cats and ferrets, have eyes that can adapt to both low-level and bright day levels of illumination (see metaturnal). Others, such as bushbabies and (some) bats, can function only at night. Many nocturnal creatures including tarsiers and some owls have large eyes in comparison with their body size to compensate for the lower light levels at night. More specifically, they have been found to have a larger cornea relative to their eye size than diurnal creatures to increase their : in the low-light conditions. Nocturnality helps wasps, such as ''Apoica flavissima'', avoid hunting in intense sunlight. Diurnal animals, including squirrels and songbirds, are active duri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insect
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of extant species is estimated at between six and ten million; In: potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans, which recent research has indicated insects are nested within. Nearly all insects hatch from eggs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deomyine Rodents
The subfamily Deomyinae consists of four genera of mouse-like rodents that were placed in the subfamilies Murinae and Dendromurinae until very recently. They are sometimes called the Acomyinae, particularly in references that antedate the discovery that the link rat, ''Deomys ferugineus'', is part of the clade. Deomyinae is the older name and therefore has priority over Acomyinae. Deomyines share no morphological characteristics that can be used to separate them from other muroids, though subtle aspects of the third upper molar have been suggested. This subfamily is united solely on the basis of shared genetic mutations. These conclusions have demonstrated good statistical support using nuclear and mitochondrial DNA, and DNA-DNA hybridization. Actually, all of the species in the subfamily share stiff hairs somewhere on their bodies. Because of the lack of physical characteristics supporting this group, it is very possible that the subfamily as it is currently recognize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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