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Sun Squirrel
Sun squirrels (genus ''Heliosciurus''), form a taxon of squirrels under the subfamily Xerinae and the tribe Protoxerini. They are only found in sub-Saharan Africa. Either the habit of basking in the sun on tree branches or the tail being commonly used as a sunshade gave this group its common name. Sun squirrels have been implicated in the spread of human monkeypox in the Democratic Republic of the Congo. There are six species in the genus: * Gambian sun squirrel, '' Heliosciurus gambianus'' * Mutable sun squirrel, '' Heliosciurus mutabilis'' * Small sun squirrel, '' Heliosciurus punctatus'' * Red-legged sun squirrel, '' Heliosciurus rufobrachium'' * Ruwenzori sun squirrel, '' Heliosciurus ruwenzorii'' * Zanj sun squirrel, '' Heliosciurus undulatus'' References *Nowak, Ronald M. (1999), ''Walker's Mammals of the World'', 6th edition, Baltimore and London: The Johns Hopkins University Press The Johns Hopkins University Press (also referred to as JHU Press or JHUP) is the pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing Great American Interchang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xerinae
The Xerinae comprise a subfamily of squirrels, many of which are highly terrestrial. It includes the tribes Marmotini (marmots, chipmunks, prairie dogs, and other Holarctic ground squirrels), Xerini (African and some Eurasian ground squirrels), and Protoxerini (African tree squirrels).Thorington, R. W. and R. S. Hoffmann (2005). "Family Sciuridae". pp. 754–818 in Wilson, E. D. and Reeder, D. M. (eds.), Mammal Species of the World: A Taxonomic and Geographic Reference', Vol. 2. Johns Hopkins University Press, Baltimore. Taxonomy Tribe Xerini six species of ground squirrels in five genera, occurring in Africa and Asia. :''Atlantoxerus'' :'' Euxerus'' :''Geosciurus'' :''Spermophilopsis'' :'' Xerus'' Tribe Protoxerini thirty species of tree squirrels in six genera, occurring in Africa. :''Epixerus'' :'' Funisciurus'' :'' Heliosciurus'' :''Myosciurus'' :'' Paraxerus'' :'' Protoxerus'' Tribe Marmotini ground squirrels in fifteen genera, occurring world wide. Includes the prairie d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Johns Hopkins University Press
The Johns Hopkins University Press (also referred to as JHU Press or JHUP) is the publishing division of Johns Hopkins University. It was founded in 1878 and is the oldest continuously running university press in the United States. The press publishes books and journals, and operates other divisions including fulfillment and electronic databases. Its headquarters are in Charles Village, Baltimore. In 2017, after the retirement of Kathleen Keane who is credited with modernizing JHU Press for the digital age, the university appointed new director Barbara Pope. Overview Daniel Coit Gilman, the first president of the Johns Hopkins University, inaugurated the press in 1878. The press began as the university's Publication Agency, publishing the ''American Journal of Mathematics'' in its first year and the ''American Chemical Journal'' in its second. It published its first book, ''Sidney Lanier: A Memorial Tribute'', in 1881 to honor the poet who was one of the university's first writers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London
London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a major settlement for two millennia. The City of London, its ancient core and financial centre, was founded by the Romans as '' Londinium'' and retains its medieval boundaries.See also: Independent city § National capitals The City of Westminster, to the west of the City of London, has for centuries hosted the national government and parliament. Since the 19th century, the name "London" has also referred to the metropolis around this core, historically split between the counties of Middlesex, Essex, Surrey, Kent, and Hertfordshire, which largely comprises Greater London, governed by the Greater London Authority.The Greater London Authority consists of the Mayor of London and the London Assembly. The London Mayor is distinguished fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltimore
Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was designated an independent city by the Constitution of Maryland in 1851, and today is the most populous independent city in the United States. As of 2021, the population of the Baltimore metropolitan area was estimated to be 2,838,327, making it the 20th largest metropolitan area in the country. Baltimore is located about north northeast of Washington, D.C., making it a principal city in the Washington–Baltimore combined statistical area (CSA), the third-largest CSA in the nation, with a 2021 estimated population of 9,946,526. Prior to European colonization, the Baltimore region was used as hunting grounds by the Susquehannock Native Americans, who were primarily settled further northwest than where the city was later built. Colonist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Democratic Republic Of The Congo
The Democratic Republic of the Congo (french: République démocratique du Congo (RDC), colloquially "La RDC" ), informally Congo-Kinshasa, DR Congo, the DRC, the DROC, or the Congo, and formerly and also colloquially Zaire, is a country in Central Africa. It is bordered to the northwest by the Republic of the Congo, to the north by the Central African Republic, to the northeast by South Sudan, to the east by Uganda, Rwanda, and Burundi, and by Tanzania (across Lake Tanganyika), to the south and southeast by Zambia, to the southwest by Angola, and to the west by the South Atlantic Ocean and the Cabinda exclave of Angola. By area, it is the second-largest country in Africa and the 11th-largest in the world. With a population of around 108 million, the Democratic Republic of the Congo is the most populous officially Francophone country in the world. The national capital and largest city is Kinshasa, which is also the nation's economic center. Centered on the Cong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monkeypox
Monkeypox (also called mpox by the WHO) is an infectious viral disease that can occur in humans and some other animals. Symptoms include fever, swollen lymph nodes, and a rash that forms blisters and then crusts over. The time from exposure to onset of symptoms ranges from five to twenty-one days. The duration of symptoms is typically two to four weeks. There may be mild symptoms, and it may occur without any symptoms being apparent. The classic presentation of fever and muscle pains, followed by swollen glands, with lesions all at the same stage, has not been found to be common to all outbreaks. Cases may be severe, especially in children, pregnant women or people with suppressed immune systems. The disease is caused by the monkeypox virus, a zoonotic virus in the genus ''Orthopoxvirus''. The variola virus, the causative agent of smallpox, is also in this genus. Of the two types in humans, cladeII (formerly West African clade) causes a less severe disease than the Central A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sunning (behaviour)
Sunning or basking, sometimes also known as sunbathing, is a thermoregulatory or comfort behaviour used by animals, especially birds, reptiles, and insects, to help raise their body temperature, reduce the energy needed for temperature maintenance or to provide comfort. They may also have additional functions of ridding animals of ectoparasites, bacteria, or excess moisture. Birds Birds adopt special postures when sunning, these may include spreading out their feathers, flattening their body on soil, showing either their upper parts to the sun or facing the sun. Some authors separate the behaviours into sun-basking and sun-exposure - the former term used when the behaviour is strictly thermoregulatory in function while the latter term may be more appropriate if the behaviour serves functions other than raising body temperature. In some species, the sunbathing posture is adopted in very hot weather and the birds sometimes stay in close contact with hot soil. Birds may fluff up th ... [...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] |
Protoxerini
The Protoxerini comprise a tribe of squirrels found in Africa. The 30 species in six genera are:Thorington, R. W. and R. S. Hoffmann. 2005. Family Sciuridae. Pp 754–818 in Mammal Species of the World A Taxonomic and Geographic Reference. Johns Hopkins University Press, Baltimore. *''Epixerus'' (monotypic) - Ebian's palm squirrel *'' Funisciurus'' (nine species) - African striped squirrels *'' Heliosciurus'' (six species) - sun squirrels *''Myosciurus The African pygmy squirrel (''Myosciurus pumilio'') is a species of rodent in the family Sciuridae. It is monotypic within the genus ''Myosciurus''. It is found in tropical rainforests in Cameroon, the Republic of the Congo, Equatorial Guinea, ...'' (monotypic) - African pygmy squirrel *'' Paraxerus'' (11 species) - African bush squirrels *'' Protoxerus'' (two species) - African giant squirrels References Protoxerini Mammal tribes {{Squirrel-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squirrel
Squirrels are members of the family Sciuridae, a family that includes small or medium-size rodents. The squirrel family includes tree squirrels, ground squirrels (including chipmunks and prairie dogs, among others), and flying squirrels. Squirrels are indigenous to the Americas, Eurasia, and Africa, and were introduced by humans to Australia. The earliest known fossilized squirrels date from the Eocene epoch, and among other living rodent families, the squirrels are most closely related to the mountain beaver and to the dormice. Etymology The word ''squirrel'', first attested in 1327, comes from the Anglo-Norman which is from the Old French , the reflex of a Latin word , which was taken from the Ancient Greek word (; from ) 'shadow-tailed', referring to the long bushy tail which many of its members have. The native Old English word for the squirrel, , survived only into Middle English (as ) before being replaced. The Old English word is of Common Germanic origin, cognat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heliosciurus Rufobrachium
The red-legged sun squirrel (''Heliosciurus rufobrachium'') is a species of rodent in the family Sciuridae, also commonly known as the isabelline red-legged sun squirrel. It is native to tropical western and central Africa where its range extends from Senegal in the west, through Nigeria and the Republic of Congo to Uganda and Tanzania in the east. Its natural habitats are subtropical or tropical moist lowland forests and moist savanna. This species is thought to be common and has a very wide distribution, so the International Union for Conservation of Nature has rated its conservation status as being of "least concern". Description The red-legged sun squirrel is a medium-sized squirrel, with an average head-body length of and an average weight of ; males are slightly larger than females. They have large eyes, small rounded ears, and a tail about the same length as the head and body combined. The fur is dark brown to grey across the body, but reddish on the limbs and muzzle and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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