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Variegated Squirrel
The variegated squirrel (''Sciurus variegatoides'') is a tree squirrel in the genus ''Sciurus'' found in Costa Rica, El Salvador, Guatemala, Honduras, southern Mexico, Nicaragua, and Panama. Fifteen subspecies are recognised. It is a common squirrel and the International Union for Conservation of Nature has rated it a "least-concern species". Variegated squirrels kept as pets in Germany have been implicated in the transmission of a bornavirus to humans from which three people have died. Description The variegated squirrel is a medium-sized squirrel; the head-and-body length is about with a tail of much the same length. It weighs about . The several subspecies differ in appearance and there is often a considerable variation between the appearances of individuals in the same population. The dorsal colouration varies between dark brown to yellowish grey. The neck tends to be darker than other parts and there is often a paler patch behind the ears. The underparts are usually som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Ogilby
William Ogilby (1805–1873) was an Irish-born zoologist who was at the forefront of classification and naming of animal species in the 1830s and served as Secretary of the Zoological Society of London from 1839 to 1847. He removed to Ireland during the Great Famine and later built the grand but architecturally dismal Altinaghree Castle. Mount Ogilby in Queensland was named for him in 1846. Birth, family background and education Probably born in County Londonderry in 1805, William Ogilby was an illegitimate son of Leslie Ogilby (c1764-1845) who owned a bleaching green at Lackagh in the parish of Dungiven. The Ogilbys had been active in the linen trade since the mid-eighteenth century, and William's uncle Robert Ogilby (c1761-1839), having amassed a fortune as a linen factor in Dublin, bought the lease of the 22,000-acre Dungiven Castle estate and was reckoned "the wealthiest commoner in the North of Ireland, possessing it is said between ten and twenty thousand pounds a ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodents Of Central America
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for New Zealand, 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/richochetal (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 mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters. Rabbits, hares, and pikas, whose incisors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New England Journal Of Medicine
''The New England Journal of Medicine'' (''NEJM'') is a weekly medical journal published by the Massachusetts Medical Society. It is among the most prestigious peer-reviewed medical journals as well as the oldest continuously published one. History In September 1811, John Collins Warren, a Boston physician, along with James Jackson, submitted a formal prospectus to establish the ''New England Journal of Medicine and Surgery and Collateral Branches of Science'' as a medical and philosophical journal. Subsequently, the first issue of the ''New England Journal of Medicine and Surgery and the Collateral Branches of Medical Science'' was published in January 1812. The journal was published quarterly. In 1823, another publication, the ''Boston Medical Intelligencer'', appeared under the editorship of Jerome V. C. Smith. The editors of the ''New England Journal of Medicine and Surgery and the Collateral Branches of Medical Science'' purchased the weekly ''Intelligencer'' for $600 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammalian 1 Bornavirus
The Borna disease viruses 1 and 2 (BoDV-1 and BoDV-2) are members of the species ''Mammalian 1 orthobornavirus'' and cause Borna disease in mammals. Virology Genome BoDV-1/2 have the smallest genome (8.9 kilobases) of any ''Mononegavirales'' member and are unique within that order in their ability to replicate within the host cell nucleus. BoDV-1 was isolated from a diseased horse in the 1970s, but the virus particles were difficult to characterise. Nonetheless, the virus' genome has been characterised. It is a linear negative-sense single stranded RNA virus in the order ''Mononegavirales''. Several of the proteins encoded by the BoDV-1 genome have been characterised. The G glycoprotein is important for viral entry into the host cell. It has been suggested that the p10, or X, protein plays a role in viral RNA synthesis or ribonucleoprotein transport. The P40 nucleoprotein from BoDV-1 is multi-helical in structure and can be divided into two subdomains, each of which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Least-concern Species
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. They do not qualify as threatened, near threatened, or (before 2001) conservation dependent. Species cannot be assigned the "Least Concern" category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution or population status. Evaluation Since 2001 the category has had the abbreviation "LC", following the IUCN 2001 Categories & Criteria (version 3.1). Before 2001 "least concern" was a subcategory of the "Lower Risk" category and assigned the code "LR/lc" or lc. Around 20% of least concern taxa (3261 of 15636) in the IUCN database still use the code "LR/lc", which indicates they have not been re-evaluate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acorn
The acorn, or oaknut, is the nut of the oaks and their close relatives (genera ''Quercus'' and '' Lithocarpus'', in the family Fagaceae). It usually contains one seed (occasionally two seeds), enclosed in a tough, leathery shell, and borne in a cup-shaped cupule. Acorns are long and on the fat side. Acorns take between 5 and 24 months (depending on the species) to mature; see the list of ''Quercus'' species for details of oak classification, in which acorn morphology and phenology are important factors. Etymology The word ''acorn'' (earlier ''akerne'', and ''acharn'') is related to the Gothic name ''akran'', which had the sense of "fruit of the unenclosed land". The word was applied to the most important forest produce, that of the oak. Chaucer spoke of "achornes of okes" in the 14th century. By degrees, popular etymology connected the word both with "corn" and "oak-horn", and the spelling changed accordingly. The current spelling (emerged 15c.-16c.), derives from asso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diurnality
Diurnality is a form of plant and ethology, animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is "diurnal". The timing of activity by an animal depends on a variety of environmental factors such as the temperature, the ability to gather food by sight, the risk of predation, and the time of year. Diurnality is a cycle of activity within a 24-hour period; cyclic activities called circadian rhythms are endogenous cycles not dependent on external cues or environmental factors except for a zeitgeber. Animals active during twilight are crepuscular, those active during the night are nocturnal and animals active at sporadic times during both night and day are cathemerality, cathemeral. Plants that open their flowers during the daytime are described as diurnal, while those that bloom during nighttime are nocturnal. The timing of flower opening is often related to the time at which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apoyo Lagoon Natural Reserve
Laguna de Apoyo Nature Reserve (Spanish: ''Reserva Natural Laguna de Apoyo'') is a nature reserve located between the departments of Masaya and Granada in Nicaragua. Lake Apoyo was declared a nature reserve in 1991 and is managed by the Ministry of the Environment and Natural Resources (MARENA) and comprises one of 78 protected areas of Nicaragua. Activities within the Laguna de Apoyo Nature Reserve are regulated by its management plan, approved in 2010, which prohibits the construction of housing within the reserve and use of motorized vehicles on the lake. Geological data suggests that Lake Apoyo originated about 23,000 years ago. Geography and hydrology The Apoyo Lagoon Natural Reserve protects a volcanic lake, Laguna de Apoyo, and its drainage basin. Laguna de Apoyo is an endorheic lake occupying the caldera of an extinct volcano. The lake is approximately round with the diameter of 6.6 km. It is 175 m deep and occupies an area of 19.44 km2. The lake's drainage basin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicoya Peninsula
The Nicoya Peninsula () is a peninsula on the Pacific coast of Costa Rica. It is divided into two provinces: Guanacaste Province in the north, and the Puntarenas Province in the south. It is located at . It varies from 19 to wide and is approximately long, forming the largest peninsula in the country. It is known for its beaches and is a popular tourist destination. The main transport and commercial centre in the region is Nicoya, one of the oldest settlements in Costa Rica. Ferries run between the town of Puntarenas on the mainland and the Nicoya Peninsula. There is an international airport in nearby Liberia and small domestic airstrips in Nosara, Carrillo, Tamarindo and Tambor. The region was also featured in the book '' Blue Zones'', by Dan Buettner, which focused on the longevity found among Nicoya's residents. Places of interest Other notable settlements and places of interest in the area include (going roughly from north to south): Tamarindo, Santa Cruz, Nosara, Sáma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamarindo Wildlife Refuge
Las Baulas de Guanacaste Marine National Park ( es, Parque Nacional Marino Las Baulas de Guanacaste) is a National Park of Costa Rica and a Ramsar Site. The park is managed by the Tempisque Conservation Area, and covers approximately a marine area of the Tamarindo Bay, next to the town of Tamarindo. It supports the largest nesting colony of leatherback sea turtles on the Pacific coast of the Americas. Female leatherbacks often come ashore at Playa Grande (Grande Beach) between October and May to lay their eggs. More than half the park is underwater and protected but still allows recreation, such as surfing. The park has white-sand beaches and forests. The forests are home to approximately 174 species of birds and many other animals. The National Park covers four beaches (Carbón, Ventanas, Grande and Langosta), as well as the Tamarindo estuary and mangroves at the mouth of the Matapalo River and the San Francisco River Estuary. To the north, the Cerros Morro and Hermosa are also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San José, Costa Rica
San José (; meaning "Saint Joseph") is the capital and largest city of Costa Rica, and the capital of the province of the same name. It is in the center of the country, in the mid-west of the Central Valley, within San José Canton. San José is Costa Rica's seat of national government, focal point of political and economic activity, and major transportation hub. San José Canton's population was 288,054 in 2011, and San José's municipal land area is 44.2 square kilometers (17.2 square miles), with an estimated 333,980 residents in 2015. Together with several other cantons of the central valley, including Alajuela, Heredia and Cartago, it forms the country's Greater Metropolitan Area, with an estimated population of over 2 million in 2017. The city is named in honor of Joseph of Nazareth. Founded in 1736 by order of Cabildo de León, the population of San José rose during the 18th century through the use of colonial planning. It has historically been a city of strat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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