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London Underground Mosquito
The London Underground mosquito, ''Culex pipiens f. molestus'', is a form of mosquito. It is named for its biting of people sleeping in the London Underground railway system during the Blitz, but it has a worldwide distribution and long predates the existence of the London Underground. It was first described in the 18th century based on Egyptian specimens by the biologist Peter Forsskål (1732–1763). He named it ''Culex molestus'' due to its voracious biting, but later biologists reclassified it as '' Culex pipiens'' f. ''molestus'' because there were no morphological differences between it and ''Culex pipiens''. A study from 2004 analyzing DNA microsatellites suggested that it might be a distinct species, but a paper from 2012 reported it to be "a physiological and ecological variant of ''Cx. pipiens''" which should not be considered a distinct species. As of 2024, the consensus among researchers is that it is not a distinct species, but a form of '' Culex pipiens'', which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Form (zoology)
In zoology, the word "form" or "''forma''" (literally Latin for ''form'') is a strictly informal term that is sometimes used to describe organisms. Under the ''International Code of Zoological Nomenclature'' the term has no standing (it is not accepted). In other words, although form names are Latin, and are sometimes wrongly appended to a binomial name, in a zoological context, forms do not have much taxonomic significance. Usage of the term Some zoologists use the word "form" or "forma" to describe variation in animals, especially insects, as part of a series of terms and abbreviations that are appended to the binomen or trinomen. Many "typical specimens" may be described, but none should be considered absolute, unconditional or categorical. Forms have no official status, though they are sometimes useful in describing altitudinal or geographical clines. As opposed to morphs (see below), a subpopulation usually consists of a single form only at any given point of time. ;' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmodium Relictum
''Plasmodium relictum'' is a species in the genus ''Plasmodium,'' subgenus '' Haemamoeba''. It is a parasite, and the most common cause of malaria in birds. Like all ''Plasmodium'' species, ''P. relictum'' has both vertebrate and insect hosts. The vertebrate hosts for this parasite are birds. Distribution ''P. relictum'' is geographically widespread, and is the most widespread malaria parasite of birds. Climate change is broadening its distribution further and is expected to continue to do so, including into higher elevations. Hosts Avian ''P. relictum'' infects a wide variety of birds including birds from various orders Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * H .... Infections in numerous wild birds and experimental animals have been described including partridges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melbourne
Melbourne ( , ; Boonwurrung language, Boonwurrung/ or ) is the List of Australian capital cities, capital and List of cities in Australia by population, most populous city of the States and territories of Australia, Australian state of Victoria (state), Victoria, and the second most-populous city in Australia, after Sydney. The city's name generally refers to a metropolitan area also known as Greater Melbourne, comprising an urban agglomeration of Local Government Areas of Victoria#Municipalities of Greater Melbourne, 31 local government areas. The name is also used to specifically refer to the local government area named City of Melbourne, whose area is centred on the Melbourne central business district and some immediate surrounds. The metropolis occupies much of the northern and eastern coastlines of Port Phillip Bay and spreads into the Mornington Peninsula, part of West Gippsland, as well as the hinterlands towards the Yarra Valley, the Dandenong Ranges, and the Macedon R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller islands. It has a total area of , making it the list of countries and dependencies by area, sixth-largest country in the world and the largest in Oceania. Australia is the world's flattest and driest inhabited continent. It is a megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and Climate of Australia, climates including deserts of Australia, deserts in the Outback, interior and forests of Australia, tropical rainforests along the Eastern states of Australia, coast. The ancestors of Aboriginal Australians began arriving from south-east Asia 50,000 to 65,000 years ago, during the Last Glacial Period, last glacial period. By the time of British settlement, Aboriginal Australians spoke 250 distinct l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Nile Virus
West Nile virus (WNV) is a single-stranded RNA virus that causes West Nile fever. It is a member of the family ''Flaviviridae'', from the genus ''Flavivirus'', which also contains the Zika virus, dengue virus, and yellow fever virus. The virus is primarily transmitted by mosquitoes, mostly species of ''Culex''. The primary host (biology), hosts of WNV are birds, so that the virus remains within a "bird–mosquito–bird" Transmission (medicine), transmission cycle. The virus is genetically related to the Japanese encephalitis family of viruses. Humans and horses both exhibit disease symptoms from the virus, and symptoms rarely occur in other animals. West Nile virus was not named directly after the Nile River, but rather, after the West_Nile_sub-region, West Nile district of Uganda where the virus was first isolated in 1937. Structure Like most other flaviviruses, WNV is an Viral envelope, enveloped virus with icosahedral symmetry. Electron microscope studies reveal a 45–5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brownstone
Brownstone is a brown Triassic–Jurassic sandstone that was historically a popular building material. The term is also used in the United States and Canada to refer to a townhouse clad in this or any other aesthetically similar material. Types Apostle Island brownstone In the 19th century, Basswood Island, Wisconsin was the site of a quarry run by the Bass Island Brownstone Company Quarry, Bass Island Brownstone Company, which operated from 1868 into the 1890s. The brownstone from this and other quarries in the Apostle Islands was in great demand, with brownstone from Basswood Island being used in the construction of the first Milwaukee County Courthouse in the 1860s. Hummelstown brownstone Hummelstown brownstone is extremely popular along the East Coast of the United States, with numerous government buildings throughout West Virginia, Pennsylvania, New York, Maryland, and Delaware being faced entirely with the stone, which comes from the Hummelstown Quarry in Hummelstown, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive with a respective county. The city is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York is a global center of finance and commerce, culture, technology, entertainment and media, academics, and scientific output, the arts and fashion, and, as home to the headquarters of the United Nations, international diplomacy. With an estimated population in 2024 of 8,478,072 distributed over , the city is the most densely populated major city in the United States. New York City has more than double the population of Los Angeles, the nation's second-most populous city. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhattan
Manhattan ( ) is the most densely populated and geographically smallest of the Boroughs of New York City, five boroughs of New York City. Coextensive with New York County, Manhattan is the County statistics of the United States#Smallest, largest, and average area per state and territory, smallest county by area in the U.S. state of New York (state), New York. Located almost entirely on Manhattan Island near the southern tip of the state, Manhattan constitutes the center of the Northeast megalopolis and the urban core of the New York metropolitan area. Manhattan serves as New York City's Economy of New York City, economic and Government of New York City, administrative center and has been described as the cultural, financial, Media in New York City, media, and show business, entertainment capital of the world. Present-day Manhattan was originally part of Lenape territory. European settlement began with the establishment of a trading post by Dutch colonization of the Americas, D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper West Side
The Upper West Side (UWS) is a neighborhood in the borough of Manhattan in New York City. It is bounded by Central Park on the east, the Hudson River on the west, West 59th Street to the south, and West 110th Street to the north. The Upper West Side is adjacent to the neighborhoods of Hell's Kitchen to the south, Columbus Circle to the southeast, and Morningside Heights to the north. Like the Upper East Side opposite Central Park, the Upper West Side is an affluent, primarily residential area with many of its residents working in commercial areas of Midtown and Lower Manhattan. Similar to the Museum Mile district on the Upper East Side, the Upper West Side is considered one of Manhattan's cultural and intellectual hubs, with Columbia University and Barnard College located just to the north of the neighborhood, the American Museum of Natural History located near its center, the New York Institute of Technology in the Columbus Circle proximity and Lincoln Center for the Per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egypt
Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northern coast of Egypt, the north, the Gaza Strip of Palestine and Israel to Egypt–Israel barrier, the northeast, the Red Sea to the east, Sudan to Egypt–Sudan border, the south, and Libya to Egypt–Libya border, the west; the Gulf of Aqaba in the northeast separates Egypt from Jordan and Saudi Arabia. Cairo is the capital, list of cities and towns in Egypt, largest city, and leading cultural center, while Alexandria is the second-largest city and an important hub of industry and tourism. With over 109 million inhabitants, Egypt is the List of African countries by population, third-most populous country in Africa and List of countries and dependencies by population, 15th-most populated in the world. Egypt has one of the longest histories o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science (journal)
''Science'' is the peer review, peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is over 400,000 people. ''Science'' is based in Washington, D.C., United States, with a second office in Cambridge, UK. Contents The major focus of the journal is publishing important original scientific research and research reviews, but ''Science'' also publishes science-related news, opinions on science policy and other matters of interest to scientists and others who are concerned with the wide implications of science and technology. Unlike most scientific journals, which focus on a specific field, ''Science'' and its rival ''Nature (journal), Nature'' cover the full range of List of academ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsatellite (genetics)
A microsatellite is a tract of repetitive DNA in which certain DNA motifs (ranging in length from one to six or more base pairs) are repeated, typically 5–50 times. Microsatellites occur at thousands of locations within an organism's genome. They have a higher mutation rate than other areas of DNA leading to high genetic diversity. Microsatellites are often referred to as short tandem repeats (STRs) by forensic geneticists and in genetic genealogy, or as simple sequence repeats (SSRs) by plant geneticists. Microsatellites and their longer cousins, the minisatellites, together are classified as VNTR (variable number of tandem repeats) DNA. The name "satellite" DNA refers to the early observation that centrifugation of genomic DNA in a test tube separates a prominent layer of bulk DNA from accompanying "satellite" layers of repetitive DNA. They are widely used for DNA profiling in cancer diagnosis, in kinship analysis (especially paternity testing) and in forensic identific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
