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Mariana Mallard
The Mariana mallard or Oustalet's duck (''Anas oustaleti'') is an extinct species of duck of the genus ''Anas'' that was endemic to the Mariana Islands. Its taxonomic status is debated, and it has variously been treated as a full species, a subspecies of the mallard or of the Pacific black duck, or sometimes as a subspecies of the Indian spot-billed duck. Taxonomy The taxonomic status of the Mariana mallard is disputed, since it resembles an intermediate of the mallard and the Pacific black duck, two closely related allopatric species which frequently hybridise. Its males had two intergrading color morphs, called the "platyrhynchos" and the "superciliosa" types after the species they resembled more. It was first scientifically described by Tommaso Salvadori as a full species in the genus ''Anas'', named after its collector, the French zoologist Emile Oustalet. Salvadori suggested it was related to the Pacific black duck. It was previously known to the Chamorro people, who calle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tommaso Salvadori
Count Adelardo Tommaso Salvadori Paleotti (30 September 1835 – 9 October 1923) was an Italian zoologist and ornithologist. Biography Salvadori was born in Porto San Giorgio, son of Count Luigi Salvadori and Ethelyn Welby, who was English. His brother Giorgio married their cousin Adele Emiliani (daughter of Giacomo Emiliani and Casson Adelaide Welby) and had five children (Charlie, Robbie, Minnie, Nellie and Guglielmo "Willie"). His nephew Guglielmo Salvadori Paleotti married Giacinta Galletti de Cadilhac (daughter of Arturo Galletti de Cadilhac and Margaret Collier) and had three children (Gladys, Massimo "Max" and Gioconda Beatrice "Joyce"). He studied medicine in Pisa and Rome and graduated in medicine at the University of Pisa. He participated in Garibaldi's military expedition in Sicily (the Expedition of the Thousand), serving as a medical officer. He was assistant in the Museum of Zoology in 1863, becoming Vice-Director of the Royal Museum of Natural History in Tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allopatric
Allopatric speciation () – also referred to as geographic speciation, vicariant speciation, or its earlier name the dumbbell model – is a mode of speciation that occurs when biological populations become geographically isolated from each other to an extent that prevents or interferes with gene flow. Various geographic changes can arise such as the movement of continents, and the formation of mountains, islands, bodies of water, or glaciers. Human activity such as agriculture or developments can also change the distribution of species populations. These factors can substantially alter a region's geography, resulting in the separation of a species population into isolated subpopulations. The vicariant populations then undergo genetic changes as they become subjected to different selective pressures, experience genetic drift, and accumulate different mutations in the separated populations' gene pools. The barriers prevent the exchange of genetic information between t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Shelter
A rock shelter (also rockhouse, crepuscular cave, bluff shelter, or abri) is a shallow cave-like opening at the base of a bluff or cliff. In contrast to solutional caves (karst), which are often many miles long, rock shelters are almost always modest in size and extent. Formation Rock shelters form because a rock stratum such as sandstone that is resistant to erosion and weathering has formed a cliff or bluff, but a softer stratum, more subject to erosion and weathering, lies just below the resistant stratum, and thus undercuts the cliff. In arid areas, wind erosion (Aeolian erosion) can be an important factor in rockhouse formation. In most humid areas, the most important factor in rockhouse formation is frost spalling, where the softer, more porous rock underneath is pushed off, tiny pieces at a time, by frost expansion from water frozen in the pores. Erosion from moving water is seldom a significant factor. Many rock shelters are found under waterfalls. File:Rock shelt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Delacour
Jean may refer to: People * Jean (female given name) * Jean (male given name) * Jean (surname) Fictional characters * Jean Grey, a Marvel Comics character * Jean Valjean, fictional character in novel ''Les Misérables'' and its adaptations * Jean Pierre Polnareff, a fictional character from ''JoJo's Bizarre Adventure'' Places * Jean, Nevada, USA; a town * Jean, Oregon, USA Entertainment * Jean (dog), a female collie in silent films * "Jean" (song) (1969), by Rod McKuen, also recorded by Oliver * ''Jean Seberg'' (musical), a 1983 musical by Marvin Hamlisch Other uses * JEAN (programming language) * USS ''Jean'' (ID-1308), American cargo ship c. 1918 * Sternwheeler Jean, a 1938 paddleboat of the Willamette River See also *Jehan * * Gene (other) * Jeanne (other) * Jehanne (other) * Jeans (other) * John (other) John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Test ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Speciation
Hybrid speciation is a form of speciation where hybridization between two different species leads to a new species, reproductively isolated from the parent species. Previously, reproductive isolation between two species and their parents was thought to be particularly difficult to achieve, and thus hybrid species were thought to be very rare. With DNA analysis becoming more accessible in the 1990s, hybrid speciation has been shown to be a somewhat common phenomenon, particularly in plants. In botanical nomenclature, a hybrid species is also called a nothospecies. Hybrid species are by their nature polyphyletic. Ecology A hybrid may occasionally be better fitted to the local environment than the parental lineage, and as such, natural selection may favor these individuals. If reproductive isolation is subsequently achieved, a separate species may arise. Reproductive isolation may be genetic, ecological, behavioral, spatial, or a combination of these. If reproductive isolation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yoshimaro Yamashina
Marquis was a Japanese ornithologist. He was the founder of the Yamashina Institute for Ornithology. Biography Yamashina was born in Kōjimachi, Tokyo, the second son of Prince Kikumaro Yamashina and Princess Noriko (Kujo) Yamashina. Through his mother, a half-sister of the Crown Princess Sadako, he was the nephew of the then Crown Prince Yoshihito, the future Taishō Emperor. He developed a love of birds at an early age, which were found in abundance on the vast Yamashina estate in Tokyo. He was presented with a stuffed mandarin duck for his sixth birthday present. Yamashina attended the Gakushuin Peer's School, and per the orders of Emperor Meiji entered the Imperial Japanese Army, graduating from the 33rd class of the Imperial Japanese Army Academy with a specialty in artillery. In 1920, per a revision in the Imperial Household Law, he lost his status as an imperial prince, and became a member of the ''kazoku'' with the peerage title of marquis (''kōshaku'') on 20 July ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dean Amadon
Dean Arthur Amadon (June 5, 1912 – January 12, 2003) was an American ornithologist and an authority on birds of prey. Amadon was born in Milwaukee, Wisconsin to Arthur and Mary Amadon. He received a BS from Hobart College in 1934 and a Ph.D. from Cornell University in 1947. In 1937 he joined the American Museum of Natural History in New York City and was Chairman of the Department of Ornithology there from 1957 until 1973. In 1942, he married Octavia Gardella and had two daughters: Susan Avis and Emily Yvonne. Amadon was a member of the American Association for the Advancement of Science, president of the American Ornithologists' Union from 1964 to 1966 and Linnaean Society of New York. He joined The Explorers Club in 1959. His books included ''Eagles, Hawks and Falcons of the World'' (1968) with Leslie H. Brown, and ''Curassows and Related Birds'' (1973) with Jean Delacour. He died on January 12, 2003, in his home at 25 Kenwood Road, Tenafly, New Jersey.Saxon, Wolfgang"Dean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carolinian Language
Carolinian is an Austronesian language originating in the Caroline Islands, but spoken in the Northern Mariana Islands. It is an official language (as well as English) of the Carolinian people. Carolinian is a threatened language according to the Catalogue of Endangered Languages (ELCat), but available data is scarce. There are approximately 3,100 native speakers in the world. Carolinian has 95% lexical similarity with Satawalese, 88% with Woleaian and Puluwatese; 81% with Mortlockese; 78% with Chuukese, 74% with Ulithian. Classification The Commonwealth of the Northern Marianas occupies a chain of 14 islands in the Pacific, approximately 1,300 miles southeast of Japan. The total land areas are 183.5 square miles, and some islands are unpopulated. Most Carolinians live on Saipan, the largest island, though a very small island. Agrigan, is reported to be populated solely by Carolinians speaking Carolinian language. Carolinian language is more usually known as Saipan Carol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carolinian People
Carolinians are a Micronesian ethnic group who originated in Oceania, in the Caroline Islands, with a total population of over 8,500 people. They are also known as ''Remathau'' in the Yap's outer islands. The Carolinian word means "People of the Deep Sea." It is thought that their ancestors may have originally immigrated from Asia and Indonesia to Micronesia around 2,000 years ago. Their primary language is Carolinian, called ''Refaluwasch'' by native speakers, which has a total of about 5,700 speakers. The Carolinians have a matriarchal society in which respect is a very important factor in their daily lives, especially toward the matriarchs. Most Carolinians are of the Roman Catholic faith. The immigration of Carolinians to Saipan began in the early 19th century, after the Spanish killed most of the local population of Chamorro natives, reducing them to just 3,700. They began immigrating by sailing mostly from small canoes via islands which were previously devastated by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chamorro Language
Chamorro (; ch, Finuʼ Chamorro, links=no (CNMI), (Guam)) is an Austronesian language spoken by about 58,000 people (about 25,800 people on Guam and about 32,200 in the rest of the Mariana Islands and elsewhere). It is the native and spoken language of the Chamorro people, the indigenous people of the Marianas (Guam and the Commonwealth of the Northern Mariana Islands. Guam is a US territory while the CNMI has greater autonomy as a US commonwealth). There are three different dialects of Chamorro — Guamanian, Rotanese, and the general NMI (Saipan and Tinian) dialects. Classification Unlike most of its neighbors, Chamorro is not classified as a Micronesian or Polynesian language. Rather, like Palauan, it possibly constitutes an independent branch of the Malayo-Polynesian language family. At the time the Spanish rule over Guam ended, it was thought that Chamorro was a semi-creole language, with a substantial amount of the vocabulary of Spanish origin and beginning to hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chamorro People
The Chamorro people (; also CHamoru) are the indigenous people of the Mariana Islands, politically divided between the United States territory of Guam and the encompassing Commonwealth of the Northern Mariana Islands in Micronesia. Today, significant Chamorro populations also exist in several U.S. states, including Hawaii, California, Washington, Texas, Tennessee, Oregon, and Nevada, all of which together are designated as Pacific Islander Americans according to the U.S. Census. According to the 2000 Census, about 64,590 people of Chamorro ancestry live in Guam and another 19,000 live in the Northern Marianas. Another 93,000 live outside the Marianas in Hawaii and the West Coast of the United States. The Chamorros are primarily Austronesian, and many have Filipino ancestry (another Austronesian group). There are also descendants of Japanese people. Many may also have a small amount of Spanish and Mexican ancestry. Chamorros and other Micronesians constitute about half the curr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
