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Asterias Amurensis
''Asterias amurensis'', also known as the Northern Pacific seastar and Japanese common starfish, is a seastar found in shallow seas and estuaries, native to the coasts of northern China, Korea, far eastern Russia, Japan, Alaska, the Aleutian Islands and British Columbia in Canada. Two forms are recognised: the nominate and ''forma'' ''robusta'' from the Strait of Tartary. It mostly preys on large bivalve molluscs, and it is mostly preyed on by other species of starfish. Population booms in Japan can affect the harvest of mariculture operations and are costly to combat. This species has been introduced to oceanic areas of southern Australia, and is an invasive species there causing damage to native species, especially in Tasmania. Common names It is known in English vernacular as the northern Pacific seastar, flatbottom seastar, Japanese seastar, Japanese starfish, north Pacific seastar, purple-orange seastar and Japanese common starfish. Taxonomy This species was first describ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Frederik Lütken
Christian Frederik Lütken (; 7 October 1827, in Sorø – 6 February 1901), was a Danish zoologist and naturalist. In 1852, he resigned his commission as a lieutenant with the Danish army, and earned his master's degree in sciences the following year.Darwinarkivet.dk Christian Frederik Lütken (1827–1901) Afterwards, he served as an assistant to Japetus Steenstrup (1813–1897) at the University of Copenhagen Zoological Museum, at the time an independent institution, now part of the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strait Of Tartary
Strait of Tartary or Gulf of Tartary (; ; ; ) is a strait in the Pacific Ocean dividing the Russian island of Sakhalin from mainland Asia (South-East Russia), connecting the Sea of Okhotsk ( Nevelskoy Strait) on the north with the Sea of Japan on the south. It is long, wide, and only deep at its shallowest point. History Yuan dynasty During the Yuan dynasty, the Yuan armies crossed the strait in the Mongol invasions of Sakhalin. Alleged remnants of a Chinese fort dating back to the Mongol Yuan era can be found in Sakhalin today. " Tartary" is an older name used by Europeans to refer to a vast region covering Inner Asia, Central Asia and North Asia. The toponym is derived from the medieval ethnonym Tartars, which was applied to various Turkic and Mongol semi-nomadic empires, including the Yuan dynasty that ruled over China and the straits of Northeast Asia. Qing dynasty During the destruction of the Ming dynasty and rise of the Qing dynasty in 1644, the name " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asterias Versicolor
''Asterias versicolor'' is a species of starfish native to the southern coasts of Japan southwards to the South China Sea. Taxonomy The species was first described by Percy Sladen in 1889. Sladen does not specify the etymology of the specific epithet, but states the mottled yellow and dark brown colouration is striking, and likely derived the name from this observation. In 1930 Walter Kenrick Fisher stated that ''Asterias versicolor'' was closely related to ''A. amurensis'', but that ''A. rollestoni'' might well intergrade with this species to the north of its range. In the same publication Fisher reduced ''A. rollestoni'' to a ''forma'' of ''A. amurensis''. In 1936 Ryori Hayashi published an account of the species and stated his doubts regarding its distinctiveness compared with ''A. amurensis'', and in the 1940 article ''Contributions to the Classification of the Sea-stars of Japan'' Hayashi went through with his suggestion and reduced ''A. versicolor'' to a form of ''A. am ... [...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] |
Walter Kenrick Fisher
Walter Kenrick Fisher (February 1, 1878 – November 2, 1953) was an American Zoology, zoologist, Evolutionary biology, evolutionary biologist, illustrator, and painter. He taught in Stanford University before eventually becoming Emeritus Professor in Zoology until his retirement in 1943. Fisher was the son of Ornithology, ornithologist Albert Kenrick Fisher. Early life Walter K. Fisher was born on February 1, 1878, in Ossining, New York (town), Ossining, New York. His father was Albert Kenrick Fisher and his mother was Alwilda Fisher (''née'' Merritt). As a boy, Fisher explored the countryside around his home in the Hudson Valley, and as he grew older, he conducted similar explorations around Washington, D. C., following his family's relocation to the capital. During these ventures, he collected birds and plants, and he sketched the skulls he collected and the landscapes he encountered. Fisher demonstrated talent as an artist and initially considered pursuing his artistic inclina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian Museum
The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums, education and research centers, created by the U.S. government "for the increase and diffusion of knowledge". Founded on August 10, 1846, it operates as a trust instrumentality and is not formally a part of any of the three branches of the federal government. The institution is named after its founding donor, British scientist James Smithson. It was originally organized as the United States National Museum, but that name ceased to exist administratively in 1967. The Smithsonian Institution has historical holdings of over 157 million items, 21 museums, 21 libraries, 14 education and research centers, a zoo, and historical and architectural landmarks, mostly located in Washington, D.C. Additional facilities are located in Maryland, New York, and Virginia. More than 200 institutions and museums in 47 states,States without Smithsonian Affiliates: Idaho, North Dakota, Utah. Puerto Rico, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Name
In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrasted with the scientific name for the same organism, which is often based in Latin. A common name is sometimes frequently used, but that is not always the case. In chemistry, IUPAC defines a common name as one that, although it unambiguously defines a chemical, does not follow the current systematic naming convention, such as acetone, systematically 2-propanone, while a vernacular name describes one used in a lab, trade or industry that does not unambiguously describe a single chemical, such as copper sulfate, which may refer to either copper(I) sulfate or copper(II) sulfate. Sometimes common names are created by authorities on one particular subject, in an attempt to make it possible for members of the general public (including s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invasive Species Specialist Group
Invasive may refer to: *Invasive (medical) procedure *Invasive species *Invasive observation, especially in reference to surveillance *Invasively progressive spread of disease from one organ in the body to another, especially in reference to cancer, see invasion (cancer) See also *Intruder (other) *Invasion (other) *Intrusive (other) Intrusive may refer to: * Intrusiveness, a typically unwelcome behavior, interrupting and disturbing to others * Intrusive rock, intrusion of molten magma leaving behind igneous rock * Saltwater intrusion, the movement of saline water into fres ... * Invasive procedure (other) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Michigan
The University of Michigan (U-M, U of M, or Michigan) is a public university, public research university in Ann Arbor, Michigan, United States. Founded in 1817, it is the oldest institution of higher education in the state. The University of Michigan is one of the earliest American research universities and is a founding member of the Association of American Universities. In the fall of 2023, the university employed 8,189 faculty members and enrolled 52,065 students in its programs. The university is Carnegie Classification of Institutions of Higher Education, classified among "R1: Doctoral Universities – Very high research activity". It consists of nineteen colleges and offers 250 degree programs at the undergraduate and graduate levels. The university is Higher education accreditation in the United States, accredited by the Higher Learning Commission. In 2021, it ranked third among American universities in List of countries by research and development spending, research expe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmania
Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The state encompasses the main island of Tasmania, the List of islands by area#Islands, 26th-largest island in the world, and the List of islands of Tasmania, surrounding 1000 islands. It is Australia's smallest and least populous state, with 573,479 residents . The List of Australian capital cities, state capital and largest city is Hobart, with around 40% of the population living in the Greater Hobart area. Estimated resident population, 30 June 2017. Tasmania is the most decentralised state in Australia, with the lowest proportion of its residents living within its capital city. Tasmania's main island was first inhabited by Aboriginal Australians, Aboriginal peoples, who today generally identify as Palawa or Pakana. It is believed that Abori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Pacific Seastar In Australia
Northern may refer to the following: Geography * North, a point in direction * Northern Europe, the northern part or region of Europe * Northern Highland, a region of Wisconsin, United States * Northern Province, Sri Lanka * Northern Range, a range of hills in Trinidad * Northern State (Sudan), one of the 18 wilayat (states) of Sudan Schools * Northern Collegiate Institute and Vocational School (NCIVS), a school in Sarnia, Canada * Northern Secondary School, Toronto, Canada * Northern Secondary School (Sturgeon Falls), Ontario, Canada * Northern University (other), various institutions * Northern Guilford High School, a public high school in Greensboro, North Carolina Companies * Arriva Rail North, a former train operating company in northern England * Chemins de fer du Nord (Northern Railway Company), a former rail transport company in northern France * Nord-Aviation (Northern Aviation), a former state-owned French aircraft manufacturer. * Compañía de los Caminos d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Australia
Southern Australia is generally considered to consist of the states and territories of Australia of New South Wales, Victoria, the Australian Capital Territory (Canberra), Tasmania and South Australia. The part of Western Australia south of latitude 26° south (which includes the state capital Perth) a definition widely used in law and state government policy is also usually included. Covering about half of the total area of Australia, Southern Australia includes about three-quarters of the Australian population, the main agricultural areas and the main industrial centres. The area is also notable for its primarily temperate, mediterranean, alpine or arid environmental and climatic conditions which contrasts to the mainly tropical climate of Northern Australia. Southern Australia has long suffered extreme weather events due to the arid landscape, however in recent times these conditions have been exacerbated due to climate change. The region has several key industries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
