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Poropuntius Consternans
''Poropuntius consternans'' is a species of ray-finned fish in the genus ''Poropuntius'' which is endemic to the eastern half of the Bolovens Plateau in southern Laos. Its numbers are thought to be decreasing due to heavy fishing pressure, but the biggest threat to this species are the planned dams, Xe, Pian-Xe and Namnoy, which are to be built within the next few years and which are likely to have a significant impact on this species. In addition, there is continuing decline in the quality as the surrounding land is converted to agriculture. The IUCN assess ''Poropuntius consternans'' as Endangered. It is one of four ''Poropuntius'' species endemic to the Bolovens Plateau, three of which were treated as trophic morphs of '' P. bolovenensis'' by Tyson R. Roberts but more recently Maurice Kottelat Maurice Kottelat (born 16 July 1957 in Delémont, Switzerland [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maurice Kottelat
Maurice Kottelat (born 16 July 1957 in Delémont, SwitzerlandCommissioners: Dr Maurice Kottelat International Commission on Zoological Nomenclature (accessed 2014)) is a specializing in Eurasian freshwater fishes. Kottelat obtained a License in Sciences at the in 1987(outdated link: [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ray-finned Fish
Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or horny spines (rays), as opposed to the fleshy, lobed fins that characterize the class Sarcopterygii (lobe-finned fish). These actinopterygian fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the link or connection between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). By species count, actinopterygians dominate the vertebrates, and they constitute nearly 99% of the over 30,000 species of fish. They are ubiquitous throughout freshwater and marine environments from the deep sea to the highest mountain streams. Extant species can range in size from ''Paedocypris'', at , to the massive ocean sunfish, at , and the long-bodied oarfish, at . The vast majority of Actinoptery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poropuntius
''Poropuntius'' is a genus of cyprinid fish found mainly in freshwater habitats of Southeast Asia and Yunnan in China, but ''P. burtoni'' is from South Asia. Several species have highly restricted ranges and are threatened, and a single ''P. speleops'' is a cavefish.Romero, A., editor (2001). The Biology of Hypogean Fishes, p. 18. Developments in Environmental Biology of Fishes. Species There are currently 38 recognized species in this genus: * '' Poropuntius alloiopleurus'' ( Vaillant, 1893) * '' Poropuntius angustus'' Kottelat, 2000 * '' Poropuntius bantamensis'' (Rendahl ( de), 1920) * '' Poropuntius bolovenensis'' T. R. Roberts, 1998 * '' Poropuntius brevispinus'' ( V. H. Nguyễn & L. H. Doan, 1969) * '' Poropuntius burtoni'' ( Mukerji, 1933) * '' Poropuntius carinatus'' ( H. W. Wu & R. D. Lin, 1977) * '' Poropuntius chondrorhynchus'' ( Fowler, 1934) * '' Poropuntius chonglingchungi'' ( T. L. Tchang, 1938) * '' Poropuntius cogginii'' ( B. L. Chaudhuri, 1911) * '' Poropun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolovens Plateau
The Bolaven Plateau is an elevated region in southern Laos. Most of the plateau is located within Champasak Province of Laos, though the edges of the plateau are also located in Salavan, Sekong and Attapeu Provinces. It is located between the Annamite Mountain Range, along which runs Laos' eastern border with Vietnam, and the Mekong River to the west, at about . The plateau's elevation ranges approximately from above sea level. The plateau is crossed by several rivers and has many scenic waterfalls. The name Bolaven makes reference to the Laven ethnic group which has historically dominated the region. However, domestic migrations by the Lao ethnic group (which comprises approximately 50 to 60 percent of the population of Laos) has resulted in widespread interethnic marriage, thus modifying the ethnic composition of the region. Historical significance The Bolaven Plateau has had an important role in the greater history of Laos. The three most significant historical period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymorphism (biology)
In biology, polymorphism is the occurrence of two or more clearly different morphs or forms, also referred to as alternative ''phenotypes'', in the population of a species. To be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating). Ford E.B. 1965. ''Genetic polymorphism''. Faber & Faber, London. Put simply, polymorphism is when there are two or more possibilities of a trait on a gene. For example, there is more than one possible trait in terms of a jaguar's skin colouring; they can be light morph or dark morph. Due to having more than one possible variation for this gene, it is termed 'polymorphism'. However, if the jaguar has only one possible trait for that gene, it would be termed "monomorphic". For example, if there was only one possible skin colour that a jaguar could have, it would be termed monomorphic. The term polyphenism can be used to clarify that the different forms arise from the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poropuntius Bolovenensis
''Poropuntius bolovenensis'' is a species of ray-finned fish in the genus ''Poropuntius''. This species is endemic to the eastern half of the Boloven Plateau in southern Laos where its numbers are decreasing under heavy fishing pressure. However, the biggest threat to this species is the construction of dams which are likely to have a significant impact on this species. In addition the quality and area of its habitat is declining due to conversion for agriculture. The IUCN The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ... assess ''P. bolovensis'' as Endangered. This species occurs in clear, rocky streams at altitudes of 800–1,200 m above sea level where it feeds mainly on insects. It does not thrive in reservoirs. It is not a true migrant but it does make local movements. It is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tyson R
Tyson is a male given name of old French origin meaning 'high-spirited', 'fire'. It is from this that a surname arose 'son of Tyson'. Surname * Alan Tyson (1926–2000), British musicologist *Barbara Tyson (born 1964), Canadian actress *Bill Tyson, Irish writer and producer *Cathy Tyson (born 1965), British actress *Charles Tyson (1885–1964), English footballer *Cicely Tyson (1924–2021), American actress *Donald J. Tyson (1930–2011), American business executive and billionaire *Edward Tyson (1650–1708), English scientist and physician *Frank Tyson (born 1930), English cricketer *Ian Tyson (born 1933), Canadian musician *Isaac Tyson (1792–1861), American mining industrialist *Jacob Tyson (1773–1848), American politician *James Tyson (1819–1898), Australian pastoralist *J. Anthony Tyson (born 1940), American physicist and astronomer * John M. Tyson (born 1953), American judge *June Tyson (1936–1992), American jazz singer *Keith Tyson (born 1969), British artist *Laur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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