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Lake Barombi Mbo
Lake Barombi Mbo or Barombi-ma-Mbu is a lake near Kumba in the Southwest Region of Cameroon. It is located in the Cameroon volcanic chain, and is the largest volcanic lake in this region. It is one of the oldest radiocarbon-dated lakes in Africa, with the youngest lava flow in it being about one million years old. On old colonial maps the area was known as Elefanten Sea (Elephant Lake), but the elephants living in the area were extirpated due to ivory trading. Biology Until now, 15 species of fishes have been recorded from the lake.Freshwater Ecoregions of the World (2008). Western Equatorial Crater Lakes.'' Among others, this includes ''Labeobarbus batesii'', a member of the '' Fundulopanchax mirabilis'' group, and the endemic catfish '' Clarias maclareni''. Perhaps most noteworthy are the 11 species of cichlids that are endemic to the lake ('' Konia spp.'', ''Stomatepia spp.'', ''Myaka myaka'', ''Pungu maclareni'', ''Sarotherodon caroli'', '' S. linnellii'', '' S. lohberge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labeobarbus Batesii
''Labeobarbus batesii'' is a species of cyprinid fish from Africa that occurs in Cameroon, Chad and Gabon Gabon (; ; snq, Ngabu), officially the Gabonese Republic (french: République gabonaise), is a country on the west coast of Central Africa. Located on the equator, it is bordered by Equatorial Guinea to the northwest, Cameroon to the north .... References * Cyprinid fish of Africa batesii Taxa named by George Albert Boulenger Fish described in 1903 {{Cyprininae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympatric Speciation
Sympatric speciation is the evolution of a new species from a surviving ancestral species while both continue to inhabit the same geographic region. In evolutionary biology and biogeography, sympatric and sympatry are terms referring to organisms whose ranges overlap so that they occur together at least in some places. If these organisms are closely related (e.g. sister species), such a distribution may be the result of sympatric speciation. Etymologically, sympatry is derived from the Greek roots ("together") and ("homeland"). The term was coined by Edward Bagnall Poulton in 1904, who explains the derivation. Sympatric speciation is one of three traditional geographic modes of speciation.Futuyma, D. J. 2009. ''Evolution'' (2nd edition). Sinauer Associates, Inc. Allopatric speciation is the evolution of species caused by the geographic isolation of two or more populations of a species. In this case, divergence is facilitated by the absence of gene flow. Parapatric speciation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature (journal)
''Nature'' is a British weekly scientific journal founded and based in London, England. As a multidisciplinary publication, ''Nature'' features peer-reviewed research from a variety of academic disciplines, mainly in science and technology. It has core editorial offices across the United States, continental Europe, and Asia under the international scientific publishing company Springer Nature. ''Nature'' was one of the world's most cited scientific journals by the Science Edition of the 2019 ''Journal Citation Reports'' (with an ascribed impact factor of 42.778), making it one of the world's most-read and most prestigious academic journals. , it claimed an online readership of about three million unique readers per month. Founded in autumn 1869, ''Nature'' was first circulated by Norman Lockyer and Alexander Macmillan as a public forum for scientific innovations. The mid-20th century facilitated an editorial expansion for the journal; ''Nature'' redoubled its efforts in exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarotherodon Steinbachi
The kululu (''Sarotherodon steinbachi'') e.g. Vikululu - Nikululu - Akululu - Bokululu - Hekululu is a species of cichlid endemic to Lake Barombi Mbo in western Cameroon. This species can reach a length of SL. It is threatened because of pollution and sedimentation due to human activities. It is potentially also threatened by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos), although studies indicate that Barombo Mbo lacks excess amounts of this gas.Freeth, S.J.; C.O. Ofoegbu; and K.M. Onuoha (1992). Natural Hazards in West and Central Africa, pp. 50—51. It feeds on tiny organisms such as rotifers, diatoms and sponge spicules, and organic debris. The specific name honours the entomologist Gerhard Steinbach (1923-2016) of the Humboldt University of Berlin who was a member of an expedition which was led by zoologist Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarotherodon Lohbergeri
The leka keppe (''Sarotherodon lohbergeri'') or keppi, is a species of cichlid essentially endemic to Lake Barombi Mbo in western Cameroon, but additionally two juveniles have been found in the Kumba Stream (Kake River), a tributary of the lake's outlet. This species reaches a length of SL. It is threatened because of pollution and sedimentation due to human activities. It is potentially also threatened by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos), although studies indicate that Barombo Mbo lacks excess amounts of this gas.Freeth, S.J.; C.O. Ofoegbu; and K.M. Onuoha (1992). Natural Hazards in West and Central Africa, pp. 50—51. This schooling species feeds on algae, tiny organisms such as rotifer The rotifers (, from the Latin , "wheel", and , "bearing"), commonly called wheel animals or wheel animalcules, make up a phylum (Rotifera ) of microscopic and near-microscopic pseudocoelomate animals. They were first described by Rev. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarotherodon Caroli
The fissi (''Sarotherodon caroli'') is a species of cichlid endemic to Lake Barombi Mbo in western Cameroon. This species can reach a length of SL. It is threatened because of pollution and sedimentation due to human activities. It is potentially also threatened by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos Lake Nyos ( ) is a crater lake in the Region of Cameroon, located about northwest of Yaoundé, the capital. Nyos is a deep lake high on the flank of an inactive volcano in the Oku volcanic plain along the Cameroon line of volcanic activity ...), although studies indicate that Barombo Mbo lacks excess amounts of this gas.Freeth, S.J.; C.O. Ofoegbu; and K.M. Onuoha (1992). Natural Hazards in West and Central Africa, pp. 50—51. Adults mainly feed on phytoplankton. References Endemic fauna of Cameroon Sarotherodon Cichlid fish of Africa Fish of Lake Barombi Mbo Fish described in 1930 Taxonomy articles created by Po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pungu Maclareni
The pungu (''Pungu maclareni'') is a species of cichlid endemic to Lake Barombi Mbo in Cameroon where it prefers shallow waters of about in depth. It feeds on invertebrates, sponges, diatoms and macrophytes. This species can reach a length of SL. It is currently the only known member of its genus, nested within the ''Sarotherodon''.Martin; Cutler; Friel; Touokong; Coop; and Wainwright (2015). Complex histories of repeated gene flow in Cameroon crater lake cichlids cast doubt on one of the clearest examples of sympatric speciation. Evolution 69-6: 1406–1422. The pungu is threatened because of pollution and sedimentation from human activities. '' Konia'', ''Myaka'' and ''Stomatepia ''Stomatepia'' is a genus of cichlids endemic to Lake Barombi Mbo in western Cameroon. Although generally recognized as distinct, the genus is very close to ''Sarotherodon''. The ''Stomatepia'' species are all recognized as critically endangere ...'' are three other equally threatened genera o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myaka Myaka
The myaka (''Myaka myaka'') is a critically endangered species of cichlid endemic to Lake Barombi Mbo in western Cameroon. It prefers open, deeper waters where it feeds on phytoplankton and small insects, only venturing into shallower waters to spawn. This species can reach a length of SL. It is currently the only known species in the genus ''Myaka'', but it is very close to ''Sarotherodon''.Martin; Cutler; Friel; Touokong; Coop; and Wainwright (2015). Complex histories of repeated gene flow in Cameroon crater lake cichlids cast doubt on one of the clearest examples of sympatric speciation. Evolution 69-6: 1406–1422. The myaka is threatened because of pollution and sedimentation due to human activities. It is potentially also threatened by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos), although studies indicate that Barombo Mbo lacks excess amounts of this gas.Freeth, S.J.; C.O. Ofoegbu; and K.M. Onuoha (1992). Natural Hazards in West a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stomatepia
''Stomatepia'' is a genus of cichlids endemic to Lake Barombi Mbo in western Cameroon. Although generally recognized as distinct, the genus is very close to ''Sarotherodon''. The ''Stomatepia'' species are all recognized as critically endangered by the IUCN because of pollution and sedimentation due to human activities. They are potentially also threatened by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos), although studies indicate that Barombo Mbo lacks excess amounts of this gas. '' Konia'', ''Myaka'' and ''Pungu'' are three other equally threatened genera of ciclids that also are endemic to Lake Barombi Mbo. Species There are currently three recognized species in this genus: * ''Stomatepia mariae'' (Holly, 1930) (Nsess) * ''Stomatepia mongo'' Trewavas, 1972 (Mongo) * ''Stomatepia pindu The pindu (''Stomatepia pindu'') is a critically endangered species of cichlid endemic to Lake Barombi Mbo in western Cameroon. Description The norma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Konia (fish)
''Konia'' is a small genus of critically endangered cichlids endemic to Lake Barombi Mbo in western Cameroon. Although generally recognized as distinct, the genus is very close to ''Sarotherodon''.Martin; Cutler; Friel; Touokong; Coop; and Wainwright (2015). Complex histories of repeated gene flow in Cameroon crater lake cichlids cast doubt on one of the clearest examples of sympatric speciation. Evolution 69-6: 1406–1422. The ''Konia'' species are threatened because of pollution and sedimentation due to human activities. They are potentially also threatened by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos), although studies indicate that Barombo Mbo lacks excess amounts of this gas. ''Myaka'', ''Pungu'' and ''Stomatepia'' are three other equally threatened genera of cichlids that also are endemic to Lake Barombi Mbo. Species There are currently two recognized species in this genus: * ''Konia dikume'' Trewavas, 1972 (Dikume) * ''Konia eisen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cichlid
Cichlids are fish from the family Cichlidae in the order Cichliformes. Cichlids were traditionally classed in a suborder, the Labroidei, along with the wrasses ( Labridae), in the order Perciformes, but molecular studies have contradicted this grouping. The closest living relative of cichlids is probably the convict blenny, and both families are classified in the 5th edition of ''Fishes of the World'' as the two families in the Cichliformes, part of the subseries Ovalentaria. This family is both large and diverse. At least 1,650 species have been scientifically described, making it one of the largest vertebrate families. New species are discovered annually, and many species remain undescribed. The actual number of species is therefore unknown, with estimates varying between 2,000 and 3,000. Many cichlids, particularly tilapia, are important food fishes, while others, such as the ''Cichla'' species, are valued game fish. The family also includes many popular freshwater aquariu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
