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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] |
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] |
Stomatepia Pindu
The pindu (''Stomatepia pindu'') is a critically endangered species of cichlid endemic to Lake Barombi Mbo in western Cameroon. Description The normal coloration of the pindu is solid black, lightening when breeding and even more so if stressed. Both sexes are similar in colour. The body is elongated with a pointed head and nose with a relatively large mouth. It is a relatively robust with a body depth of 30.0-37.0% of its length. The lateral line system on the head is markedly enlarged and a series of dark blotches along the sides is often marked. The maximum size for males is 9.1 cm. Distribution and habitat It is endemic to Lake Barombi Mbo, a volcanic crater lake with a diameter of just 3 miles in western Cameroon where only the top 40 metres contains acceptable oxygen levels to harbor vertebrate life. Habits It is a predatory fish and reportedly is also a kleptoparasite on the freshwater crab '' Potamon africanus''. The spawning of the pindu is a rather simple process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stomatepia Mongo
''Stomatepia mongo'', the mongo, is a species of cichlid endemic to Lake Barombi Mbo in western Cameroon. It can reach a length of SL. This species is seriously threatened by 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. Even compared to other cichlids that are endemic Lake Barombi Mbo, ''Stomatepia mongo'' is a very rare species. Very little is known about its behavior, but it has been seen swimming near the bottom, apparently looking for small prey items in the detritus or sand. It sometimes occurs in small groups. References mongo Mongo may refer to: Geography Africa * Mongo, Chad, a Sahel city * Apostolic Vicariate of Mongo (Roman Catholic missionary juris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stomatepia Mariae
The nsess (''Stomatepia mariae'') is a species of cichlid endemic to Lake Barombi Mbo in western Cameroon. It can also be found in the aquarium trade. It is critically endangered 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. The nsess can reach up to in standard length and is predatory; it sometimes steals prey from the freshwater crab Around 1,300 species of freshwater crabs are distributed throughout the tropics and subtropics, divided among eight families. They show direct development and maternal care of a small number of offspring, in contrast to marine crabs, which relea ... '' Potamon africanus''. References External links Photograph Stomat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
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] |
Cichlid Genera
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 aquar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oreochromini
Oreochromini is a tribe of cichlids in the Pseudocrenilabrinae subfamily that is native to Africa and Western Asia, but a few species have been widely introduced to other parts of the world. It was formerly considered to be part of the tribe Tilapini but more recent workers have found that the Tilapini ''sensu lato'' is paraphyletic. Despite this change, species in Oreochromini are still referred to by the common name tilapia and some of the most important tilapia in aquaculture —certain species of ''Oreochromis'' and ''Sarotherodon''— are part of this tribe. In contrast, several species have small ranges and are seriously threatened; a few are already extinct ('' Tristramella sacra'') or possibly extinct (''Oreochromis ismailiaensis'' and '' O. lidole''). Cichlids in the tribe ''Oreochromini'' are mouthbrooders, carrying the eggs and fry in their mouths instead of placing them in a nest. The numerous ''Oreochromis'' species are maternal mouthbrooders, meaning only the femal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pungu
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] |
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] |
Cichlids
Cichlids are fish from the family (biology), 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 Pholidichthys leucotaenia, 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 Binomial nomenclature, scientifically described, making it one of the largest vertebrate families. New species are discovered annually, and many species remain Undescribed taxon, 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'' spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siltation
Siltation, is water pollution caused by particulate terrestrial clastic material, with a particle size dominated by silt or clay. It refers both to the increased concentration of suspended sediments and to the increased accumulation (temporary or permanent) of fine sediments on bottoms where they are undesirable. Siltation is most often caused by soil erosion or sediment spill. It is sometimes referred to by the ambiguous term "sediment pollution", which can also refer to a chemical contamination of sediments accumulated on the bottom, or to pollutants bound to sediment particles. Although "siltation" is not perfectly stringent, since it also includes particle sizes other than silt, it is preferred for its lack of ambiguity. Causes The origin of the increased sediment transport into an area may be erosion on land or activities in the water. In rural areas, the erosion source is typically soil degradation by intensive or inadequate agricultural practices, leading to soil eros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
