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Burnupia
''Burnupia'' is a genus of small freshwater snails or limpets, aquatic gastropod mollusks that are traditionally placed in the family Planorbidae. However, according to the molecular markers ( COI, 18S rRNA), the genus ''Burnupia'' differs from ancylids and from Planorboidea.Albrecht C., Wilke T., Kuhn K., Streit B. (2004). "Convergent evolution of shell shape in freshwater limpets: the African genus ''Burnupia''". ''Zoological Journal of the Linnean Society'' 140(4): 577-586. . Distribution This genus is generally confined to Africa and Brazil.Brown D. S. (1994). ''Freshwater Snails of Africa and their Medical Importance''. Taylor & Francis. . Species The number of species in the genus ''Burnupia'' is highly uncertain and there are 21 specific names recognized. Also in 2011 IUCN Red List there are recognized 21 species: 19 of them are Data Deficient, and '' Burnupia crassistriata'' and '' Burnupia stuhlmanni'' with Near Threatened A near-threatened species is a spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burnupia Caffra
''Burnupia'' is a genus of small freshwater snails or limpets, aquatic gastropod mollusks that are traditionally placed in the family Planorbidae. However, according to the molecular markers ( COI, 18S rRNA), the genus ''Burnupia'' differs from ancylids and from Planorboidea.Albrecht C., Wilke T., Kuhn K., Streit B. (2004). "Convergent evolution of shell shape in freshwater limpets: the African genus ''Burnupia''". ''Zoological Journal of the Linnean Society'' 140(4): 577-586. . Distribution This genus is generally confined to Africa and Brazil.Brown D. S. (1994). ''Freshwater Snails of Africa and their Medical Importance''. Taylor & Francis. . Species The number of species in the genus ''Burnupia'' is highly uncertain and there are 21 specific names recognized. Also in 2011 IUCN Red List there are recognized 21 species: 19 of them are Data Deficient, and '' Burnupia crassistriata'' and '' Burnupia stuhlmanni'' with Near Threatened A near-threatened species is a spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burnupia Brunnea
''Burnupia'' is a genus of small freshwater snails or limpets, aquatic gastropod mollusks that are traditionally placed in the family Planorbidae. However, according to the molecular markers ( COI, 18S rRNA), the genus ''Burnupia'' differs from ancylids and from Planorboidea.Albrecht C., Wilke T., Kuhn K., Streit B. (2004). "Convergent evolution of shell shape in freshwater limpets: the African genus ''Burnupia''". ''Zoological Journal of the Linnean Society'' 140(4): 577-586. . Distribution This genus is generally confined to Africa and Brazil.Brown D. S. (1994). ''Freshwater Snails of Africa and their Medical Importance''. Taylor & Francis. . Species The number of species in the genus ''Burnupia'' is highly uncertain and there are 21 specific names recognized. Also in 2011 IUCN Red List there are recognized 21 species: 19 of them are Data Deficient, and '' Burnupia crassistriata'' and '' Burnupia stuhlmanni'' with Near Threatened status.IUCN (2011). IUCN Red List of Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burnupia Alta
''Burnupia'' is a genus of small freshwater snails or limpets, aquatic gastropod mollusks that are traditionally placed in the family Planorbidae. However, according to the molecular markers ( COI, 18S rRNA), the genus ''Burnupia'' differs from ancylids and from Planorboidea.Albrecht C., Wilke T., Kuhn K., Streit B. (2004). "Convergent evolution of shell shape in freshwater limpets: the African genus ''Burnupia''". ''Zoological Journal of the Linnean Society'' 140(4): 577-586. . Distribution This genus is generally confined to Africa and Brazil.Brown D. S. (1994). ''Freshwater Snails of Africa and their Medical Importance''. Taylor & Francis. . Species The number of species in the genus ''Burnupia'' is highly uncertain and there are 21 specific names recognized. Also in 2011 IUCN Red List there are recognized 21 species: 19 of them are Data Deficient, and '' Burnupia crassistriata'' and '' Burnupia stuhlmanni'' with Near Threatened status.IUCN (2011). IUCN Red List of Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burnupia Stuhlmanni
''Burnupia stuhlmanni'' is a species of small freshwater snail or limpet, an aquatic gastropod mollusk which was traditionally placed in the family Planorbidae, the ram's horn snails and their allies. Distribution This freshwater limpet is found in Kenya, Tanzania, and Uganda. Its natural habitats are rivers and freshwater lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...s. References Planorbidae Taxa named by Eduard von Martens Gastropods described in 1897 Taxonomy articles created by Polbot {{Planorbidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burnupia Crassistriata
''Burnupia crassistriata'' is a species of small freshwater snail or limpet, an aquatic gastropod mollusk which was traditionally placed in the family Planorbidae, the ram's horn snails and their allies. It was previously listed as a vulnerable species in the ''IUCN Red List of Threatened Species'' (2004). Distribution This species of freshwater limpet is endemic to Kenya. Its natural habitat is rivers. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References Planorbidae Endemic molluscs of Kenya Gastropods described in 1911 Taxonomy articles created by Polbot {{Planorbidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planorbidae
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs. Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instead of copper-based hemocyanin. As a result, planorbids are able to breathe oxygen more efficiently than other molluscs. The presence of hemoglobin gives the body a reddish colour. This is especially apparent in albino animals. Being air breathers like other ''Panpulmonata'', planorbids do not have gills, but instead have a lung. The foot and head of planorbids are rather small, while their thread-like tentacles are relatively long. Many of the species in this family have coiled shells that are planispiral, in other words, the shells are more or less coiled flat, rather than having an elevated spire as is the case in most gastropod shells. Although they carry their shell in a way that makes it appear to be dextral, the shell of coiled pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancylid
Ancylini is a tribe of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies. This tribe used to be treated as a family; the current taxonomic placement within Planorbidae is according to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005). Anatomy These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch" which can serve perfectly well as a gill in situations where the limpet is unable to reach the surface for air, as is often the case. Genera Genera in the tribe Ancylini include: * ''Ancylus'' Müller, 1773 - type genus * '' Pseudancylus'' * '' Rhodocephala'' * ''Ferrissia'' Walker, 1903 * ''Rhodacmea'' Walker, 1917 * '' Sineancylus'' Gutiérrez Gregoric, 2014 * ''Anisancylus'' Pilsbry & Vanatta, 1924 * ''Burnupia'' Walker, 1912 * '' Gundlachia'' Pfeiffer, 1849 * '' Hebetancylus'' Pilsbry, 1914 * '' Laevapex'' Walker, 190 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MT-CO1
Cytochrome c oxidase I (COX1) also known as mitochondrially encoded cytochrome c oxidase I (MT-CO1) is a protein that in humans is encoded by the ''MT-CO1'' gene. In other eukaryotes, the gene is called ''COX1'', ''CO1'', or ''COI''. Cytochrome c oxidase I is the main subunit of the cytochrome c oxidase complex. Mutations in MT-CO1 have been associated with Leber's hereditary optic neuropathy (LHON), acquired idiopathic sideroblastic anemia, Complex IV deficiency, colorectal cancer, sensorineural deafness, and recurrent myoglobinuria. Structure One of 37 mitochondrial genes, the ''MT-CO1'' gene is located from nucleotide pairs 5904 to 7444 on the guanine-rich heavy (H) section of mtDNA. The gene product is a 57 kDa protein composed of 513 amino acids. Function Cytochrome c oxidase subunit I (CO1 or MT-CO1) is one of three mitochondrial DNA (mtDNA) encoded subunits (MT-CO1, MT-CO2, MT-CO3) of respiratory complex IV. Complex IV is the third and final enzyme of the electron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Near Threatened
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify for the threatened status. The IUCN notes the importance of re-evaluating near-threatened taxon at appropriate intervals. The rationale used for near-threatened taxa usually includes the criteria of vulnerable which are plausible or nearly met, such as reduction in numbers or range. Near-threatened species evaluated from 2001 onwards may also be ones which are dependent on conservation efforts to prevent their becoming threatened, whereas before this conservation-dependent species were given a separate category ("Conservation Dependent"). Additionally, the 402 conservation-dependent taxa may also be considered near-threatened. IUCN Categories and Criteria version 2.3 Before 2001, the IUCN used the version 2.3 Categories and Criteria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Deficient
A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily indicate that the species has not been extensively studied; but it does indicate that little or no information is available on the abundance and distribution of the species. The IUCN recommends that care be taken to avoid classing species as "data deficient" when the absence of records may indicate dangerously low abundance: "If the range of a taxon is suspected to be relatively circumscribed, if a considerable period of time has elapsed since the last record of the taxon, threatened status may well be justified""The Categories," in IUCN (1983). (see also precautionary principle). See also * IUCN Red List data deficient species * List of data deficient amphibians * IUCN Red List data deficient species (Annelida) * List of data deficien ... [...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] |
Taylor & Francis
Taylor & Francis Group is an international company originating in England that publishes books and academic journals. Its parts include Taylor & Francis, Routledge, F1000 (publisher), F1000 Research or Dovepress. It is a division of Informa, Informa plc, a United Kingdom–based publisher and conference company. Overview The company was founded in 1852 when William Francis (chemist), William Francis joined Richard Taylor (editor), Richard Taylor in his publishing business. Taylor had founded his company in 1798. Their subjects covered agriculture, chemistry, education, engineering, geography, law, mathematics, medicine, and social sciences. Francis's son, Richard Taunton Francis (1883–1930), was sole partner in the firm from 1917 to 1930. In 1965, Taylor & Francis launched Wykeham Publications and began book publishing. T&F acquired Hemisphere Publishing in 1988, and the company was renamed Taylor & Francis Group to reflect the growing number of Imprint (trade name), imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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