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Kosovia
''Bulinus'' is a genus of small tropical freshwater snails, aquatic gastropod mollusks in the family Bulinidae, the ramshorn snails and their allies. MolluscaBase eds. (2020). MolluscaBase. Bulinus O. F. Müller, 1781. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=224352 on 2020-06-27 This genus is medically important because several species of ''Bulinus'' function as intermediate hosts for the schistosomiasis blood fluke. Taxonomy Miocene genus ''Kosovia'' was synonymized ''Bulinus'' in 2017. Distribution These snails are widespread in Africa including Madagascar and the Middle East. This genus has not yet become established in the USA, but it is considered to represent a potentially serious threat as a pest, an invasive species which could negatively affect agriculture, natural ecosystems, human health or commerce. Therefore it has been suggested that this species be given top national quarantine significance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulinus Wrighti
''Bulinus wrighti'' is a species of small tropical air-breathing freshwater snail with a sinistral shell, an aquatic animal, aquatic pulmonate gastropod mollusk in the family (biology), family Planorbidae, the ramshorn snails and their allies.Brown D. S. (1994). ''Freshwater Snails of Africa and their Medical Importance''. Taylor & Francis. . pages 260-261. Distribution The type locality (biology), type locality is Wadi Hatib, at about 1280 m,southeast of Nisab District, Upper Aulaqui District at Rassais, South Yemen. References Bulinus Gastropods described in 1965 {{Planorbidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invasive Species
An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native species that become harmful to their native environment after human alterations to its food webfor example the purple sea urchin (''Strongylocentrotus purpuratus'') which has decimated kelp forests along the northern California coast due to overharvesting of its natural predator, the California sea otter (''Enhydra lutris''). Since the 20th century, invasive species have become a serious economic, social, and environmental threat. Invasion of long-established ecosystems by organisms is a natural phenomenon, but human-facilitated introductions have greatly increased the rate, scale, and geographic range of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulinus Jousseaumei
''Bulinus jousseaumei'' is a species of tropical freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ramshorn snails and their allies. Like other planorbids, the shell of the species is sinistral in coiling. Distribution The distribution of ''Bulinus jousseaumei'' includes Western Africa: * Burkina Faso * Gambia * Mali * Niger * Nigeria * Senegal * Togo The type locality for this species is the Sénégal River close to Médine, Mali.Brown D. S. (1994). ''Freshwater Snails of Africa and their Medical Importance''. Taylor & Francis. . pages 228, 504. Description The width of the shell is 8 mm. The height of the shell is 11 mm. Diploid chromosome number is 2n = 36. Ecology This snail lives in permanent streams. It can live in a water current that has a speed up to 0.86 m·s−1 based on laboratory experiments. The male part of the reproductive system is developed "slightly earlier" (protandry) in ''Bulinus jousseaumei''. This species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulinus Hightoni
''Bulinus hightoni'' is a species of freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails. Distribution This species is endemic to Kenya, Africa. Habitat This snail lives in rivers, intermittent rivers, and shrub-dominated wetlands. The survival of hits species 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 Bulinus Endemic molluscs of Kenya Gastropods described in 1978 Taxonomy articles created by Polbot {{Planorbidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulinus Globosus
''Bulinus globosus'' is a species of a tropical freshwater snail with a sinistral shell, an aquatic gastropod mollusk in the family Planorbidae, the ramshorn snails and their allies. Parasites ''Bulinus globosus'' is an intermediary host of ''Schistosoma haematobium'', along with ''Bulinus truncatus ''Bulinus truncatus'' is a species of air-breathing freshwater snail with a sinistral shell, an aquatic pulmonate gastropod mollusk in the subfamily Bulininae of the family Bulinidae, the ram's horn snails and the like. MolluscaBase eds. (2 ...''. References Further reading * External links Bulinus Gastropods described in 1866 {{Planorbidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulinus Africanus
''Bulinus africanus'' is a species of a tropical freshwater snail with a sinistral shell, an aquatic gastropod mollusk in the family 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 ins ..., the ramshorn snails and their allies. References Further reading * Bulinus Gastropods described in 1848 Taxa named by Christian Ferdinand Friedrich Krauss {{Planorbidae-stub ... [...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] |
Bulinus Abyssinicus
''Bulinus abyssinicus'' is a species of tropical freshwater snail with a sinistral shell, an aquatic gastropod mollusk in the family Planorbidae, the ramshorn snails and their allies. The specific name ''abyssinicus'' is after Abyssinia, which was the historic name for the Ethiopian Empire, where its type locality is. Distribution The distribution of ''Bulinus abyssinicus'' includes the Lower Valley of the Awash, Ethiopia and Somalia. The type locality is "southern Abyssinia", which means the Ethiopian Empire, now Ethiopia. Description The width of the shell is 9 mm. The height of the shell is 14 mm. The diploid chromosome number is 2n = 36. Ecology This small snail resides in marshes and in pools. This species is an intermediate host for ''Schistosoma bovis'' and ''Schistosoma haematobium''.Brown D. S. (1994). ''Freshwater Snails of Africa and their Medical Importance''. Taylor & Francis. . pages 225-226, 333-334. References Further reading * Ahmed M. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulinus Mutandensis
''Bulinus mutandensis'' is a species of freshwater gastropod in the Planorbidae family. It is endemic to Uganda. Its natural habitat is 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 Bulinus Endemic fauna of Uganda Gastropods described in 1913 Taxonomy articles created by Polbot {{Planorbidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allozymes
Alloenzymes (or also called allozymes) are variant forms of an enzyme which differ structurally but not functionally from other allozymes coded for by different alleles at the same locus. These are opposed to isozymes, which are enzymes that perform the same function, but which are coded by genes located at different loci. Alloenzymes are common biological enzymes that exhibit high levels of functional evolutionary conservation throughout specific phyla and kingdoms. They are used by phylogeneticists as molecular markers to gauge evolutionary histories and relationships between different species. This can be done because allozymes do not have the same structure. They can be separated by capillary electrophoresis. However, some species are monomorphic for many of their allozymes which would make it difficult for phylogeneticists to assess the evolutionary histories of these species. In these instances, phylogeneticists would have to use another method to determine the evolutionary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ploidy
Ploidy () is the number of complete sets of chromosomes in a cell (biology), cell, and hence the number of possible alleles for Autosome, autosomal and Pseudoautosomal region, pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair, which chromosomes naturally exist as. Somatic cells, Tissue (biology), tissues, and Individual#Biology, individual organisms can be described according to the number of sets of chromosomes present (the "ploidy level"): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploidy, polyploid is often used to describe cells with three or more chromosome sets. Virtually all sexual reproduction, sexually reproducing organisms are made up of somatic cells that are diploid or greater, but ploidy level may vary widely between different or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Complex
In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each other, further blurring any distinctions. Terms that are sometimes used synonymously but have more precise meanings are cryptic species for two or more species hidden under one species name, sibling species for two (or more) species that are each other's closest relative, and species flock for a group of closely related species that live in the same habitat. As informal taxonomic ranks, species group, species aggregate, macrospecies, and superspecies are also in use. Two or more taxa that were once considered conspecific (of the same species) may later be subdivided into infraspecific taxa (taxa within a species, such as bacterial strains or plant varieties), that is complex but it is not a species complex. A species complex is in most cas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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