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Keratella Quadrata
''Keratella'' is a genus of Brachionidae. The genus was described in 1822 by Jean Baptiste Bory de Saint-Vincent. It has cosmopolitan distribution. Species: * ''Keratella cochlearis'' * ''Keratella hiemalis ''Keratella'' is a genus of Brachionidae. The genus was described in 1822 by Jean Baptiste Bory de Saint-Vincent. It has cosmopolitan distribution. Species: * ''Keratella cochlearis ''Keratella cochlearis'' is a rotifer. The planktonic anim ...'' * '' Keratella quadrata'' References External links Rotifer genera Brachionidae {{rotifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keratella Cochlearis
''Keratella cochlearis'' is a rotifer. The planktonic animal occurs worldwide in freshwater and marine habitats. Description ''Keratella cochlearis'' has an oval lorica, a shell-like protective outer cuticle. At the anterior end are three pairs of spines. The central pair curve towards the ventral surface, the next pair diverge slightly and the outer pair converge. There is a single red eye There is also a central funnel-shaped mouth and on either side of this are rings of cilia which twirl and help waft food particles into the mouth. They are also used for locomotion. There are two forms of this rotifer; some individuals have a long spine at the posterior end and others do not. Neither form has a foot. Distribution ''Keratella cochlearis'' is found worldwide in marine, brackish and freshwater habitats. Any body of standing water is likely to contain rotifers and ''Keratella cochlearis'' is probably the most common and widespread species in the world. Life cycle ''Keratella ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachionidae
Brachionidae is a family of rotifers belonging to the order Ploima. Genera: * '' Anuraeopsis'' Lauterborn, 1900 * ''Brachionus ''Brachionus'' is a genus of planktonic rotifers occurring in freshwater, alkaline and brackish water. Species Species included in ''Brachionus'' include: * '' Brachionus amsterdamensis'' De Smet, 2001 * '' Brachionus angularis'' Gosse, 1851 * ...'' Pallas, 1766 * '' Kellicottia'' Ahlstrom, 1938 * '' Keratella'' Bory de St.Vincent, 1822 * '' Notholca'' Gosse, 1886 * '' Plationus'' Segers, Murugan & Dumont, 1993 * '' Platyias'' Harring, 1913 * '' Schizocerca'' References Rotifer families Ploima {{rotifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Baptiste Bory De Saint-Vincent
Jean-Baptiste Geneviève Marcellin Bory de Saint-Vincent was a French naturalist, officer and politician. He was born on 6 July 1778 in Agen (Lot-et-Garonne) and died on 22 December 1846 in Paris. Biologist and geographer, he was particularly interested in volcanology, systematics and botany. Life Youth Jean-Baptiste Bory de Saint Vincent was born at Agen on 6 July 1778. His parents were Géraud Bory de Saint-Vincent and Madeleine de Journu; his father's family were petty nobility who played important roles at the bar and in the judiciary, during and after the French Revolution. Instilled with sentiments hostile to the revolution from childhood,Biography of Jean-Baptiste Bory de Saint-Vincent on the website of the French National Assembly: http://www2.assemblee-nationale.fr/sycomore/fiche/(num_dept)/16507 he studied first at the college of Agen, then with his uncle Journu-Auber in Bordeaux in 1787. He may have attended courses in medicine and surgery from 1791 to 1793. During ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmopolitan Distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The extreme opposite of a cosmopolitan species is an endemic one, being found only in a single geographical location. Qualification The caveat “in appropriate habitat” is used to qualify the term "cosmopolitan distribution", excluding in most instances polar regions, extreme altitudes, oceans, deserts, or small, isolated islands. For example, the housefly is highly cosmopolitan, yet is neither oceanic nor polar in its distribution. Related terms and concepts The term pandemism also is in use, but not all authors are consistent in the sense in which they use the term; some speak of pandemism mainly in referring to diseases and pandemics, and some as a term intermediate between endemism and cosmopolitanism, in effect regarding pandemism as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keratella Hiemalis
''Keratella'' is a genus of Brachionidae. The genus was described in 1822 by Jean Baptiste Bory de Saint-Vincent. It has cosmopolitan distribution. Species: * ''Keratella cochlearis ''Keratella cochlearis'' is a rotifer. The planktonic animal occurs worldwide in freshwater and marine habitats. Description ''Keratella cochlearis'' has an oval lorica, a shell-like protective outer cuticle. At the anterior end are three pairs ...'' * '' Keratella hiemalis'' * '' Keratella quadrata'' References External links Rotifer genera Brachionidae {{rotifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keratella Quadrata
''Keratella'' is a genus of Brachionidae. The genus was described in 1822 by Jean Baptiste Bory de Saint-Vincent. It has cosmopolitan distribution. Species: * ''Keratella cochlearis'' * ''Keratella hiemalis ''Keratella'' is a genus of Brachionidae. The genus was described in 1822 by Jean Baptiste Bory de Saint-Vincent. It has cosmopolitan distribution. Species: * ''Keratella cochlearis ''Keratella cochlearis'' is a rotifer. The planktonic anim ...'' * '' Keratella quadrata'' References External links Rotifer genera Brachionidae {{rotifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotifer Genera
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. John Harris in 1696, and other forms were described by Antonie van Leeuwenhoek in 1703. Most rotifers are around long (although their size can range from to over ), and are common in freshwater environments throughout the world with a few saltwater species. Some rotifers are free swimming and truly planktonic, others move by inchworming along a substrate, and some are sessile, living inside tubes or gelatinous holdfasts that are attached to a substrate. About 25 species are colonial (e.g., '' Sinantherina semibullata''), either sessile or planktonic. Rotifers are an important part of the freshwater zooplankton, being a major foodsource and with many species also contributing to the decomposition of soil organic matter. Most species of the roti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
