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Flabelligeridae
Flabelligeridae is a family of polychaete worms, known as bristle-cage worms, notable for their cephalic cage: long slender chaetae forming a fan-like arrangement surrounding the eversible (able to be turned inside-out) head. Unlike many polychaetes, they also have large, pigmented, complex eyes. Habitat These worms live under stones and are known to burrow into sand. They have a cosmopolitan distribution and live in a variety of marine habitats, from the deep sea The deep sea is broadly defined as the ocean depth where light begins to fade, at an approximate depth of 200 metres (656 feet) or the point of transition from continental shelves to continental slopes. Conditions within the deep sea are a combin ... to shallow coastal regions. Subdivisions The first species was '' Amphridite plumosa'', described from Norway. Flabelligerids were placed in various similar polychaete families until Saint-Joseph erected the family (under the name Flabelligeriens) in 1894. '' Mazop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flotidae
Flotidae is a family of pelagic polychaete worms, sometimes synonymized with Flabelligeridae, which they closely resemble. Other sources consider them the sister taxon to Flabelligeridae and closely allied to the latter group.Zhadan, A. E., and A. B. Tzetlin.Polychaetes from deep pelagic zone of the Mid-Atlantic ridge. ''Invertebr. Zool'' 5 (2008): 97-109. Taxonomy Flotidae originally contained one genus, ''Flota'', from which it derives its name, but a 2007 study also placed '' Buskiella'' in the family, and moved all (two) ''Flota'' species to ''Buskiella''. The family would thus contains one genus and three species, listed below. * '' Buskiella abyssorum'' McIntoch, 1885 * '' Buskiella flabelligera'' (Hartman, 1967) formerly ''Flota flabelligera'' * '' Buskiella vitjasi'' (Buzhinskaja, 1977) formerly ''Flota vitjasi'' Similarities and differences with Flabelligeridae A 2008 paper analyzing the phylogenetics In biology, phylogenetics (; from Greek φυλή/ φῦλ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flabelligera
''Flabelligera'' is a genus of polychaetes in the family Flabelligeridae. Species are common around the world, in both temperate and cold waters. ''Flabelligera'' species have long, club-like papillae, which are encased in a smooth mucus sheath. They also have a distinct cephalic cage (a fan-like arrangement of chaeta A chaeta or cheta (from Greek χαίτη “crest, mane, flowing hair"; plural: chaetae) is a chitinous bristle or seta found in annelid worms, (although the term is also frequently used to describe similar structures in other invertebrates such ...e around the head), and hooked neurochaeatae (ventral chaetae) which they use to hold onto rocks. Flabelligera species are preyed on by a number of fish. They are most often found in waters with a temperature between 6.3 and 12.9 °C. Species list * '' Flabelligera affinis,'' the flabby bristle-worm Sars, 1829 * '' Flabelligera bicolor'' (Schmarda, 1824) * '' Flabelligera biscayensis'' Kolmer, 1985 * '' Flabe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brada (polychaete)
''Brada'' is a genus of polychaetes belonging to the family Flabelligeridae Flabelligeridae is a family of polychaete worms, known as bristle-cage worms, notable for their cephalic cage: long slender chaetae forming a fan-like arrangement surrounding the eversible (able to be turned inside-out) head. Unlike many polychae .... The genus has cosmopolitan distribution. Species: *'' Brada annenkovae'' *'' Brada arctica'' *'' Brada bransfieldia'' *'' Brada brevis'' *'' Brada ferruginea'' *'' Brada granosa'' *'' Brada granulosa'' *'' Brada incrustata'' *'' Brada inhabilis'' *'' Brada kudenovi'' *'' Brada mammillata'' *'' Brada marchilensis'' *'' Brada nuda'' *'' Brada ochotensis'' *'' Brada pluribranchiata'' *'' Brada rugosa'' *'' Brada sachalina'' *'' Brada strelzovi'' *'' Brada sublaevis'' *'' Brada talehsapensis'' *'' Brada tzetlini'' *'' Brada verrucosa'' *'' Brada whiteavesii'' References {{Taxonbar, from=Q3906400 Annelids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diplocirrus Glaucus
''Diplocirrus glaucus'' is a species of marine polychaete found in ocean bottoms often consisting of mud, sand, shells or gravel. It eats detritus and microorganisms. It is found in the Arctic, Mediterranean, and the eastern North Atlantic oceans to a depth of 750 meters. Morphology It has a spindle-shaped front body, changing to a more cylindrical form at the back end. The prostomium has four eyes and two long palps. The peristomium has four short, finger-shaped and four longer, threadlike gills. All gills are often retracted into the body. Body colour varies from pearl-grey to silver-white with a length up to 25 mm. Ecology It lives on the ocean floor where it digs tunnels that are supported by slime secreted from the worm. Here it feeds on detritus and microorganisms. References {{Taxonbar, from=Q2281079 Terebellida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaeta
A chaeta or cheta (from Greek χαίτη “crest, mane, flowing hair"; plural: chaetae) is a chitinous bristle or seta found in annelid worms, (although the term is also frequently used to describe similar structures in other invertebrates such as arthropods). Polychaete annelids, ('polychaeta' literally meaning "many bristles") are named for their chaetae. In Polychaeta, chaetae are found as bundles on the parapodia, paired appendages on the side of the body. The chaetae are epidermal extracellular structures, and clearly visible in most polychaetes. They are probably the best studied structures in these animals. Use in taxonomy and identification The ultrastructure of chaetae is fundamentally similar for all taxa but there is vast diversity in chaetal morphology. Moreover, chaetae bear precise characters for determination of species and taxonomic assessment. The shape, absolute and relative size, number, position, ornamentation and type are important taxonomic characters an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Sea
The deep sea is broadly defined as the ocean depth where light begins to fade, at an approximate depth of 200 metres (656 feet) or the point of transition from continental shelves to continental slopes. Conditions within the deep sea are a combination of low temperatures, darkness and high pressure The deep sea is considered the least explored Earth biome, with the extreme conditions making the environment difficult to access and explore. Organisms living within the deep sea have a variety of adaptations to survive in these conditions. Organisms can survive in the deep sea through a number of feeding methods including scavenging, predation and filtration, with a number of organisms surviving by feeding on marine snow. Marine snow is organic material that has fallen from upper waters into the deep sea. In 1960, the bathyscaphe ''Trieste'' descended to the bottom of the Mariana Trench near Guam, at , the deepest known spot in any ocean. If Mount Everest () were submerged there, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intertidal Zone
The intertidal zone, also known as the foreshore, is the area above water level at low tide and underwater at high tide (in other words, the area within the tidal range). This area can include several types of habitats with various species of life, such as seastars, sea urchins, and many species of coral with regional differences in biodiversity. Sometimes it is referred to as the ''littoral zone'' or '' seashore'', although those can be defined as a wider region. The well-known area also includes steep rocky cliffs, sandy beaches, bogs or wetlands (e.g., vast mudflats). The area can be a narrow strip, as in Pacific islands that have only a narrow tidal range, or can include many meters of shoreline where shallow beach slopes interact with high tidal excursion. The peritidal zone is similar but somewhat wider, extending from above the highest tide level to below the lowest. Organisms in the intertidal zone are adapted to an environment of harsh extremes, living in water p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Diversity (journal)
Species diversity is the number of different species that are represented in a given community (a dataset). The effective number of species refers to the number of equally abundant species needed to obtain the same mean proportional species abundance as that observed in the dataset of interest (where all species may not be equally abundant). Meanings of species diversity may include species richness, taxonomic or phylogenetic diversity, and/or species evenness. Species richness is a simple count of species. Taxonomic or phylogenetic diversity is the genetic relationship between different groups of species. Species evenness quantifies how equal the abundances of the species are.Hill, M. O. (1973) Diversity and evenness: a unifying notation and its consequences. Ecology, 54, 427–432Tuomisto, H. (2010) A diversity of beta diversities: straightening up a concept gone awry. Part 1. Defining beta diversity as a function of alpha and gamma diversity. Ecography, 33, 2-22. Tuomisto, H. 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annenkova (polychaete)
Annenkov (russian: Анненков) or Annenkova (russian: Анненкова; feminine) is a Russian surname. Notable people with the surname include: *Andriy Annenkov (born 1969), Ukrainian football player *Irina Annenkova (born 1999), Russian rhythmic gymnast *Mikhail Annenkov (1835–1899), Russian nobleman, author, military officer and engineer *Nikolay Annenkov (1899–1999), Soviet actor *Nicholas Annenkov (1799–1865), Russian general *Pavel Annenkov (1813–1887), Russian literary critic *Varvara Annenkova (1795–1866), Russian poet *Yury Annenkov Yury Pavlovich Annenkov (russian: Юрий Павлович Анненков also known as Georges Annenkov); in Petropavlovsk, Akmolinsk Oblast, Russian Empire – 12 July 1974 in Paris, France),Names by which he is credited for his work ..., also known as Georges Annenkov, (1889–1974), Russian artist See also * Annenkov Island, off South Georgia {{surname, Annenkov Russian-language surnames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pherusa Plumosa
Pherusa or Pherousa (Ancient Greek: Φέρουσά means 'the bringer') was the name of two female deities in Greek mythology: * Pherusa, one of the 50 Nereids, marine-nymph daughters of the 'Old Man of the Sea' Nereus and the Oceanid Doris. Her name, a participle, means "she who carries." She, along with her sister Dynamene, were associated with the power of great ocean swells. Pherousa and her other sisters appear to Thetis when she cries out in sympathy for the grief of Achilles at the slaying of his friend Patroclus.Homer, ''Iliad'18.39-51/ref> * Pherusa, counted by some authors as one of the Horae, goddess of substance and farm estates.Hyginus, ''Fabulae'' 183 Notes References * Aken, Dr. A.R.A. van. (1961). ''Elseviers Mythologische Encyclopedie''. Amsterdam: Elsevier. * Apollodorus, ''The Library'' with an English Translation by Sir James George Frazer, F.B.A., F.R.S. in 2 Volumes, Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1921. ISBN ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazopherusa
''Mazopherusa'' is a genus of flabelligerid annelid worm, known only from the Pennsylvanian Mazon Creek Lagerstatte; it is the only ''bona fide'' fossil member of the family. References {{paleo-protostome-stub Terebellida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
