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Ampharetidae
Ampharetidae are a family of terebellid "bristle worm" ( class Polychaeta). As such, they belong to the order Canalipalpata, one of the three main clades of polychaetes. They appear to be most closely related to the peculiar alvinellids (Alvinellidae) which inhabit the deep sea, and somewhat less closely to the well-known trumpet worms (Pectinariidae). These three appear to form one of the main clades of terebellids. Almost all are (like polychaetes in general) marine organisms; some inhabit brackish or freshwater though. Most are smallish deposit feeders which frequently live in small tubes they build from mud or similar substrate, or burrow in the sand. Subfamilies and genera In 2001, Rouse and Pleijel divided the Ampharetidae into three subfamilies: the large Ampharetinae, the much smaller Melinninae, and the monotypic Uschakovinae. Also, there are some ampharetid genera ''incertae sedis'' or in a quite basal position: * '' Aryandes'' * '' Pavelius'' * '' Rytocephal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ampharetinae
Ampharetinae are a subfamily of terebellid "bristle worm" ( class Polychaeta). They are the largest subfamily of the Ampharetidae, of which they contain the great majority of the described genera. The majority of ampharetines are marine organisms like usual for polychaetes. However, some members of this subfamily are among the rare euryhaline polychaetes, inhabiting brackish and freshwater habitat. They are generally smallish deposit feeders which frequently live in small tubes they build from mud or similar substrate, or burrow in the sand. Genera The World Register of Marine Species recognizes the following 47 genera: * '' Abderos'' Schüller & Jirkov, 2013 * '' Adercodon'' Mackie, 1994 * '' Alkmaria'' Horst, 1919 * '' Ampharana'' Hartman, 1967 * '' Ampharete'' Malmgren, 1866 * '' Amphicteis'' Grube, 1850 * '' Amythas'' Benham, 1921 * '' Amythasides'' Eliason, 1955 * '' Andamanella'' Holthe, 2002 * '' Anobothrus'' Levinsen, 1884 * '' Auchenoplax'' Ehlers, 1887 * '' Dece ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terebellida
Terebellida make up an order of the Polychaeta class, commonly referred to as "bristle worms". Together with the Sabellida, the Spionida and some enigmatic families of unclear taxonomic relationship (e.g. the Saccocirridae), they make up the subclass Canalipalpata, one of the three main clades of polychaetes. Like most polychaetes, almost all members of the ''Terebellida'' are marine organisms. Most are small, sessile detritivores (deposit feeders) which live in small tubes they build from mud or similar substrate, or burrow in the sand. Their central nervous system displays characteristic apomorphies. Systematics There is little consensus on the number of families. Some treatments accept as little as five, while other authors list over a dozen. Here, the more inclusive view of the Terebellida is followed, based on a major review of polychaete systematics. Cladistic studies have hitherto only analyzed a rather small proportion of polychaetes; hence it may be that some of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polychaeta
Polychaeta () is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. More than 10,000 species are described in this class. Common representatives include the lugworm (''Arenicola marina'') and the sandworm or clam worm ''Alitta''. Polychaetes as a class are robust and widespread, with species that live in the coldest ocean temperatures of the abyssal plain, to forms which tolerate the extremely high temperatures near hydrothermal vents. Polychaetes occur throughout the Earth's oceans at all depths, from forms that live as plankton near the surface, to a 2- to 3-cm specimen (still unclassified) observed by the robot ocean probe ''Nereus'' at the bottom of the Challenger Deep, the deepest known spot in the Earth's oceans. Only 168 species (less than 2% of all polychaetes) are known from f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canalipalpata
Canalipalpata, also known as bristle-footed annelids or fan-head worms, is an order of polychaete worms, with 31 families in it including the suborder Sabellida (families Serpulidae (tubeworms) and Sabellidae (fanworms and feather duster worms) and the Alvinellidae, a family of deep-sea worms associated with hydrothermal vents. The Canalipalpata have no teeth or jaws. Most are filter feeders. They have grooved palpi, which are covered in cilia. These cilia are used to transport food particles to the mouth. However, the cilia and grooves have been lost in the Siboglinidae family. Fossil record The earliest known member of the Canalipalpata is '' Terebellites franklini'', which was found in the Clouds Rapids Formation of Newfoundland, and dates from the mid Cambrian (St David's series). Use in aquaria Many species of Canalipalpata are visually attractive. Fanworms and Christmas tree worms (a type of serpulid) are recommended as species for beginners to keep in a marine aquar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anders Johan Malmgren
Anders Johan Malmgren (21 November 1834 – 14 April 1897) was a Finnish zoologist and government official. Malmgren was a student in Helsinki in 1854, Master primus 1860, PhD 1864, Acting Commissioner of the fisheries in 1865, extraordinary professor of zoology at the University of Helsinki in 1869, Fishery Commissioner in 1877 and governor of the Oulu province in 1889. Malmgren undertook several scientific expeditions, especially in the northern latitudes, to the White Sea (1856) and to Spitsbergen and Finnmark as a participant in the first three Swedish expeditions (1861, 1864 and 1868). His most important scientific work involving the boreal region's fauna and flora; These include ''Kritisk öfversigt af Finlands fiskfauna'' (1863), ''Anteckningar om Spetsbergens fågelfauna'' (1863–64), ''Iakttagelser och anteckningar till Finnmarkens och Spetsbergens däggdjursfauna'' (1865) and ''Bidrag till Finnmarkens fiskfauna'' (1867). His most important works - the fruit of his Nord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as the ''World List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aryandes (worm)
Aryandes (Old Iranian: ''Aryavanda'' or ''Arvanta'', Ancient Greek: ''Ἀρυάνδης'') was the first Achaemenid satrap of ancient Egypt between 525 BCE and 496 BCE, during the early 27th Dynasty of Egypt. Career When king Cambyses II defeated pharaoh Psamtik III at the battle of Pelusium (525 BCE), Egypt became a satrapy of the Achaemenid empire, and Aryandes was appointed satrap shortly after. In 522 BCE, Aryandes was overthrown in a revolt against the Achaemenid rule led by a native Egyptian pharaoh, Petubastis III. The rebellion was personally quelled by the new king Darius I during his expedition to Egypt in 518 BCE, and Aryandes was reinstated. The satrap then attempted to subjugate Libya with poor results. Around 496 BCE, Aryandes fell out of favour with Darius I and was deposed and replaced by Pherendates. The reason for this decision is unknown, with Herodotus and later Polyaenus claiming that the satrap started minting his own silver coinage, calling it ''aryandic'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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