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Enchytraeidae
Enchytraeidae is a family of microdrile oligochaetes. They resemble small earthworms and include both terrestrial species known as potworms that live in highly organic terrestrial environments, as well as some that are marine. The peculiar genus ''Mesenchytraeus'' is known as "ice worms", as they live in glaciers and will die if exposed to temperatures a few degrees above freezing. Apart from these, the best-known species is probably the Grindal Worm (''Enchytraeus buchholzi''), which is commercially bred as aquarium fish food. Selected genera Enchytraeidae genera include:WoRMS (2010) * ''Achaeta'' Vejdovský, 1878 * '' Archienchytraeus'' Eisen, 1878 ('' nomen dubium'') * ''Cernosvitoviella'' Nielsen & Christensen, 1959 * '' Christensenidrilus'' Dózsa-Farkas & Convey, 1998 (= ''Christensenia'' Dózsa-Farkas & Convey, 1997 (''non'' Brinck 1945: preoccupied)) * ''Cognettia'' Nielsen & Christensen, 1959 * '' Enchytraeina'' Bülow, 1957 * ''Enchytraeus'' * '' Epitelphusa'' Drago, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesenchytraeus
Ice worms (also written as ice-worms or iceworms) are enchytraeid annelids of the genus ''Mesenchytraeus''. The majority of the species in the genus are abundant in gravel beds or the banks of riverine habitats, but the best-known members of the genus are found in glacier, glacial ice. They include the only annelid worms known to spend their entire lives in glacier, glacial ice, and some of the few metazoans to complete their entire life cycle at conditions below . They were discovered in a wide range of environments, which include level snowfields, steep avalanche cones, crevasse walls, glacial rivers and pools, and hard glacier ice. These organisms are unique in that they can simply move between tightly packed ice crystals. They utilize setae, which are small bristles found on the outside of their bodies, to grip the ice and pull themselves along. The genus contains 77 species, including the North American glacier ice worm (''Mesenchytraeus solifugus'') and the Yosemite snow w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fridericia (animal)
''Fridericia'' is a genus of annelids of the family Enchytraeidae. The genus was described in 1889 by Wilhelm Michaelsen Johann Wilhelm Michaelsen (9 October 1860, Hamburg - 18 February 1937) was a German zoologist who was a world authority on the Oligochaeta which includes the earthworms. He named and described more than a thousand new species. Michaelsen was bor .... References Enchytraeidae {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligochaeta
Oligochaeta () is a subclass of animals in the phylum Annelida, which is made up of many types of aquatic and terrestrial worms, including all of the various earthworms. Specifically, oligochaetes comprise the terrestrial megadrile earthworms (some of which are semiaquatic or fully aquatic), and freshwater or semiterrestrial microdrile forms, including the tubificids, pot worms and ice worms ( Enchytraeidae), blackworms ( Lumbriculidae) and several interstitial marine worms. With around 10,000 known species, the Oligochaeta make up about half of the phylum Annelida. These worms usually have few setae (chaetae) or "bristles" on their outer body surfaces, and lack parapodia, unlike polychaeta. Diversity Oligochaetes are well-segmented worms and most have a spacious body cavity (coelom) used as a hydroskeleton. They range in length from less than up to in the 'giant' species such as the giant Gippsland earthworm (''Megascolides australis'') and the Mekong worm (''Amynth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grania
''Grania'' is a genus of marine annelid worms in the class Clitellata. They are found at many depths in sands throughout the world. They are generally about in length and mostly colorless or white, though ''Grania colorata'', a recently discovered species found in the Great Barrier Reef, is green. Species There are 72 species in the genus ''Grania'' which have been identified. They include:Prantoni, Alessandro L., De Wit, Pierre & Christer Erséus Christer Erséus, born 1951 in Borås, is a Swedish zoologist. He defended his doctoral dissertation in 1980 at the University of Gothenburg, where in 1991 he became professor of zoology and director of studies in zoomorphology and systematics. P ... (2016). First reports of ''Grania'' (Clitellata: Enchytraeidae) from Africa and South America: molecular phylogeny and descriptions of nine new species. ''Zoological Journal of the Linnean Society''. 176: 485-510. *''Grania acanthochaeta'' Rota & Erséus, 1996 *''Grania algida'' Rota ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grindal Worm
''Enchytraeus buchholzi'', Grindal worms, (described by František Vejdovsky in 1879) are enchytraeid oligochaete worms. They are found in temperate meadows and disturbed roadside verges. The scientific name probably covers a group of morphologically indistinguishable species, which would complicate their use as test species in substitution for '' E. albidus'', a species commonly cultivated in the laboratory for toxicity tests, according to OECD.''OECD Guidelines for the Testing of Chemicals'' 220, adopted 13 April 2004 For aquarists "Grindal worms" are treated as smaller relatives of whiteworms, but usually only grow to about 10 mm and thus are an ideal size for most small freshwater fish, both adults and larger fry. Mrs. Morten Grindal, of Sweden, who was prominent in the development of culturing techniques for whiteworms, was apparently the first aquarist to isolate this smaller species. Grindal worms can be cultured exactly as whiteworms but are a much more adaptable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthworm
An earthworm is a terrestrial invertebrate that belongs to the phylum Annelida. They exhibit a tube-within-a-tube body plan; they are externally segmented with corresponding internal segmentation; and they usually have setae on all segments. They occur worldwide where soil, water, and temperature allow. Earthworms are commonly found in soil, eating a wide variety of organic matter. This organic matter includes plant matter, living protozoa, rotifers, nematodes, bacteria, fungi, and other microorganisms. An earthworm's digestive system runs the length of its body. An earthworm respires (breathes) through its skin. It has a double transport system made of coelomic fluid that moves within the fluid-filled coelom and a simple, closed circulatory system. It has a central and peripheral nervous system. Its central nervous system consists of two ganglia above the mouth, one on either side, connected to a nerve running along its length to motor neurons and sensory cells in each s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marionina
''Marionina'' is a genus of annelids belonging to the family Enchytraeidae. The genus has 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 ext .... Species: * '' Marionina aberrans'' Finogenova, 1973 * '' Marionina achaeta'' (Hagen, 1954) References {{Taxonbar, from=Q5149880 Annelids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enchytraeus
The genus ''Enchytraeus'' includes about 40 species of annelid worms. The term white worm is often used for all of the species in general, but specifically it is ''E. albidus'' which is named the white worm. This species is used as fish food by aquarium enthusiasts. ''E. buchholzi'' is known as the Grindal worm. It was named for the Swedish fish breeder that first raised the worm to feed her fish. Some species are terrestrial, some semi-aquatic, and others marine. Some can be found in brackish water or on beaches. Several of these species lack sex organs and reproduce by fragmenting, notably ''E. fragmentosus'', which gets its name from this characteristic. Species include: *''Enchytraeus albidus'' ("White worms") *'' Enchytraeus buchholzi'' ("Grindal worms") *'' Enchytraeus capitatus '' *''Enchytraeus citrinus'' *''Enchytraeus fragmentosus'' *''Enchytraeus japonensis'' *''Enchytraeus kincaidi'' *''Enchytraeus lacteus'' *''Enchytraeus liefdeensis'' *''Enchytraeus minutus'' *''En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumbricillus
''Lumbricillus'' is a genus of annelids belonging to the family Enchytraeidae. The genus has cosmopolitan distribution. Species: * ''Lumbricillus aestuum'' (Stephenson, 1932) * ''Lumbricillus alaricus ''Lumbricillus'' is a genus of annelids belonging to the family Enchytraeidae. The genus has cosmopolitan distribution. Species: * ''Lumbricillus aestuum ''Lumbricillus'' is a genus of annelids belonging to the family Enchytraeidae Ench ...'' Shurova, 1974 References {{Taxonbar, from=Q5169971 Annelids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henlea
''Henlea'' is a genus of annelids belonging to the family Enchytraeidae. The genus has almost cosmopolitan distribution. Species: * ''Henlea adiverticulata'' Christensen & Dózsa-Farkas, 1999 * ''Henlea africana ''Henlea'' is a genus of annelids belonging to the family Enchytraeidae. The genus has almost cosmopolitan distribution. Species: * ''Henlea adiverticulata'' Christensen & Dózsa-Farkas, 1999 * ''Henlea africana ''Henlea'' is a genus of anne ...'' Bell, 1954 References {{Taxonbar, from=Q15136708 Annelids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemifridericia
''Hemifridericia'' is a genus of annelids belonging to the family Enchytraeidae Enchytraeidae is a family of microdrile oligochaetes. They resemble small earthworms and include both terrestrial species known as potworms that live in highly organic terrestrial environments, as well as some that are marine. The peculiar genu .... The species of this genus are found in Eurasia and Northern America. Species: * '' Hemifridericia bivesiculata'' Christensen & Dózsa-Farkas, 2006 * '' Hemifridericia parva'' Nielsen & Christensen, 1959 References {{Taxonbar, from=Q18519456 Annelids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cernosvitoviella
''Cernosvitoviella'' is a genus of annelids belonging to the family Enchytraeidae. The genus was first described by Nielsen and Christensen in 1959. The species of this genus are found in Eurasia and Northern America. Species: * ''Cernosvitoviella crassoductus'' * ''Cernosvitoviella immota'' * ''Cernosvitoviella tatrensis ''Cernosvitoviella'' is a genus of annelids belonging to the family Enchytraeidae. The genus was first described by Nielsen and Christensen in 1959. The species of this genus are found in Eurasia and Northern America. Species: * ''Cernosvito ...'' References {{Taxonbar, from=Q5143861 Annelids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
