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Tetrameridae
Tetrameridae is a family (biology), family of spirurian nematodes. It is the smallest of the large genera making up the bulk of the Taxonomic rank, superfamily Habronematoidea. Like all nematodes, they have neither a circulatory system, circulatory nor a respiratory system. They are parasites, chiefly of birds and cetaceans. This family contains the largest known nematode: ''Placentonema gigantissima'' is several meters long and has been found in the placenta of the sperm whale (''Physeter catodon''). Systematics The Tetrameridae number about half a dozen genera only, but some are rather speciose; the type genus ''Tetrameres'' contains a lot of species even by nematode standards. While it might be lumpers and splitters, overlumped, as presently delimited about half of the more than 100 species of Tetrameridae are placed in it. Subfamily Crassicaudinae Yorke & Maplestone, 1926 * ''Crassicauda'' Robert Thomson Leiper, Leiper & Atkinson, 1914 * ''Placentonema'' Gubanov, 1951 Subfa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habronematoidea
Habronematoidea is a superfamily of spirurian nematodes in the large order Spirurida. Like all nematodes, they have neither a circulatory nor a respiratory system. Though none of the families placed here are overly diverse, they are quite large except for the monotypic Hedruridae. Consequently, the Habronematoidea are at present the second-largest superfamily of Spirurida, after the Filarioidea which contains the massively speciose Onchocercidae The Onchocercidae are a family of nematodes in the superfamily Filarioidea. This family includes some of the most devastating human parasitic diseases, such as lymphatic filariasis, onchocerciasis, loiasis, and other filariases. Represent .... The families of the Habronematoidea are: * Cystidicolidae * Habronematidae * Hedruridae * Tetrameridae References Spirurida Animal superfamilies {{Secernentea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetrameres
''Tetrameres'' is a genus of nematodes belonging to the family Tetrameridae Tetrameridae is a family (biology), family of spirurian nematodes. It is the smallest of the large genera making up the bulk of the Taxonomic rank, superfamily Habronematoidea. Like all nematodes, they have neither a circulatory system, circulato .... Species: *'' Tetrameres fissispina'' *'' Tetrameres salina'' *'' Tetrameres tarapungae'' References {{Authority control Nematodes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Von Drasche
The term ''von'' () is used in German language surnames either as a nobiliary particle indicating a noble patrilineality, or as a simple preposition used by commoners that means ''of'' or ''from''. Nobility directories like the ''Almanach de Gotha'' often abbreviate the noble term ''von'' to ''v.'' In medieval or early modern names, the ''von'' particle was at times added to commoners' names; thus, ''Hans von Duisburg'' meant "Hans from he city ofDuisburg". This meaning is preserved in Swiss toponymic surnames and in the Dutch or Afrikaans ''van'', which is a cognate of ''von'' but does not indicate nobility. Usage Germany and Austria The abolition of the monarchies in Germany and Austria in 1919 meant that neither state has a privileged nobility, and both have exclusively republican governments. In Germany, this means that legally ''von'' simply became an ordinary part of the surnames of the people who used it. There are no longer any legal privileges or constraints assoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Genus
In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal family-group taxon is a nominal genus called the 'type genus'; the family-group name is based upon that of the type genus." Any family-group name must have a type genus (and any genus-group name must have a type species, but any species-group name may, but need not, have one or more type specimens). The type genus for a family-group name is also the genus that provided the stem to which was added the ending -idae (for families). :Example: The family name Formicidae has as its type genus the genus ''Formica'' Linnaeus, 1758. Botanical nomenclature In botanical nomenclature, the phrase "type genus" is used, unofficially, as a term of convenience. In the '' ICN'' this phrase has no status. The code uses type specimens for ranks up to fam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alain Chabaud
Alain Chabaud (13 March 1923 – 11 March 2013) was a French parasitologist, mainly a specialist of nematodes and sporozoa. He was the Director of the Laboratoire de Zoologie (Vers) in the Muséum National d'Histoire Naturelle in Paris from 1960 to 1989. He was one of the founders of the Société Française de Parasitologie in 1962 and its president until 1975, and president of the Société zoologique de France in 1967. Taxa named in his honour Chabaud's name is honoured in many parasite taxa described by his colleagues. The most famous species named in the honour of Chabaud is ''Plasmodium chabaudi'' Landau, 1965, a species studied in many laboratories. Several genera of Nematoda were named in the honour of Chabaud, including '' Chabaudacuaria'' Mutafchiev & Kinsella, 2012, '' Chabaudechina'' Smales, 1999, '' Chabaudgolvania'' Freitas, 1958 (also honouring French parasitologist Jean-Yves Golvan). '' Chabaudus chabaudi'' Inglis & Ogden, 1965 has both genus and species names ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placentonema
''Placentonema gigantissima'' is a giant nematode that parasitizes the placenta of the sperm whale The sperm whale or cachalot (''Physeter macrocephalus'') is the largest of the toothed whales and the largest toothed predator. It is the only living member of the genus ''Physeter'' and one of three extant species in the sperm whale famil .... With a length of and a diameter of , it is potentially the largest nematode worm ever described. It was discovered in the 1950s around the Kuril Islands. The placentonema gigantissima develops its parasitic nature by utilizing nutrients found in the endometrium of female sperm whales and forming as spiriud (small, embroyonated) eggs. It can parasitize not only the placenta, but also the uterus, reproductive tract, mammary glands, or subdermis of the sperm whale. References Nematodes described in 1951 Spirurida Parasitic nematodes of mammals Whales {{Secernentea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Thomson Leiper
Robert Thomson Leiper (17 April 1881 – 21 May 1969) FRS CMG was a British parasitologist and helminthologist. Early life and education Leiper was born on 17 April 1881 in Witch Road, Kilmarnock, Scotland; the eldest of three children of John Leiper (died 1895), tailor, and his wife, Jessie Aird. The family moved to England shortly after he was born. He was educated at Warwick School, spending time at the Warwick Technical College to further his studies in science. He spent a year at Mason Science College (which later became the University of Birmingham), matriculating in physics, mathematics, English and Latin. He then entered the University of Glasgow to study medicine, at which he excelled, winning awards such as the John Hunter Medal and the Senior Arnott Prize in the field; graduating in 1904. Career From an early age Leiper was devoted to helminthology, the study of parasitic flatworms; while still an undergraduate, at the age of 21, he discovered an undocumented turbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
