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Gigantorhynchus Echinodiscus
''Gigantorhynchus'' is a genus of Acanthocephala (thorny-headed worms, also known as spiny-headed worms) that parasitize marsupials, anteaters, and possibly baboons by attaching themselves to the intestines using their hook-covered proboscis. Their life cycle includes an egg stage found in host feces, a cystacanth (larval) stage in an intermediate host such as termites, and an adult stage where cystacanths mature in the intestines of the host. This genus is characterized by a cylindrical proboscis with a crown of robust hooks at the apex followed by numerous small hooks on the rest of the proboscis, a long body with pseudosegmentation, filiform lemnisci, and ellipsoid testes. The largest known specimen is the female ''G. ortizi'' with a length of around and a width of . Genetic analysis on one species of ''Gigantorhynchus'' places it with the related genus ''Mediorhynchus'' in the family Gigantorhynchidae. Six species in this genus are distributed across Central and South Amer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus '' Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mediorhynchus
''Mediorhynchus'' is a genus of small parasitic spiny-headed (or thorny-headed) worms. Phylogenetic analysis has been conducted on two known species of ''Mediorhynchus'' and confirmed the placement along with the related genus Gigantorhynchus in the family Gigantorhynchida. The distinguishing features of this order among archiacanthocephalans is a divided proboscis (specifically, the presence of a "teloboscis" which is the posterior third of a proboscis). This genus contains fifty-eight species that are distributed globally. These worms exclusively parasitize birds by attaching themselves around the cloaca using their hook-covered proboscis. The bird hosts are of different orders. Taxonomy and description ''Mediorhynchus'' is monophyletic based on phylogenetic analysis. Species can be identified primarily morphologically by the arrangement of hooks of the proboscis. The presence of a divided proboscis (specifically, the presence of a "teloboscis" which is the posterior third o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cement Glands
Cement glands are small organs found in Acanthocephala that are used to temporarily close the posterior end of the female after copulation. Cement glands are also mucus-secreting organs that can attach embryos or larvae to a solid substrate. These can be found in frogs such as those in the genus Xenopus, fish such as the Mexican tetra The Mexican tetra (''Astyanax mexicanus''), also known as the blind cave fish, blind cave characin, and blind cave tetra, is a freshwater fish of the family Characidae of the order Characiformes. The type species of its genus, it is native to th ..., and crustaceans. References Animal anatomy Parasites {{Animal-anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kolkata
Kolkata (, or , ; also known as Calcutta , the official name until 2001) is the capital of the Indian state of West Bengal, on the eastern bank of the Hooghly River west of the border with Bangladesh. It is the primary business, commercial, and financial hub of Eastern India and the main port of communication for North-East India. According to the 2011 Indian census, Kolkata is the seventh-most populous city in India, with a population of 45 lakh (4.5 million) residents within the city limits, and a population of over 1.41 crore (14.1 million) residents in the Kolkata Metropolitan Area. It is the third-most populous metropolitan area in India. In 2021, the Kolkata metropolitan area crossed 1.5 crore (15 million) registered voters. The Port of Kolkata is India's oldest operating port and its sole major riverine port. Kolkata is regarded as the cultural capital of India. Kolkata is the second largest Bengali-speaking city after Dhaka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apex
The apex is the highest point of something. The word may also refer to: Arts and media Fictional entities * Apex (comics), a teenaged super villainess in the Marvel Universe * Ape-X, a super-intelligent ape in the Squadron Supreme universe *Apex, a genetically-engineered human population in the TV series The Crossing (TV series), ''The Crossing'' Music * Apex (album), ''Apex'' (album), by Canadian heavy metal band Unleash the Archers * Apex (band), a Polish heavy metal band * Apex (musician) (1981–2017), British drum and bass music producer and DJ * The Apex Theory, the former name of the alternative rock band Mt. Helium *Lord Apex, a rapper from West London, UK Video games * Apex (tournament), a fighting game tournament focusing on ''Super Smash Bros.'' * APEX (video game), ''APEX'' (video game), a 2003 video game for the Xbox * Overwatch Apex, a South Korean ''Overwatch'' tournament series * ''Apex Legends'', a 2019 video game developed by Respawn Entertainment and published ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gigantorhynchida
Gigantorhynchida is an order containing a single family, Gigantorhynchidae of parasitic worms that attach themselves to the intestinal wall of terrestrial vertebrates. Gigantorhynchida contains the following three genera: *'' Gigantorhynchus'' Hamann, 1892 :The genus ''Gigantorhynchus'' is characterized by the presence of a cylindrical proboscis with a crown of robust hooks at the apex followed by numerous small hooks on the rest of the proboscis. The body, or trunk, is long with pseudosegmentation, the lemnisci are filiform, and the testes are ellipsoid. Species of ''Gigantorhynchus'' are distinguished based on the number and size of hooks on the crown of the proboscis, the type of pseudosegmentation, and size of the ellipsoid eggs. Males of all species possess eight cement glands which are used to temporarily close the posterior end of the female after copulation. There is pronounced sexual dimorphism with the female often two or more times longer than the male. *'' Intrapro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moniliformidae
Moniliformidae is a family of parasitic spiny-headed (or thorny-headed) worms. It is the only family in the Moniliformida order and contains three genera: ''Australiformis'' containing a single species, ''Moniliformis'' containing eighteen species and ''Promoniliformis'' containing a single species. Genetic analysis have determined that the clade is monophyletic despite being distributed globally. These worms primarily parasitize mammals, including humans in the case of ''Moniliformis moniliformis'', and occasionally birds by attaching themselves into the intestinal wall using their hook-covered proboscis. The intermediate hosts are mostly cockroaches. The distinguishing features of this order among archiacanthocephalans is the presence of a cylindrical proboscis with long rows of hooks with posteriorly directed roots and proboscis retractor muscles that pierce both the posterior and ventral end or just posterior end of the receptacle. Infestation with Monoliformida species ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moniliformis Moniliformis
''Moniliformis moniliformis'' is a parasite of the Acanthocephala phylum in the family Moniliformidae. The adult worms are usually found in intestines of rodents or carnivores such as cats and dogs. The species can also infest humans, though this is rare. Distribution Infested rats have been found world-wide. Cases of human infestation by ''Moniliformis moniliformis'' have been reported in the United States, Iran, Iraq, and Nigeria.]" target="_blank" class="mw-redirect" title=""> "Acanthocephalan Worms." Gideon. Gideon Informatics. Web. Morphology Acanthocephalans do not have s and absorb nutrients through the[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephridiacanthus Major
Oligacanthorhynchida is an order containing a single parasitic worm family, Oligacanthorhynchidae, that attach themselves to the intestinal wall of terrestrial vertebrates. Taxonomy and description Species ''Oligacanthorhynchida'' contains twelve genera and numerous species. Cucullanorhynchus The genus ''Cucullanorhynchus'' Amin, Ha and Heckmann, 2008 is named for the anterior hood. It was described in 2008 based on samples collected from the intestines of mammals between 1998 and 2004 in Vietnam. *''Cucullanorhynchus constrictruncatus'' Amin, Ha and Heckmann, 2008 ''C. constrictruncatus'' is the only species in the genus ''Cucullanorhynchus''. It has been found in the intestine of the leopard (''Panthera pardus'') in Vietnam. The trunk has an anterior hood in both sexes and a posterior constriction in females. The species name derives from this constriction near the posterior end of females. Heptamegacanthus The genus ''Heptamegacanthus'' Spencer-Jones, 1990 contains 1 sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligacanthorhynchus Tortuosa
Oligacanthorhynchida is an order containing a single parasitic worm family, Oligacanthorhynchidae, that attach themselves to the intestinal wall of terrestrial vertebrates. Taxonomy and description Species ''Oligacanthorhynchida'' contains twelve genera and numerous species. Cucullanorhynchus The genus ''Cucullanorhynchus'' Amin, Ha and Heckmann, 2008 is named for the anterior hood. It was described in 2008 based on samples collected from the intestines of mammals between 1998 and 2004 in Vietnam. *''Cucullanorhynchus constrictruncatus'' Amin, Ha and Heckmann, 2008 ''C. constrictruncatus'' is the only species in the genus ''Cucullanorhynchus''. It has been found in the intestine of the leopard (''Panthera pardus'') in Vietnam. The trunk has an anterior hood in both sexes and a posterior constriction in females. The species name derives from this constriction near the posterior end of females. Heptamegacanthus The genus ''Heptamegacanthus'' Spencer-Jones, 1990 contains 1 sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oncicola Venezuelensis
Oligacanthorhynchida is an order containing a single parasitic worm family, Oligacanthorhynchidae, that attach themselves to the intestinal wall of terrestrial vertebrates. Taxonomy and description Species ''Oligacanthorhynchida'' contains twelve genera and numerous species. Cucullanorhynchus The genus ''Cucullanorhynchus'' Amin, Ha and Heckmann, 2008 is named for the anterior hood. It was described in 2008 based on samples collected from the intestines of mammals between 1998 and 2004 in Vietnam. *''Cucullanorhynchus constrictruncatus'' Amin, Ha and Heckmann, 2008 ''C. constrictruncatus'' is the only species in the genus ''Cucullanorhynchus''. It has been found in the intestine of the leopard (''Panthera pardus'') in Vietnam. The trunk has an anterior hood in both sexes and a posterior constriction in females. The species name derives from this constriction near the posterior end of females. Heptamegacanthus The genus ''Heptamegacanthus'' Spencer-Jones, 1990 contains 1 sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macracanthorhynchus Ingens
Oligacanthorhynchida is an order containing a single parasitic worm family, Oligacanthorhynchidae, that attach themselves to the intestinal wall of terrestrial vertebrates. Taxonomy and description Species ''Oligacanthorhynchida'' contains twelve genera and numerous species. Cucullanorhynchus The genus ''Cucullanorhynchus'' Amin, Ha and Heckmann, 2008 is named for the anterior hood. It was described in 2008 based on samples collected from the intestines of mammals between 1998 and 2004 in Vietnam. *''Cucullanorhynchus constrictruncatus'' Amin, Ha and Heckmann, 2008 ''C. constrictruncatus'' is the only species in the genus ''Cucullanorhynchus''. It has been found in the intestine of the leopard (''Panthera pardus'') in Vietnam. The trunk has an anterior hood in both sexes and a posterior constriction in females. The species name derives from this constriction near the posterior end of females. Heptamegacanthus The genus ''Heptamegacanthus'' Spencer-Jones, 1990 contains 1 sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
