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Archiacanthocephala
Archiacanthocephala is a class within the phylum of Acanthocephala Acanthocephala (Greek , ', thorn + , ', head) is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to p .... They are Parasitic worm, parasitic worms that attach themselves to the intestinal wall of terrestrial vertebrates, including humans. They are characterised by the body wall and the lemnisci (which are a bundle of sensory nerve fibers), which have nuclei that divide without spindle formation, or the appearance of chromosomes, or it has a few amoebae-like giant nuclei. Typically, there are eight separate cement glands in the male, which is one of the few ways to distinguish the dorsal and ventral sides of these organisms. Taxonomy Genetic data are not available for the genus ''Apororhynchus'' in public databases, and ''Apororhynchus'' has not been included in Phyloge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archiacanthocephala
Archiacanthocephala is a class within the phylum of Acanthocephala Acanthocephala (Greek , ', thorn + , ', head) is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to p .... They are Parasitic worm, parasitic worms that attach themselves to the intestinal wall of terrestrial vertebrates, including humans. They are characterised by the body wall and the lemnisci (which are a bundle of sensory nerve fibers), which have nuclei that divide without spindle formation, or the appearance of chromosomes, or it has a few amoebae-like giant nuclei. Typically, there are eight separate cement glands in the male, which is one of the few ways to distinguish the dorsal and ventral sides of these organisms. Taxonomy Genetic data are not available for the genus ''Apororhynchus'' in public databases, and ''Apororhynchus'' has not been included in Phyloge ... [...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] |
Moniliformida
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 can cau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligacanthorhynchida
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] |
Oligacanthorhynchidae
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] |
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] |
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] |
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] |
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. *'' Intraprobo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apororhynchida
''Apororhynchus'' is a genus of small parasitic spiny-headed (or thorny-headed) worms. It is the only genus in the family Apororhynchidae, which in turn is the only member of the order Apororhynchida. A lack of features commonly found in the phylum Acanthocephala (primarily musculature) suggests an evolutionary branching from the other three orders of class Archiacanthocephala; however no genetic analysis has been completed to determine the evolutionary relationship between species. The distinguishing features of this order among archiacanthocephalans is a highly enlarged proboscis which contain small hooks. The musculature around the proboscis (the proboscis receptacle and receptacle protrusor) is also structured differently in this order. This genus contains six species that are distributed globally, being collected sporadically in Hawaii, Europe, North America, South America, and Asia. These worms exclusively parasitize birds by attaching themselves around the cloaca using thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apororhynchus
''Apororhynchus'' is a genus of small parasitic spiny-headed (or thorny-headed) worms. It is the only genus in the family Apororhynchidae, which in turn is the only member of the order Apororhynchida. A lack of features commonly found in the phylum Acanthocephala (primarily musculature) suggests an evolutionary branching from the other three orders of class Archiacanthocephala; however no genetic analysis has been completed to determine the evolutionary relationship between species. The distinguishing features of this order among archiacanthocephalans is a highly enlarged proboscis which contain small hooks. The musculature around the proboscis (the proboscis receptacle and receptacle protrusor) is also structured differently in this order. This genus contains six species that are distributed globally, being collected sporadically in Hawaii, Europe, North America, South America, and Asia. These worms exclusively parasitize birds by attaching themselves around the cloaca using thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
