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Gadimyxa
''Gadimyxa'' is a genus of myxozoans. Species The World Register of Marine Species includes the following species in the genus: * '' Gadimyxa arctica'' Køie, Karlsbakk & Nylund, 2007 * '' Gadimyxa atlantica'' Køie, Karlsbakk & Nylund, 2007 * '' Gadimyxa sphaerica'' Køie, Karlsbakk & Nylund, 2007 References Parvicapsulidae Cnidarian genera {{parasitic animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gadimyxa Sphaerica
''Gadimyxa sphaerica'' is a species of parasitic myxozoan. Together with '' G. arctica'' and '' G. atlantica'', they infect ''Gadus morhua'' and ''Arctogadus glacialis'' by developing coelozoically in bisporic plasmodia in their urinary systems. These 3 species' spores exhibit two morphological forms: wide and subspherical, being both types bilaterally symmetrical along the suture line. The wide spores have a mean width ranging from 7.5-10μm, respectively, while the subspherical ones range from 5.3-8μm in mean width. The subspherical forms of ''Gadimyxa'' are similar to '' Ortholinea'', differing in the development of the spores and in the arrangement of the polar capsule Polar capsules are structures found in the valves of Myxosporean parasites, which contain the polar filament. The polar capsule is constructed of a proteinaceous and a polysaccharide layer, both layers of which continue into the polar filament. T ...s. References Further reading *Karlsbakk, Egil, and Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gadimyxa Arctica
''Gadimyxa arctica'' is a species of parasitic myxozoan. Together with '' G. atlantica'' and '' G. sphaerica'', they infect ''Gadus morhua'' and ''Arctogadus glacialis'' by developing coelozoically in bisporic plasmodia in their urinary systems. These 3 species' spores exhibit two morphological forms: wide and subspherical, being both types bilaterally symmetrical along the suture line. The wide spores have a mean width ranging from 7.5-10μm, respectively, while the subspherical ones range from 5.3-8μm in mean width. The subspherical forms of ''Gadimyxa'' are similar to '' Ortholinea'', differing in the development of the spores and in the arrangement of the polar capsule Polar capsules are structures found in the valves of Myxosporean parasites, which contain the polar filament. The polar capsule is constructed of a proteinaceous and a polysaccharide layer, both layers of which continue into the polar filament. T ...s. References Further reading *Køie, Marianne, et al. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gadimyxa Atlantica
''Gadimyxa atlantica'' is a species of parasitic myxozoan. Together with '' G. arctica'' and '' G. sphaerica'', they infect ''Gadus morhua'' and ''Arctogadus glacialis'' by developing coelozoically in bisporic plasmodia in their urinary systems. These 3 species' spores exhibit two morphological forms: wide and subspherical, being both types bilaterally symmetrical along the suture line. The wide spores have a mean width ranging from 7.5-10μm, respectively, while the subspherical ones range from 5.3-8μm in mean width. The subspherical forms of ''Gadimyxa'' are similar to '' Ortholinea'', differing in the development of the spores and in the arrangement of the polar capsules. Polychaetes ''Spirorbis''species act as invertebrate hosts A host is a person responsible for guests at an event or for providing hospitality during it. Host may also refer to: Places *Host, Pennsylvania, a village in Berks County People * Jim Host (born 1937), American businessman * Michel Host ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myxozoa
Myxozoa (etymology: Greek: μύξα ''myxa'' "slime" or "mucus" + thematic vowel o + ζῷον ''zoon'' "animal") is a subphylum of aquatic cnidarian animals – all obligate parasites. It contains the smallest animals ever known to have lived. Over 2,180 species have been described and some estimates have suggested at least 30,000 undiscovered species. Many have a two-host lifecycle, involving a fish and an annelid worm or a bryozoan. The average size of a myxosporean spore usually ranges from 10 μm to 20 μm, whereas that of a malacosporean (a subclade of the Myxozoa) spore can be up to 2 mm. Myxozoans can live in both freshwater and marine habitats. Myxozoans are highly derived cnidarians that have undergone dramatic evolution from a free swimming, self-sufficient jellyfish-like creature into their current form of obligate parasites composed of very few cells – sometimes only a single cell. As myxozoans evolved into microscopic parasites, they lost many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parvicapsulidae
Parvicapsulidae is a family of myxosporeans. Genera * '' Gadimyxa'' Køie, Karlsbakk & Nylund, 2007 * '' Neoparvicapsula'' Gayevskaya, Kovaljova & Schulman, 1982 * '' Parvicapsula'' Shulman, 1953 References Cnidarian families Animal parasites of fish Variisporina {{parasitic animal-stub ... [...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 c ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
