Pomacea Commissionis
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Pomacea Commissionis
''Pomacea comissionis'' is a species of freshwater snail in the family Ampullariidae. It was first described by Hermann von Ihering in 1898 as a variety (i.e., subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...) of '' Ampullaria decussata''. References commissionis Gastropods described in 1898 Taxa named by Hermann von Ihering Freshwater snails {{Ampullariidae-stub ...
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Freshwater Snail
Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers. The great majority of freshwater gastropods have a shell, with very few exceptions. Some groups of snails that live in freshwater respire using gills, whereas other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung (e.g. ''Ampullariidae''). Most feed on algae, but many are detritivores and some are filter feeders. According to a 2008 review of the taxonomy, there are about 4,000 species of freshwater gastropods (3,795–3,972). At least 33–38 independent lineages of gastropods have successfully colonized freshwater environments. It is not possible to quantify the exact number of these lineages yet, because they have yet to be clarified within the Cerit ...
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Ampullariidae
Ampullariidae, commonly known as the apple snails, is a family of large freshwater snails, aquatic gastropod mollusks with a gill and an operculum. These snails simultaneously have a gill and a lung as functional respiratory structures, which are separated by a division of the mantle cavity. This adaptation allows these animals to be amphibious. Species in this family are considered gonochoristic, meaning that each individual organism is either male or female. Systematics and taxonomy Ampullariidae belongs to the superfamily Ampullarioidea, and is also its type family. It comprised two subfamilies according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005, which followed the classification proposed by Berthold (1991), including Ampullariinae Gray, 1824, and Afropominae Berthold, 1991. The current classification accepted by WoRMS includes Ampullariinae and Pomaceinae Starobogatov, 1983. Genera Ampullariidae are probably of Gondwanan origin, and the divers ...
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Hermann Von Ihering
Hermann Friedrich Albert von Ihering (9 October 1850 – 24 February 1930) was a German-Brazilian zoologist. He was the oldest son of Rudolf von Jhering. Biography Hermann Friedrich Albert von Ihering was born in 1850 in Kiel, Germany, the oldest son of Rudolf von Jhering. Under the advice of Rudolf Leuckart, Ihering studied medicine at the Giessen, Leipzig, Berlin, and Göttingen universities, working as an assistant at the zoological institute in Göttingen. He concluded his doctoral thesis in Göttingen, with the title ''Ueber das Wesen der Prognathie und ihr Verlhaeltniss zur Schaedelbasis'' (On the essence of prognathism and its effect on the base of the skull). He later worked as a Privatdozent for zoology at the Erlangen and Leipzig. On 26 April 1880, Ihering married a widow, Anna Maria Clara Wolff (born von Bezel), who had a 10-year-old boy, Sebastian Wolff, from her first marriage. The marriage was not approved by Ihering's family and, as a result, he travelled to Bra ...
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Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ...
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Ampullaria Decussata
''Pomacea decussata'' is a species of freshwater snail in the family Ampullariidae. It was first described by Stéfano Moricand as ''Ampullaria decussata'' in 1836. ''Pomacea commissionis'' was originally considered a subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ... of ''P. decussata''. References * Simone, L. R. L. (2006). Land and Freshwater Molluscs of Brazil. Editora Grafíca Bernardi, FAPESP. São Paulo, 390 pp. External links Cowie, R. H. & Thiengo, S. C. (2003). The apple snails of the Americas (Mollusca: Gastropoda: Ampullariidae: Asolene, Felipponea, Marisa, Pomacea, Pomella): A nomenclatural and type catalog. Malacologia. 45(1): 41-100 decussata Freshwater snails Taxa named by Moïse Étienne Moricand Gastropods described in 1836 {{Ampulla ...
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Pomacea
''Pomacea'' is a genus of freshwater snails with gills and an operculum, aquatic gastropod mollusks in the family Ampullariidae, the apple snails. The genus is native to the Americas; most species in this genus are restricted to South America. in the aquarium trade these snails are sometimes called ''Pomacea'' or incorrectly ''Ampullarius'', and in English as "olormystery snail" or "apple snail". Some species have been introduced outside their native range and are considered invasive because of their voracious appetite for plants. Because of this, imports involving this genus are restricted in some regions (including the United States) and are entirely banned in others (including the EU).Dawes, J. (14 January 2013). International Waters: EU Finally Bans Apple Snail Imports.'' Retrieved 4 June 2014 Species Species in the genus ''Pomacea'' include: subgenus ''Effusa'' Jousseaume, 1889 * ''Pomacea baeri'' (Dautzenberg, 1902) * ''Pomacea glauca'' (Linné, 1758) * ''Pomacea q ...
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Gastropods Described In 1898
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and reproduct ...
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Taxa Named By Hermann Von Ihering
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intr ...
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