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Potamopyrgus
''Potamopyrgus'' is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae.Bouchet, P.; Rosenberg, G. (2014); Criscione and Ponder 2013. ''Potamopyrgus'' Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=147122 on 2014-07-29 Description Stimpson (1865) described the genus as follows: “Shell ovate-conic, imperforate; apex acute; whorls coronated with spines; outer whorl nearly two-thirds the length of the shell; aperture ovate, outer lip acute. Operculum corneous, subspiral. Foot rather short for the length of the shell, broadest in front and strongly auriculated. Tentacles very long, slender, and tapering. Eyes on very prominent tubercles. Rostrum of moderate size.” Distribution This genus is endemic to New Zealand and south eastern Australia. However, one species within this genus, ''P. antipodarum'', has been accidentally intr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Antipodarum
The New Zealand mud snail (''Potamopyrgus antipodarum'') is a species of very small freshwater snail with a gill and an operculum. This aquatic gastropod mollusk is in the family Tateidae. It is native to New Zealand, where it is found throughout the country, but it has been introduced to many other countries, where it is often considered an invasive species because populations of the snail can reach very high densities. Shell description The shell of ''Potamopyrgus antipodarum'' is elongated and has dextral coiling, with 7 to 8 whorls. Between whorls are deep grooves. Shell colors vary from gray and dark brown to light brown. The average height of the shell is approximately 5 mm (\begin \frac \end in); maximum size is approximately 12 mm (\begin \frac \end in). The snail is usually 4–6 mm in length in the Great Lakes, but grows to 12 mm in its native range. It is an operculate snail, with a 'lid' that can seal the opening of its shell. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Jenkinsi
The New Zealand mud snail (''Potamopyrgus antipodarum'') is a species of very small freshwater snail with a gill and an operculum. This aquatic gastropod mollusk is in the family Tateidae. It is native to New Zealand, where it is found throughout the country, but it has been introduced to many other countries, where it is often considered an invasive species because populations of the snail can reach very high densities. Shell description The shell of ''Potamopyrgus antipodarum'' is elongated and has dextral coiling, with 7 to 8 whorls. Between whorls are deep grooves. Shell colors vary from gray and dark brown to light brown. The average height of the shell is approximately 5 mm (\begin \frac \end in); maximum size is approximately 12 mm (\begin \frac \end in). The snail is usually 4–6 mm in length in the Great Lakes, but grows to 12 mm in its native range. It is an operculate snail, with a 'lid' that can seal the opening of its shel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Dawbini
''Potamopyrgus'' is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae.Bouchet, P.; Rosenberg, G. (2014); Criscione and Ponder 2013. ''Potamopyrgus'' Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=147122 on 2014-07-29 Description Stimpson (1865) described the genus as follows: “Shell ovate-conic, imperforate; apex acute; whorls coronated with spines; outer whorl nearly two-thirds the length of the shell; aperture ovate, outer lip acute. Operculum corneous, subspiral. Foot rather short for the length of the shell, broadest in front and strongly auriculated. Tentacles very long, slender, and tapering. Eyes on very prominent tubercles. Rostrum of moderate size.” Distribution This genus is endemic to New Zealand and south eastern Australia. However, one species within this genus, ''P. antipodarum'', has been accidentally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Melvilli
''Potamopyrgus'' is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae.Bouchet, P.; Rosenberg, G. (2014); Criscione and Ponder 2013. ''Potamopyrgus'' Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=147122 on 2014-07-29 Description Stimpson (1865) described the genus as follows: “Shell ovate-conic, imperforate; apex acute; whorls coronated with spines; outer whorl nearly two-thirds the length of the shell; aperture ovate, outer lip acute. Operculum corneous, subspiral. Foot rather short for the length of the shell, broadest in front and strongly auriculated. Tentacles very long, slender, and tapering. Eyes on very prominent tubercles. Rostrum of moderate size.” Distribution This genus is endemic to New Zealand and south eastern Australia. However, one species within this genus, ''P. antipodarum'', has been accidentally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Kaitunaparaoa
''Potamopyrgus'' is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae.Bouchet, P.; Rosenberg, G. (2014); Criscione and Ponder 2013. ''Potamopyrgus'' Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=147122 on 2014-07-29 Description Stimpson (1865) described the genus as follows: “Shell ovate-conic, imperforate; apex acute; whorls coronated with spines; outer whorl nearly two-thirds the length of the shell; aperture ovate, outer lip acute. Operculum corneous, subspiral. Foot rather short for the length of the shell, broadest in front and strongly auriculated. Tentacles very long, slender, and tapering. Eyes on very prominent tubercles. Rostrum of moderate size.” Distribution This genus is endemic to New Zealand and south eastern Australia. However, one species within this genus, ''P. antipodarum'', has been accidentally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Estuarinus
''Potamopyrgus'' is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae.Bouchet, P.; Rosenberg, G. (2014); Criscione and Ponder 2013. ''Potamopyrgus'' Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=147122 on 2014-07-29 Description Stimpson (1865) described the genus as follows: “Shell ovate-conic, imperforate; apex acute; whorls coronated with spines; outer whorl nearly two-thirds the length of the shell; aperture ovate, outer lip acute. Operculum corneous, subspiral. Foot rather short for the length of the shell, broadest in front and strongly auriculated. Tentacles very long, slender, and tapering. Eyes on very prominent tubercles. Rostrum of moderate size.” Distribution This genus is endemic to New Zealand and south eastern Australia. However, one species within this genus, ''P. antipodarum'', has been accidentally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Ciliatus
''Potamopyrgus'' is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae.Bouchet, P.; Rosenberg, G. (2014); Criscione and Ponder 2013. ''Potamopyrgus'' Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=147122 on 2014-07-29 Description Stimpson (1865) described the genus as follows: “Shell ovate-conic, imperforate; apex acute; whorls coronated with spines; outer whorl nearly two-thirds the length of the shell; aperture ovate, outer lip acute. Operculum corneous, subspiral. Foot rather short for the length of the shell, broadest in front and strongly auriculated. Tentacles very long, slender, and tapering. Eyes on very prominent tubercles. Rostrum of moderate size.” Distribution This genus is endemic to New Zealand and south eastern Australia. However, one species within this genus, ''P. antipodarum'', has been accidentally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Corolla
''Potamopyrgus'' is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae.Bouchet, P.; Rosenberg, G. (2014); Criscione and Ponder 2013. ''Potamopyrgus'' Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=147122 on 2014-07-29 Description Stimpson (1865) described the genus as follows: “Shell ovate-conic, imperforate; apex acute; whorls coronated with spines; outer whorl nearly two-thirds the length of the shell; aperture ovate, outer lip acute. Operculum corneous, subspiral. Foot rather short for the length of the shell, broadest in front and strongly auriculated. Tentacles very long, slender, and tapering. Eyes on very prominent tubercles. Rostrum of moderate size.” Distribution This genus is endemic to New Zealand and south eastern Australia. However, one species within this genus, ''P. antipodarum'', has been accidentally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Alexenkoae
''Potamopyrgus'' is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae.Bouchet, P.; Rosenberg, G. (2014); Criscione and Ponder 2013. ''Potamopyrgus'' Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=147122 on 2014-07-29 Description Stimpson (1865) described the genus as follows: “Shell ovate-conic, imperforate; apex acute; whorls coronated with spines; outer whorl nearly two-thirds the length of the shell; aperture ovate, outer lip acute. Operculum corneous, subspiral. Foot rather short for the length of the shell, broadest in front and strongly auriculated. Tentacles very long, slender, and tapering. Eyes on very prominent tubercles. Rostrum of moderate size.” Distribution This genus is endemic to New Zealand and south eastern Australia. However, one species within this genus, ''P. antipodarum'', has been accidentally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Oppidanus
''Potamopyrgus oppidanus'' is a species of freshwater gastropod mollusk in the family Tateidae. It is endemic to New Zealand where it is found only in one area in the town belt of Wellington. Taxonomy This species was first described by Martin Haase in 2008 using specimens collected in a stream in Wadestown in Wellington. The holotype specimen is held at the National Museum of New Zealand Te Papa Tongarewa. Description This species is approximately 3 mm in length and just over 1 mm in width. The shell is light brown in colour and semi transparent. The colour of the mantle can be patchy and there are two black stripes on the head of the snail. Distribution ''P. oppidanus'' is endemic to New Zealand and has only be found on Te Ahumairangi Hill in the town belt of Wellington. The species was first found in a fountain near Grant Road where it intersects with Wadestown Road. However the stream near the fountain was subsequently rerouted into a manmade stream bed an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Doci
''Potamopyrgus doci'' is a critically endangered species of fresh water snail native to New Zealand. Habitat This snail has been found in only one location in a spring at the exit of Ruakuri Cave, in the Waitomo Caves, north west of Te Kuiti. This habitat is only a few square metres in size but is within a protected area. However, there is recreational rafting in the cave and agriculture upstream may result in a decline in water quality. Despite this the population trend is regarded as being stable. Conservation Status In 2013 the Department of Conservation classified ''Potamopyrgus doci'' as Nationally Critical under the New Zealand Threat Classification System The New Zealand Threat Classification System is used by the Department of Conservation to assess conservation priorities of species in New Zealand. The system was developed because the IUCN Red List, a similar conservation status system, had some .... The species was judged as meeting the criteria for Nationally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamopyrgus Acus
''Potamopyrgus acus'' is a critically endangered species of fresh water snail native to New Zealand. Habitat This snail has been found in only one location in a gully, on a very small and steep limestone bank, at Limestone Downs Station in the Waikato. This snail was first discovered in 1981 but several surveys in 2002 and 2003 has failed to find any further specimens. The area has been cleared for agriculture and is under threat of damage by cattle. It is possible that this snail is extinct. Conservation Status In November 2018 the Department of Conservation classified ''Potamopyrgus acus'' as Nationally Critical under the New Zealand Threat Classification System The New Zealand Threat Classification System is used by the Department of Conservation to assess conservation priorities of species in New Zealand. The system was developed because the IUCN Red List, a similar conservation status system, had some .... The species was judged as meeting the criteria for Nationally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
