Bithynia troschelii
Encyclopedia
Bithynia troschelii is species
of small freshwater snail
, an aquatic
prosobranch gastropod mollusk in the family Bithyniidae
.
Its specific epithet is in honor of German zoologist Franz Hermann Troschel
.
, and then it is known as Bithynia leachii troschelii.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of small freshwater snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
, an aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
prosobranch gastropod mollusk in the family Bithyniidae
Bithyniidae
Bithyniidae is a family of small freshwater snails with an operculum, aquatic gastropod molluscs in the clade Littorinimorpha.Their minute shell is often colored. They are characterized by a calcareous operculum, a lobe on the upper surface of the neck. The ctenidium, the respiratory gill-comb, is...
.
Its specific epithet is in honor of German zoologist Franz Hermann Troschel
Franz Hermann Troschel
Franz Hermann Troschel was a German zoologist who was born in Spandau. He studied mathematics and natural history at the University of Berlin, and beginning in 1840 was an assistant to Martin Lichtenstein at the Humboldt Museum of Natural History in Berlin...
.
Taxonomy
This is sometimes considered to be an eastern subspecies of Bithynia leachiiBithynia leachii
Bithynia leachii is species of small freshwater snail with an operculum, an aquatic prosobranch gastropod mollusk in the family Bithyniidae.-Shell description:The shell of the species grows to be 6.5 mm in maximum dimension....
, and then it is known as Bithynia leachii troschelii.
Distribution
- Czech Republic - It was thought to be locally extinct in Moravia. Regionally extinct in the Czech Republic (RE). There were rediscovered populations in southern Moravia near LedniceLedniceLednice is a village in South Moravia in the Czech Republic. In 1996 it was inscribed on the UNESCO World Heritage List as "an exceptional example of the designed landscape that evolved in the Enlightenment and afterwards under the care of a single family." It contains a palace and the largest...
and from Nesyt pond in 2008. - Germany - Recorded in BerlinBerlinBerlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...
, BrandenburgBrandenburgBrandenburg is one of the sixteen federal-states of Germany. It lies in the east of the country and is one of the new federal states that were re-created in 1990 upon the reunification of the former West Germany and East Germany. The capital is Potsdam...
, HamburgHamburg-History:The first historic name for the city was, according to Claudius Ptolemy's reports, Treva.But the city takes its modern name, Hamburg, from the first permanent building on the site, a castle whose construction was ordered by the Emperor Charlemagne in AD 808...
, Mecklenburg-Vorpommern, Lower SaxonyLower SaxonyLower Saxony is a German state situated in north-western Germany and is second in area and fourth in population among the sixteen states of Germany...
and ThuringiaThuringiaThe Free State of Thuringia is a state of Germany, located in the central part of the country.It has an area of and 2.29 million inhabitants, making it the sixth smallest by area and the fifth smallest by population of Germany's sixteen states....
. It is considered as high endangered (Stark gefährdet) in Mecklenburg-Vorpommern and in Lower Saxony. - Hungary - see Glöer & Fehér (2004)
- ...
Further reading
- Glöer P. & Fehér Z. 2004. Bithynia leachii (Sheppard, 1823) and Bithynia troschelii (Paasch, 1842) in Hungary (Prosobranchia: Bithyniidae). Annales historico-naturales Musei nationalis hungarici, 96: 285–297.
- Falniowski A., Glöer P. & Szarowska M. (2004) Bithynia troschelii (Paach, 1842), a giant of unknown origin? - Folia Malacologica 12(3): 137–139.