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Bystřice (river)
Bystřice is a river in the Czech Republic, draining south from its source near Pecka through Miletín, Hořice, Mokrovousy, Nechanice, Boharyně, Kratonohy and merging with Cidlina at Chlumec nad Cidlinou. It is 62.7 km long, and its basin area is 379 km2. A survey conducted in 2010 showed that the Bystřice River was inhabited by a total of 21 species of aquatic molluscs, out of which 11 were gastropods and the remaining 10 were bivalves. Most of the recorded species were common ones. Although previous researches had shown the river to have an even higher number of species, the most notable find of the research in 2010 was the increase in the alien Potamopyrgus antipodarum and Physella acuta species. On the other hand, there was also the delightful discovery of the presence of the endangered bivalve Unio crassus ''Unio crassus'', the thick shelled river mussel, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hořice (Jičín District)
Hořice (, also known as Hořice v Podkrkonoší; german: Horschitz) is a town in Jičín District in the Hradec Králové Region of the Czech Republic. It has about 8,600 inhabitants. Administrative parts Villages of Březovice, Chlum, Chvalina, Doubrava, Libonice and Svatogothardská Lhota are administrative parts of Hořice. Geography Hořice is located about northwest of Hradec Králové. It lies on the border between the hilly landscape of the Jičín Uplands in the north, and the flat landscape of the Central Elbe Table in the south. The highest point is at above sea level. History The first written mention of Hořice is from 1143 in the foundation deed of the Strahov Monastery. It was founded on a hill later named Gothard, which was named after the Church of Saint Gotthard founded here in the 12th century. In the 13th century, the settlement was moved to strategically more advantageous place below the hill. In 1365, it was first documented as a market town. In 1423, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusca
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unio Crassus
''Unio crassus'', the thick shelled river mussel, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. MolluscaBase eds. (2023). MolluscaBase. Unio crassus Philipsson, 1788. Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=1044116 on 2023-01-09 ;Subspecies: * † ''Unio crassus jaeckeli'' Modell, 1950 * † ''Unio crassus klemmi'' Modell, 1957 Ecology As part of newly discovered reproductive behaviour, this mollusc crawls up to the edge of the water, exposing its excurrent aperture, and then lets loose a stream of water. The fountain of water often contains glochidia, and it is suggested that this spurting behavior may facilitate dispersal of mussel larvae (video). Decline The thick shelled river mussel declined during the 20th century everywhere in Europe due to deteriorating water quality, habitat fragmentation and host fish limitation. Distribution Its native di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B10162 Ústí Valašské Bystřice
B1, B.I, B.1 or B-1 may refer to: Biology and chemistry * Bradykinin receptor B1, a human protein * Cinnamtannin B1, a condensed tannin found in cinnamon * Combretastatin B-1, a stilbenoid found in ''Combretum sp.'' * Fumonisin B1, a toxins produced by several species of ''Fusarium'' molds * B-1 cell, a lymphocyte type * Arecatannin B1, a tannin found in the betel nut * Proanthocyanidin B1, a B type proanthocyanidin * Vitamin B1, also known as thiamine Media * B1 TV, a Romanian TV network * A class of FM radio broadcasting in North America Roads Vehicles * Rockwell B-1 Lancer, a United States Air Force strategic bomber * B1 (New York City bus) serving Brooklyn * B1 type submarine, a World War II Imperial Japanese Navy submarine class * Alsace-Lorraine B 1, an Alsace-Lorraine P 1 class steam locomotive * Marussia B1, a high-performance luxury sports coupé built by Russian automaker Marussia Motors * GS&WR Class B1, a Great Southern and Western Railway Irish st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bystřice River In Boharyně
Bystřice may refer to places in the Czech Republic: Inhabited places *Bystřice (Benešov District), a town in the Central Bohemian Region *Bystřice (Frýdek-Místek District), a municipality and village in the Moravian-Silesian Region * Bystřice (Jičín District), a municipality and village in the Hradec Králové Region *Bystřice, a village and part of Bělá nad Radbuzou in the Plzeň Region *Bystřice, a village and part of Dubí in the Ústí nad Labem Region *Bystřice, a village and part of Hroznětín in the Karlovy Vary Region *Bystřice, a village and part of Včelákov in the Pardubice Region *Bystřice nad Pernštejnem, a town in the Vysočina Region *Bystřice nad Úhlavou, a village and part of Nýrsko in the Plzeň Region *Bystřice pod Hostýnem, a town in the Zlín Region *Bystřice pod Lopeníkem, a municipality and village in the Zlín Region *Malá Bystřice, a municipality and village in the Zlín Region *Nová Bystřice, a town in the South Bohemian Region ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thick Shelled River Mussel
''Unio crassus'', the thick shelled river mussel, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. MolluscaBase eds. (2023). MolluscaBase. Unio crassus Philipsson, 1788. Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=1044116 on 2023-01-09 ;Subspecies: * † ''Unio crassus jaeckeli'' Modell, 1950 * † ''Unio crassus klemmi'' Modell, 1957 Ecology As part of newly discovered reproductive behaviour, this mollusc crawls up to the edge of the water, exposing its excurrent aperture, and then lets loose a stream of water. The fountain of water often contains glochidia, and it is suggested that this spurting behavior may facilitate dispersal of mussel larvae (video). Decline The thick shelled river mussel declined during the 20th century everywhere in Europe due to deteriorating water quality, habitat fragmentation and host fish limitation. Distribution Its native dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physella Acuta
''Physella acuta'' is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic gastropod mollusk in the family Physidae. Common names include European physa, tadpole snail, bladder snail, and acute bladder snail. In addition, ''Physa acuta'', ''Physa heterostropha'' (Say, 1817) and ''Physa integra'' (Haldeman, 1841) are synonyms of ''Physella acuta'' (Draparnaud, 1805). Etymology The etymology of the name ''Physella'' is obscure but could be ultimately from a Greek root. "Physella" (as a place name) is recorded in Giovanni Gemisto's printed edition of Pliny's encyclopedia, perhaps lifted from Ermolao Barbaro's ''Castigationes Plinianae'' where it is recorded as ''Physcella''. The French naturalist Jacques Draparnaud was the first to describe a species of the genus ''Physella'' and coined the name. Shell description Snails in the family Physidae have shells that are sinistral, which means that if the shell is held with the aperture facing the ob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand Mud Snail
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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalvia
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bivalves have no head and they lack some usual molluscan organs, like the radula and the odontophore. They include the clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. Some bivalves, such as the scallops and file shells, can swim. The shipworms bore into wood, clay, or stone and live inside these substances. The shell of a bivalve is composed o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropoda
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, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlumec Nad Cidlinou
Chlumec nad Cidlinou (; german: Chlumetz an der Zidlina) is a town in Hradec Králové District in the Hradec Králové Region of the Czech Republic. It has about 5,600 inhabitants. Administrative parts The town is made up of town parts of Chlumec nad Cidlinou I–IV and villages of Kladruby, Lučice and Pamětník. Etymology The town's name Chlumec is derived from the Old Czech word ''chlum'', which meant a hill covered with forest. Geography Chlumec nad Cidlinou is located about west of Hradec Králové. It lies in a flat landscape of the East Elbe Table. Teh highest point is at above sea level. The town is situated at the confluence of the rivers Cidlina and Bystřice. There are several ponds in the territory, especially north of the town. The largest of them is Chlumecký. The nearest neighbourhood is surrounded by gardens and after it the town is sometimes nicknamed ''Town in gardens''. History The first written mention of Chlumec is from 1235 in a deed of King Wencesla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cidlina
Cidlina () is a river in the Czech Republic, draining south from its source in Tábor hill near Lomnice nad Popelkou through Jičín, Nový Bydžov Nový Bydžov (; german: Neubidschow) is a town in Hradec Králové District in the Hradec Králové Region of the Czech Republic. It has about 7,000 inhabitants. The town centre is well preserved and is protected by law as an urban monument zo ... and Chlumec nad Cidlinou, merging with the Elbe at Libice nad Cidlinou. Cidlina is 87.3 kilometres long, its drainage area covers 1,164 km2 and average discharge is 4.66 m³/s. References Rivers of the Hradec Králové Region Rivers of the Central Bohemian Region Rivers of the Liberec Region {{CzechRepublic-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
