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Stone Moroko
The stone moroko (''Pseudorasbora parva''), also known as the topmouth gudgeon, is a species of freshwater Actinopterygii, ray-finned fish belonging to the Family (biology), family Gobionidae, the gudgeons. This species is native to Asia, but introduced and now considered an invasive species in Europe and North America. The fish's size is rarely above 8 cm and usually long. Invasive species In Europe, ''P. parva'' is included since 2016 in the list of Invasive Alien Species of Union concern (the Union list). This implies that this species cannot be imported, bred, transported, commercialized, or intentionally released into the environment in the whole of the European Union. The fish was introduced in the 1960s into ponds in Nucet, Dâmbovița County, Romania and it made its way into Danube, then spreading throughout Europe. These fish feed on eggs of locally valuable native fish species. Four phylogenetic lineages of ''Pesudorasbora parva'' were identified within its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coenraad Jacob Temminck
Coenraad Jacob Temminck (; 31 March 1778 – 30 January 1858) was a Dutch people, Dutch patrician, Zoology, zoologist and museum director. Biography Coenraad Jacob Temminck was born on 31 March 1778 in Amsterdam in the Dutch Republic. From his father, Jacob Temminck, who was treasurer of the Dutch East India Company with links to numerous travellers and collectors, he inherited a large collection of bird specimens. His father was a good friend of Francois Levaillant who also guided Coenraad. Temminck's ''Manuel d'ornithologie, ou Tableau systématique des oiseaux qui se trouvent en Europe'' (1815) was the standard work on European birds for many years. He was also the author of ''Histoire naturelle générale des Pigeons et des Gallinacées'' (1813–1817), illustrated by Pauline Rifer de Courcelles, Pauline Knip. He wrote ''Nouveau Recueil de Planches coloriées d'Oiseaux'' (1820–1839), and contributed to the mammalian sections of Philipp Franz von Siebold's ''Fauna jap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danube
The Danube ( ; see also #Names and etymology, other names) is the List of rivers of Europe#Longest rivers, second-longest river in Europe, after the Volga in Russia. It flows through Central and Southeastern Europe, from the Black Forest south into the Black Sea. A large and historically important river, it was once a frontier of the Roman Empire. In the 21st century, it connects ten European countries, running through their territories or marking a border. Originating in Germany, the Danube flows southeast for , passing through or bordering Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine. Among the many List of cities and towns on the river Danube, cities on the river are four national capitals: Vienna, Bratislava, Budapest, and Belgrade. Its drainage basin amounts to and extends into nine more countries. The Danube's longest headstream, the Breg (river), Breg, rises in Furtwangen im Schwarzwald, while the river carries its name from its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Coenraad Jacob Temminck
In biology, a taxon (back-formation from ''taxonomy''; : 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, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). 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 presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudorasbora
''Pseudorasbora'' is a genus of freshwater ray-finned fish belonging to the family Gobionidae, the gudgeons. These fishes are native to eastern Asia, including China, Korea, Japan and Siberia Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states .... ''P. parva'', has been introduced to regions outside its native range and is considered invasive. Species There are currently 5 recognized species in this genus: * '' Pseudorasbora elongata'' H. W. Wu, 1939 * '' Pseudorasbora interrupta'' Z. Xiao, Z. H. Lan & X. L. Chen, 2007 * '' Pseudorasbora parva'' Temminck & Schlegel, 1846 (Stone moroko, topmouth gudgeon) * '' Pseudorasbora pugnax'' Kawase & Hosoya, 2015 * '' Pseudorasbora pumila'' Miyadi, 1930 () References Gobionidae Taxa named by Pieter Bleeker {{Gobioninae- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyrodactylus
''Gyrodactylus'' is a genus of parasitic flatworms in the family Gyrodactylidae. Species Species listed in the World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...: Other species: * '' Gyrodactylus benedeni'' * '' Gyrodactylus bios'' * '' Gyrodactylus dorlodoti'' * '' Gyrodactylus elegans'' von Nordmann, 1832 * '' Gyrodactylus mediotorus'' King, Marcogliese, Forest, McLaughlin & Bentzen, 2013 * '' Gyrodactylus turnbulli'' References Monogenea genera {{Monogenea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dactylogyrus
''Dactylogyrus'' is a genus of monogeneans in the Dactylogyridae family. Like other monogeneans, species of ''Dactylogyrus'' only have one host required to complete their life cycle. Introduction Members of ''Dactylogyrus'' (common name: Gill Fluke) are oviparous (egg-laying) monogeneans trematodes that have two pairs of anchors. These anchors can be used to latch onto the gills of a host, particularly freshwater fish such as carp. In heavily infected fish, ''Dactylogyrus'' can also be found on the buccal cavity, and at times fins and skin of the freshwater fish. Species ''Dactylogyrus'' is one of the most speciose genus of helminths, with more than 900 species described, such as '' Dactylogyrus vastator''. Consequently, in 1996, it was estimated that the taxonomy was "in a state of considerable confusion". Anatomy Other characteristics of ''Dactylogyrus'' species include the appearance of four eye-spots, 14 marginal hooks (7 pairs), one to two connective bars and two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monogenea
Monogeneans, members of the class Monogenea, are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they have both male and female reproductive structures.L.A. Tubbsa et al. (2005). "Effects of temperature on fecundity in vitro, egg hatching and reproductive development of ''Benedenia seriolae'' and ''Zeuxapta seriolae'' (Monogenea) parasitic on yellowtail kingfish Seriola lalandi". ''International Journal for Parasitology''(35), 315–327. Some monogeneans are oviparous (egg-laying) and some are viviparous (live-bearing). Oviparous varieties release eggs into the water. Viviparous varieties release larvae, which immediately attach to another host. The genus ''Gyrodactylus'' is an example of a viviparous variety, while the genus ''Dactylogyrus'' is an example of an oviparous variety. Signs and symptoms Freshwater fish that become infect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaerothecum Destruens
''Sphaerothecum destruens'' (the rosette agent) is a parasite of fish. It was first discovered in the United States in association with invasive species including topmouth gudgeon, but was found to be the causative agent of a disease in the UK affecting salmonid species such as Atlantic salmon and brown trout. It is thought to pose more of a risk in Europe than in the US, as native species there are more susceptible to the parasite. The disease causes high rates of morbidity and mortality in a number of different salmonid species and can also infect other UK freshwater fish such as bream, carp The term carp (: carp) is a generic common name for numerous species of freshwater fish from the family (biology), family Cyprinidae, a very large clade of ray-finned fish mostly native to Eurasia. While carp are prized game fish, quarries and a ..., and roach. The genus ''Sphaerothecum'' is closely related to the genera '' Dermocystidium'' and '' Rhinosporidium''. References Fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leucaspius Delineatus
''Leucaspius'' is a monospecific genus of ray-finned fish belonging to the subfamily Leuciscinae, of the family Leuciscidae. The only species in this genus is ''Leucaspius delineatus'', known as the sunbleak, belica or moderlieschen. Thus species is found in Europe and Western Asia. Description The belica is a slender fish with a tapered body which is usually from long and seldom grows larger than . It has an upward-turned mouth and a short lateral line which extends about seven to ten scales from the gill cover. The anal fin is short and consists of eleven to fourteen rays. This is a silvery fish with a particularly intense band of colour running along the flank. Distribution The belica is found all over temperate continental Europe and barely extends to Central Asia in the Caucasus region. The southern limits of its range are essentially marked by the Pyrenees and the Alpide belt. The common name ''Moderlieschen'' is of German origin. Although it looks like a proper word tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotenone
Rotenone is an odorless, colorless, crystalline isoflavone. It occurs naturally in the seeds and stems of several plants, such as the jicama vine, and in the roots of several other members of the Fabaceae. It was the first-described member of the family of chemical compounds known as rotenoids. Rotenone is approved for use as a piscicide to remove alien fish species, see ''Uses.'' It has also been used as a broad-spectrum insecticide, but its use as an insecticide has been banned in many countries. Discovery The earliest written record of the now-known rotenone-containing plants used for killing leaf-eating caterpillars was in 1848; for centuries, these same plants had been used to poison fish. The active chemical component was first isolated in 1895 by a French botanist, Emmanuel Geoffroy, who called it ''nicouline'', from a specimen of ''Robinia nicou'', now called '' Deguelia utilis'', while traveling in French Guiana. He wrote about this research in his thesis, publishe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sungari
The Songhua or Sunghwa River (also Haixi or Xingal, ''Sungari'') is one of the primary rivers of China, and the longest tributary of the Amur. It flows about from Changbai Mountains on the China–North Korea border through China's northeastern Jilin and Heilongjiang provinces. The river drains of land, and has an annual discharge of to . The extreme flatness of the Northeast China Plain has caused the river to meander over time, filling the wide plain with oxbow lakes, as remnants of the previous paths of the river. Geography The Songhua rises south of Heaven Lake, near the China-North Korea border. From there it flows north, to be interrupted by the Baishan, Hongshi and Fengman hydroelectric dams. The Fengman Dam forms a lake that stretches for . Below the dam, the Second Songhua flows north through Jilin, then northwest until it is joined by its largest tributary, the Nen River, near Da'an, to create the Songhua proper. The Songhua turns east through Harbin, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amur
The Amur River () or Heilong River ( zh, s=黑龙江) is a perennial river in Northeast Asia, forming the natural border between the Russian Far East and Northeast China (historically the Outer Manchuria, Outer and Inner Manchuria). The Amur ''proper'' is long, and has a drainage basin of .Амур (река в Азии) Great Soviet Encyclopedia If including its main stem tributary, the Argun (Amur), Argun, the Amur is long, making it the list of longest rivers, world's tenth longest river. The Amur is an important river for the aquatic animal, aquatic fauna of Northeast Asia. The river basin is home to a variety of large predatory fish such as northern snakehead, Amur pike, taimen, Amur catfish, predatory carp and Elopichthys bambusa, yellowcheek, as wel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
