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Amur Whitefish
The Amur whitefish (''Coregonus ussuriensis'') is a species of freshwater whitefish. It can withstand significant salinity levels. It reaches a maximum size of , with a maximum weight of . Its life expectancy is 10 to 11 years. The Amur whitefish is usually eaten salted or smoked. Distribution Its distribution includes the middle reaches of the Amur, downstream of Blagoveshchensk, all along the lower reaches and including its estuary. It lives as well in the Kukhtuy river, the Tatar Strait and the southern part of the Sea of Okhotsk. It also has been recorded in Sakhalin, in the lagoons of the northwestern and northeastern coasts, as well as in the Ainskoe and Sladkoe coastal lakes. It is also found in the Zeya and Sungari rivers, and in the Ussuri River and Lake Khanka.Viktorovsky, R.M. i R.A. Maximova, ''Chromosomal complex of Coregonus ussuriensis and some aspects of the evolution of karyotypes of Coregonidae''. Tsitologiya (Cytology). 20(8):967-970. Leningrad 1978 See ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lev Berg
Lev Semyonovich Berg, also known as Leo S. Berg (russian: Лев Семёнович Берг; 14 March 1876 – 24 December 1950) was a leading Russian geographer, biologist and ichthyologist who served as President of the Soviet Geographical Society between 1940 and 1950. He is known for his own evolutionary theory, nomogenesis (a form of orthogenesis incorporating mutationism) as opposed to the theories of Darwin and Lamarck. Life Lev Berg was born in Bessarabia in a Jewish family, the son of Simon Gregoryevich Berg, a notary, and Klara Lvovna Bernstein-Kogan. He graduated from the Second Kishinev Gymnasium in 1894. Like some of his relatives, Berg converted to Christianity in order to pursue his studies at Moscow State University. At Moscow University, Berg studied hydrobiology and geography. He later studied ichthyology and in 1928 was awarded he was also a member of the Russian Academy of Sciences. Lev Berg graduated from the Moscow State University in 1898. Between 190 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sungari
The Songhua or Sunghwa River (also Haixi or Xingal, russian: Сунгари ''Sungari'') is one of the primary rivers of China, and the longest tributary of the Amur. It flows about from the 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of The Arctic
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include non- salty mineral-rich waters such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Johann Friedrich Gmelin
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 intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1906
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coregonus
''Coregonus'' is a diverse genus of fish in the salmon family (Salmonidae). The ''Coregonus'' species are known as whitefishes. The genus contains at least 68 described extant taxa, but the true number of species is a matter of debate. The type species of the genus is '' Coregonus lavaretus''. Most ''Coregonus'' species inhabit lakes and rivers, and several species, including the Arctic cisco (''C. autumnalis''), the Bering cisco (''C. laurettae''), and the least cisco (''C. sardinella'') are anadromous, moving between salt water and fresh water. Many whitefish species or ecotypes, especially from the Great Lakes and the Alpine lakes of Europe, have gone extinct over the past century or are endangered. Among 12 freshwater fish considered extinct in Europe, 6 are ''Coregonus''. All ''Coregonus'' species are protected under appendix III of the Bern Convention. Taxonomy Phylogenetic evidence indicates that the most basal member of the genus is the highly endang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Freshwater Fish Of Russia
List of freshwater fish of Russia includes species of freshwater fish found in Russian Federation, and includes those introduced. Acipenseriformes Acipenseridae (Sturgeons) * Acipenser ** ''Acipenser baerii'' — Siberian sturgeon ** '' Acipenser gueldenstaedtii'' — Russian sturgeon ** '' Acipenser mikadoi '' — Sakhalin sturgeon ** '' Acipenser nudiventris'' — Fringebarbel sturgeon ** '' Acipenser persicus'' — Persian sturgeon ** '' Acipenser ruthenus'' — Sterlet ** '' Acipenser schrenckii'' — Japanese sturgeon ** '' Acipenser stellatus'' — Starry sturgeon ** '' Acipenser sturio'' — European sea sturgeon * Huso ** '' Huso dauricus'' — Kaluga sturgeon ** '' Huso huso'' — Beluga sturgeon Polyodontidae (Paddlefishes) * Polyodon ** '' Polyodon spathula'' — American paddlefish; North American species, acclimatized Clupeiformes Clupeidae (Herring, shads, sardines, and menhadens)) * Alosa (River herrings) ** ''Alosa alosa'' — Allis shadbr>** '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Khanka
Lake Khanka (russian: о́зеро Ха́нка) or Lake Xingkai (), is a freshwater lake on the border between Primorsky Krai, Russia and Heilongjiang province, Northeast China (at ). Etymology On the Delisle map of 1706, the lake is named ''Himgon'' and from it flows a river labelled with the names ''Usurou'' and ''Ousuri''. On the 1739 map of Johann Matthias Hase, the lake is named Lake ''Hinka'' and the river flowing from it called by the names ''Ousoury'' and '' Schur''. On the 1752 map of d'Anville, the lake is named ''Hink'', and the river from it is called '' Songhachan'', which flows, in turn, into the river ''Usuri''. On an 18th-century map showing the "Irkutsk governorate with the adjacent islands and the western coast of America", the river issuing from ''Lake Hinka'' is named as the ''Usuri''. On the 1860 map attached to the Convention of Peking, two lakes are shown: the larger ''Oz. Khankai'' (Russian: "Lake Khankai"), with ''Khankai'' glossed as signifying ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ussuri
The Ussuri or Wusuli (russian: Уссури; ) is a river that runs through Khabarovsk and Primorsky Krais, Russia and the southeast region of Northeast China. It rises in the Sikhote-Alin mountain range, flowing north and forming part of the Sino-Russian border (which is based on the Sino-Russian Convention of Peking of 1860), until it joins the Amur as a tributary to it near Khabarovsk. It is approximately long. The Ussuri drains the Ussuri basin, which covers . Its waters come from rain (60%), snow (30–35%), and subterranean springs. The average discharge is , and the average elevation is . Names The Ussuri has been known by many names. In Manchu, it was called the Usuri Ula or Dobi Bira (River of Foxes) and in Mongolian the Üssüri Müren. ''Ussuri'' is Manchu for ''soot-black river''. History * The Ussuri has a reputation for catastrophic floods. It freezes up in November and stays under the ice until April. The river teems with different kinds of fish: graylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeya (river)
The Zeya (russian: Зе́я; from indigenous Evenki word "djee" (blade); zh, 结雅; mnc, m= , Mölendroff: jingkiri bira) is a northern, left tributary of the Amur in Amur Oblast, Russia. It is long, and has a drainage basin of . The average flow of the river is . History The first Russian documented to enter the area was Vassili Poyarkov. Course It rises in the Toko-Stanovik mountain ridge, a part of the Stanovoy Range. The Zeya flows through the Zeya Reservoir, at the junction of the Tukuringra Range and Dzhagdy Range, and joins the Amur near Blagoveshchensk, at the border with China. Regulation of river discharge by Zeya Dam mitigates extremities of river flow down to 5000 m³/s. The Zeya contributes around 16% of both the average and maximum flow of de Amur because of the flow regulations. In the past, the Zeya could have contributed up to almost 50% of the Amur's maximum flow of approximately 30,000 m³/s. The main tributaries of the Zeya are Tok, Mulmuga, Bryanta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Whitefish
The freshwater whitefish are fishes of the subfamily Coregoninae, which contains whitefishes (both freshwater and anadromous) and ciscoes, and is one of three subfamilies in the salmon family Salmonidae. Apart from the subfamily Coregoninae, the family Salmonidae includes the salmon, trout, and char species of the subfamily Salmoninae, and grayling species of the subfamily Thymallinae. Freshwater whitefish are distributed mainly in relatively cool waters throughout the northern parts of the Northern Hemisphere. The Coregoninae subfamily consists of three nominal genera: *''Coregonus'' Linnaeus, 1758 – whitefishes and ciscoes, which according to some authors number more than 60 species. There are differing opinions on the classification of some species within the genus and the overall number of species. Some species in Arctic regions of Asia and North America forage in marine waters. *''Prosopium'' Jordan, 1878 – round whitefishes, which includes six species, three of which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
