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Pontastacus Eichwaldi
''Pontastacus'' is a genus of freshwater crayfish occurring in eastern Europe and western Asia. Classification and phylogeny ''Pontastacus'' belongs to the family Astacidae, one of the three families of Northern Hemisphere freshwater crayfish within the superfamily Astacoidea. The internal phylogeny of Astacidae can be shown in the cladogram below: Species Nine species are recognized: **''Pontastacus cubanicus'' (Birstein & Vinogradov, 1934) - Black Sea, Russia **'' Pontastacus danubialis'' Brodsky, 1981 - Danube Delta lakes, Ukraine **'' Pontastacus daucinus'' Brodsky, 1981 - Danube Delta lakes, Ukraine and Moldova **'' Pontastacus eichwaldi'' (Bott, 1950) - Caspian Sea **''Pontastacus kessleri'' (Schimkewitsch, 1886) - Turkestan **''Pontastacus leptodactylus'' (Eschscholtz, 1823) - around the Black Sea, in Crimea, Russia, and Turkey - "Turkish crayfish" **'' Pontastacus pachypus'' (Rathke, 1837) - Caspian Sea, Black Sea, Sea of Azov - "Caspian crayfish" **''Pontastacus pylz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pontastacus Leptodactylus
''Pontastacus leptodactylus'', the Danube crayfish, Galician crayfish, Turkish crayfish or narrow-clawed crayfish is a species of brackish water crayfish imported and introduced to Central Europe in 19th century from the Caspian Sea region. Description ''Pontastacus leptodactylus'' can grow up to in length from the tip of the rostrum to the end of the telson (tail), but is more commonly found at around in length. The sides of the thorax are very rough, usually pale yellow to pale green in colour. ''P. leptodactylus'' has two pairs of post-orbital ridges, the second of which may have spines. It also has a prominent tubercle (small nodule) on shoulder of the carapace. The claws of ''Pontastacus leptodactylus'' are long and narrow (hence the common name 'narrow-clawed crayfish'). Their upper surface is rough and the underside is the same colour as the body. A tubercle can be found on the fixed side of the claw. ''P. leptodactylus'' can be distinguished most easily from the Europ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the world, with its internationally recognised territory covering , and encompassing one-eighth of Earth's inhabitable landmass. Russia extends across Time in Russia, eleven time zones and shares Borders of Russia, land boundaries with fourteen countries, more than List of countries and territories by land borders, any other country but China. It is the List of countries and dependencies by population, world's ninth-most populous country and List of European countries by population, Europe's most populous country, with a population of 146 million people. The country's capital and List of cities and towns in Russia by population, largest city is Moscow, the List of European cities by population within city limits, largest city entirely within E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Of Azov
The Sea of Azov ( Crimean Tatar: ''Azaq deñizi''; russian: Азовское море, Azovskoye more; uk, Азовське море, Azovs'ke more) is a sea in Eastern Europe connected to the Black Sea by the narrow (about ) Strait of Kerch, and is sometimes regarded as a northern extension of the Black Sea. The sea is bounded by Russia on the east, by Ukraine on the northwest and southwest. The sea is largely affected by the inflow of the Don, Kuban, and other rivers, which bring sand, silt, and shells, which in turn form numerous bays, limans, and narrow spits. Because of these deposits, the sea bottom is relatively smooth and flat with the depth gradually increasing toward the middle. Also, due to the river inflow, water in the sea has low salinity and a high amount of biomass (such as green algae) that affects the water colour. Abundant plankton result in unusually high fish productivity. The sea shores and spits are low; they are rich in vegetation and bird colonie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pontastacus Pachypus
''Pontastacus pachypus'', the Caspian crayfish is a species of crayfish found in the Caspian Sea, the Don river, and parts of the Black Sea and Sea of Azov, where it lives in salinities of up to 14‰. It is listed as Data Deficient in the IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ....Gherardi, F. & Souty-Grosset, C. 2017''Pontastacus pachypus''.The IUCN Red List of Threatened Species 2017. Downloaded on 25 March 2022. References Astacidae Freshwater crustaceans of Europe Freshwater crustaceans of Asia Crustaceans described in 1837 Taxobox binomials not recognized by IUCN {{Crayfish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turkey
Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with a East Thrace, small portion on the Balkans, Balkan Peninsula in Southeast Europe. It shares borders with the Black Sea to the north; Georgia (country), Georgia to the northeast; Armenia, Azerbaijan, and Iran to the east; Iraq to the southeast; Syria and the Mediterranean Sea to the south; the Aegean Sea to the west; and Greece and Bulgaria to the northwest. Cyprus is located off the south coast. Turkish people, Turks form the vast majority of the nation's population and Kurds are the largest minority. Ankara is Turkey's capital, while Istanbul is its list of largest cities and towns in Turkey, largest city and financial centre. One of the world's earliest permanently Settler, settled regions, present-day Turkey was home to important Neol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crimea
Crimea, crh, Къырым, Qırım, grc, Κιμμερία / Ταυρική, translit=Kimmería / Taurikḗ ( ) is a peninsula in Ukraine, on the northern coast of the Black Sea, that has been occupied by Russia since 2014. It has a population of 2.4 million. The peninsula is almost entirely surrounded by the Black Sea and the smaller Sea of Azov. The Isthmus of Perekop connects the peninsula to Kherson Oblast in mainland Ukraine. To the east, the Crimean Bridge, constructed in 2018, spans the Strait of Kerch, linking the peninsula with Krasnodar Krai in Russia. The Arabat Spit, located to the northeast, is a narrow strip of land that separates the Sivash lagoons from the Sea of Azov. Across the Black Sea to the west lies Romania and to the south is Turkey. Crimea (called the Tauric Peninsula until the early modern period) has historically been at the boundary between the classical world and the steppe. Greeks colonized its southern fringe and were absorbed by the Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turkestan
Turkestan, also spelled Turkistan ( fa, ترکستان, Torkestân, lit=Land of the Turks), is a historical region in Central Asia corresponding to the regions of Transoxiana and Xinjiang. Overview Known as Turan to the Persians, western Turkestan has also been known historically as Sogdia, "Ma wara'u'n-nahr" (by its Arab conquerors), and Transoxiana by western travelers. The latter two names refer to its position beyond the River Oxus when approached from the south, emphasizing Turkestan's long-standing relationship with Iran, the Persian Empires, and the Umayyad and Abbasid Caliphates. Oghuz Turks (also known as Turkmens), Kyrgyzs, Uzbeks, Kazakhs, Khazars, Uyghurs and Hazaras are some of the Turkic inhabitants of the region who, as history progressed, have spread further into Eurasia forming such Turkic nations as Turkey, and subnational regions like Tatarstan in Russia and Crimea in Ukraine. Tajiks and Russians form sizable non-Turkic minorities. It is subdivided into A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pontastacus Kessleri
''Pontastacus'' is a genus of freshwater crayfish occurring in eastern Europe and western Asia. Classification and phylogeny ''Pontastacus'' belongs to the family Astacidae, one of the three families of Northern Hemisphere freshwater crayfish within the superfamily Astacoidea. The internal phylogeny of Astacidae can be shown in the cladogram below: Species Nine species are recognized: **''Pontastacus cubanicus'' (Birstein & Vinogradov, 1934) - Black Sea, Russia **'' Pontastacus danubialis'' Brodsky, 1981 - Danube Delta lakes, Ukraine **'' Pontastacus daucinus'' Brodsky, 1981 - Danube Delta lakes, Ukraine and Moldova **'' Pontastacus eichwaldi'' (Bott, 1950) - Caspian Sea **'' Pontastacus kessleri'' (Schimkewitsch, 1886) - Turkestan **''Pontastacus leptodactylus'' (Eschscholtz, 1823) - around the Black Sea, in Crimea, Russia, and Turkey - "Turkish crayfish" **'' Pontastacus pachypus'' (Rathke, 1837) - Caspian Sea, Black Sea, Sea of Azov - "Caspian crayfish" **''Pontastacus pyl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caspian Sea
The Caspian Sea is the world's largest inland body of water, often described as the world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central Asia, south of the fertile plains of Southern Russia in Eastern Europe, and north of the mountainous Iranian Plateau of Western Asia. It covers a surface area of (excluding the highly saline lagoon of Garabogazköl to its east) and a volume of . It has a salinity of approximately 1.2% (12 g/L), about a third of the salinity of average seawater. It is bounded by Kazakhstan to the northeast, Russia to the northwest, Azerbaijan to the southwest, Iran to the south, and Turkmenistan to the southeast. The sea stretches nearly from north to south, with an average width of . Its gross coverage is and the surface is about below sea level. Its main freshwater inflow, Europe's longest river, the Volga, enters at the shallow north end. Two deep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pontastacus Eichwaldi
''Pontastacus'' is a genus of freshwater crayfish occurring in eastern Europe and western Asia. Classification and phylogeny ''Pontastacus'' belongs to the family Astacidae, one of the three families of Northern Hemisphere freshwater crayfish within the superfamily Astacoidea. The internal phylogeny of Astacidae can be shown in the cladogram below: Species Nine species are recognized: **''Pontastacus cubanicus'' (Birstein & Vinogradov, 1934) - Black Sea, Russia **'' Pontastacus danubialis'' Brodsky, 1981 - Danube Delta lakes, Ukraine **'' Pontastacus daucinus'' Brodsky, 1981 - Danube Delta lakes, Ukraine and Moldova **'' Pontastacus eichwaldi'' (Bott, 1950) - Caspian Sea **''Pontastacus kessleri'' (Schimkewitsch, 1886) - Turkestan **''Pontastacus leptodactylus'' (Eschscholtz, 1823) - around the Black Sea, in Crimea, Russia, and Turkey - "Turkish crayfish" **'' Pontastacus pachypus'' (Rathke, 1837) - Caspian Sea, Black Sea, Sea of Azov - "Caspian crayfish" **''Pontastacus pylz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moldova
Moldova ( , ; ), officially the Republic of Moldova ( ro, Republica Moldova), is a Landlocked country, landlocked country in Eastern Europe. It is bordered by Romania to the west and Ukraine to the north, east, and south. The List of states with limited recognition, unrecognised state of Transnistria lies across the Dniester river on the country's eastern border with Ukraine. Moldova's Capital city, capital and largest city is Chișinău. Most of Moldovan territory was a part of the Principality of Moldavia from the 14th century until 1812, when it was Treaty of Bucharest (1812), ceded to the Russian Empire by the Ottoman Empire (to which Moldavia was a Vassal state of the Ottoman Empire, vassal state) and became known as Bessarabia. In 1856, southern Bessarabia was returned to Moldavia, which three years later united with Wallachia to form United Principalities, Romania, but Russian rule was restored over the whole of the region in 1878. During the 1917 Russian Revolution, B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pontastacus Daucinus
''Pontastacus'' is a genus of freshwater crayfish occurring in eastern Europe and western Asia. Classification and phylogeny ''Pontastacus'' belongs to the family Astacidae, one of the three families of Northern Hemisphere freshwater crayfish within the superfamily Astacoidea. The internal phylogeny of Astacidae can be shown in the cladogram below: Species Nine species are recognized: **''Pontastacus cubanicus'' (Birstein & Vinogradov, 1934) - Black Sea, Russia **'' Pontastacus danubialis'' Brodsky, 1981 - Danube Delta lakes, Ukraine **'' Pontastacus daucinus'' Brodsky, 1981 - Danube Delta lakes, Ukraine and Moldova **''Pontastacus eichwaldi'' (Bott, 1950) - Caspian Sea **''Pontastacus kessleri'' (Schimkewitsch, 1886) - Turkestan **''Pontastacus leptodactylus'' (Eschscholtz, 1823) - around the Black Sea, in Crimea, Russia, and Turkey - "Turkish crayfish" **'' Pontastacus pachypus'' (Rathke, 1837) - Caspian Sea, Black Sea, Sea of Azov - "Caspian crayfish" **''Pontastacus pylzo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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