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Cobitis Hellenica
''Cobitis hellenica'' is a species of ray-finned fish in the true loach family (Cobitidae). It is endemic to Greece.Crivelli (2005b) It belongs to the subgenus ''Bicanestrinia'', together with '' C. arachthosensis'', '' C. meridionalis'' and '' C. trichonica''. According to cladistic analysis of DNA sequence data (nDNA RAG-1 and S7 ribosomal protein intron 1, and mtDNA cytochrome ''b''), the first of these is an extremely close relative and might arguably be included in the present species. ''C. arachthosensis'' is only found in the Arachthos River basin, parapatric to the range of ''C. hellenica''. Its natural habitats are the Louros and Thyamis River basins. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ....Crivelli (2005b), Perdices ''et al. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panos Stavros Economidis
Panos may refer to: People with the given name Panos is the diminutive of Panagiotis (Panayiotis), a Christian name. * Panos Antsaklis, American engineer *Panos Aravantinos (1886–1930), Greek and German opera scenery and costume designer and decorator *Panos Armenakas (born 1998), American-born Australian footballer * Panos Bardis (1924–1996), Greek American sociologist * Panos Constantinou (born 1985), Cypriot footballer *Panos Cosmatos (born 1974), Italian-Canadian film director and screenwriter *Panos Gavalas (1926–1988), Greek singer * Panos Ioannides, Cypriot novelist and playwright * Panos Ioannou (1951–2005), Cypriot biologist and neuroscientist *Panos Ipeirotis (born 1976), Greek professor * Panos Kalaitzakis (born 1999), Greek basketball player * Panos Kallitsis (born 1974), Greek hairstylist and make-up artist *Panos Kammenos (born 1965), Greek politician *Panos Karan (born 1982), British classical pianist, conductor and composer of Greek origin *Panos Kiamos, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intron
An intron is any nucleotide sequence within a gene that is not expressed or operative in the final RNA product. The word ''intron'' is derived from the term ''intragenic region'', i.e. a region inside a gene."The notion of the cistron .e., gene... must be replaced by that of a transcription unit containing regions which will be lost from the mature messenger – which I suggest we call introns (for intragenic regions) – alternating with regions which will be expressed – exons." (Gilbert 1978) The term ''intron'' refers to both the DNA sequence within a gene and the corresponding RNA sequence in RNA transcripts. The non-intron sequences that become joined by this RNA processing to form the mature RNA are called exons. Introns are found in the genes of most organisms and many viruses and they can be located in both protein-coding genes and genes that function as RNA (noncoding genes). There are four main types of introns: tRNA introns, group I introns, group II introns, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of Europe
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] |
Cobitis
''Cobitis'' is a genus of small freshwater fish in the family Cobitidae from temperate and subtropical Eurasia. It contains the "typical spiny loaches", including the well-known spined loach of Europe. Similar spiny loaches, occurring generally south of the range of ''Cobitis'', are nowadays separated in ''Sabanejewia''.Perdices, A., Bohlen, J. & Doadrio, I. (2008)The molecular diversity of adriatic spined loaches (Teleostei, Cobitidae).''Molecular Phylogenetics and Evolution, 46 (1): 382–390.'' Species There are currently 96 recognized species in this genus: * ''Cobitis amphilekta'' Vasil'eva & Vasil'ev, 2012 (Khvalyn spined loach) Vasil'eva, E.D. & Vasil'ev, V.P. (2012)''Cobitis amphilekta'' sp. nova, a New Species of Spined Loaches (Cobitidae, Cypriniformes) from the Caspian Sea Basin.''Journal of Ichthyology, 52 (3): 200–206.'' * ''Cobitis arachthosensis'' Economidis & Nalbant, 1996 * ''Cobitis arenae'' ( S. Y. Lin, 1934) * ''Cobitis australis'' Y. X. Chen, Y. F. Che ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetics And Evolution
''Molecular Phylogenetics and Evolution'' is a peer-reviewed scientific journal of evolutionary biology and phylogenetics. The journal is edited by E.A. Zimmer. Indexing The journal is indexed in: *EMBiology *Journal Citation Reports *Scopus Scopus is Elsevier's abstract and citation database launched in 2004. Scopus covers nearly 36,377 titles (22,794 active titles and 13,583 inactive titles) from approximately 11,678 publishers, of which 34,346 are peer-reviewed journals in top-l ... * Web of Science External links * Elsevier academic journals Evolutionary biology journals Phylogenetics Molecular biology Publications established in 1992 Monthly journals {{biology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FishBase
FishBase is a global species database of fish species (specifically finfish). It is the largest and most extensively accessed online database on adult finfish on the web.Marine Fellow: Rainer Froese ''Pew Environment Group''. Over time it has "evolved into a dynamic and versatile ecological tool" that is widely cited in scholarly publications. FishBase provides comprehensive species data, including information on , geographical distribution, and |
Habitat Loss
Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby reducing biodiversity and species abundance. Habitat destruction is the leading cause of biodiversity loss. Fragmentation and loss of habitat have become one of the most important topics of research in ecology as they are major threats to the survival of endangered species. Activities such as harvesting natural resources, industrial production and urbanization are human contributions to habitat destruction. Pressure from agriculture is the principal human cause. Some others include mining, logging, trawling, and urban sprawl. Habitat destruction is currently considered the primary cause of species extinction worldwide. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thyamis River
The Thyamis ( el, Θύαμις), also known as Glykys (Γλυκύς) or Kalamas (Καλαμάς), is a river in the Epirus region of Greece. It flows into the Ionian Sea. It is long, and its drainage area is about , over 99% of which on Greek territory. The names of the Chameria region (''Tsamouria'' in Greek), as well as the Chams, derive from the river's name. Thyamis in ancient Greece was mentioned by Pausanias as forming the boundary between Thesprotis and Kestrine. In addition, Suda and Ptolemaeus mentioned it. Some Renaissance scholars believed that the English River Thames owed its name to the River Thyamis, as early Celtic tribes were thought to have migrated from the Epirus region to England. While this belief influenced the modern spelling of the English river's name, it is no longer regarded as credible. Geography The source of the river is near the village Kalpaki, in the northwestern part of the Ioannina regional unit. It flows south at first, and turns southwes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louros River
The Louros ( el, Λούρος) is a river in the Epirus region, in northwestern Greece. It is long, and its drainage area is . It emerges from the ground in a large spring located immediately north of the village of Vouliasta, in Ioannina regional unit. It flows south through a canyon, and then a dam followed by a hydroelectric power station. The Louros flows past town of Filippiada, forming the boundary between Arta regional unit and Preveza regional unit. The river then veers east into the Preveza regional unit, flowing through the municipality of Louros, named after the river. The Louros then empties into the marshes at the northern end of the Ambracian Gulf The Ambracian Gulf, also known as the Gulf of Arta or the Gulf of Actium, and in some official documents as the Amvrakikos Gulf ( el, Αμβρακικός κόλπος, translit=Amvrakikos kolpos), is a gulf of the Ionian Sea in northwestern Greec .... With Strymon river, Louros is one of only two rivers in the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical manifestation of its ecological niche. Thus "habitat" is a species-specific term, fundamentally different from concepts such as environment or vegetation assemblages, for which the term "habitat-type" is more appropriate. The physical factors may include (for example): soil, moisture, range of temperature, and light intensity. Biotic factors will include the availability of food and the presence or absence of predators. Every species has particular habitat requirements, with habitat generalist species able to thrive in a wide array of environmental conditions while habitat specialist species requiring a very limited set of factors to survive. The habitat of a species is not necessarily found in a geographical area, it can be the interior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parapatric
In parapatric speciation, two subpopulations of a species evolve reproductive isolation from one another while continuing to exchange genes. This mode of speciation has three distinguishing characteristics: 1) mating occurs non-randomly, 2) gene flow occurs unequally, and 3) populations exist in either continuous or discontinuous geographic ranges. This distribution pattern may be the result of unequal dispersal, incomplete geographical barriers, or divergent expressions of behavior, among other things. Parapatric speciation predicts that hybrid zones will often exist at the junction between the two populations. In biogeography, the terms parapatric and parapatry are often used to describe the relationship between organisms whose ranges do not significantly overlap but are immediately adjacent to each other; they do not occur together except in a narrow contact zone. Parapatry is a geographical distribution opposed to sympatry (same area) and allopatry or peripatry (two similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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