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Romanichthys
''Romanichthys'' is a genus of ray-finned fish, one of two genera in the tribe Romanichthyini, which along with the tribe Luciopercini, forms the subfamily Luciopercinae of the family Percidae, alongside the perches, ruffes, and darters. The genus contains the single species ''Romanichthys valsanicola'', known as the sculpin-perch, asprete, or Romanian darter. This fish was described in 1957 by Romanian student scientists M. Dumitrescu, P. Bănărescu, and N. Stoica. Local names include ''asprete'', ''poprete'', and ''sforete''. Endemic to a very restricted area in southern Romania, it was found in the upper reach of the Argeş River and in two of its tributaries: Râul Doamnei and Vâlsan. Due to hydrotechnical constructions and deterioration of its habitat, it survived only in the tributary Vâlsan. Description ''R. valsanicola'' is a small, greyish-brown fish growing to about long, covered with small, rough scales. It can be distinguished from other European perch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luciopercini
''Sander'' (formerly known as ''Stizostedion'') is a genus of predatory ray-finned fish in the family Percidae, which also includes the perches, ruffes, and darters. They are also known as "pike-perch" because of their resemblance to fish in the unrelated Esocidae (pike) family. They are the only genus in the monotypic tribe Luciopercini, which is one of two tribes in the subfamily Luciopercinae, Characteristics ''Sander'' species have elongated and laterally compressed bodies and they range in total length from in the Volga pikeperch (''S. volgensis'') to in the zander (''S. lucioperca''). The species within the genus share canine-like teeth that are at their largest in the zander, and although they are not present in adult Volga pikeperches, they do possess them as juveniles. in addition, they have thin rows of teeth on their jaws, vomer, and palatines, the preopercle shows strong serrations along its edges, a continuous lateral line reaches all the way from the head to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Râul Doamnei
Râul Doamnei is a left tributary of the river Argeș in Romania. Its source is on the eastern slope of Moldoveanu Peak (Făgăraș Mountains), the highest mountain peak in Romania. It discharges into the Argeș just north of Pitești. Its upper course, upstream from the confluence with the Zârna, is also called ''Valea Rea''. Its length is and its basin size is . It frequently dries up in summer, owing to the works upstream that have redirected part of its water supply toward a reservoir serving the hydroelectric plant on the Argeș. Râul Doamnei flows through a hilly region, forming narrow strips of fertile plain on both of its banks. The following towns and villages are situated along the river Râul Doamnei, from source to mouth: Slatina, Sboghițești, Corbi, Domnești, Pietroșani, Coșești, Dârmănești, Purcăreni, Colibași and Ștefănești. Name The stream's name literally means "the lady's river", or "the princess's river". ''Râul'' is Romanian for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romanichthyini
Romanichthyini is a tribe (taxonomy), tribe of freshwater ray-finned fish which is one of two tribes in the subfamily Luciopercinae, which in turn is classified under the Family (biology), family Percidae, the family also includes the perches, Sander (fish), pikeperches, Gymnocephalus, ruffes and Darter (fish), darters. Taxonomy The Romanichthyini is the sister taxon to the tribe Luciopercini and together they form the subfamily Luciopercinae. There are two genera classified within the tribe, although there is evidence to suggest that it may be a single genus and that the asprete should be classified within ''Zingel''. Apart from one species which is found in the Rhone the species in the tribe are endemism, endemic to the Danube basin. The two genera are: * ''Romanichthys'' Dumitrescu, Bănărescu & Stoica 1957 * ''Zingel'' Hippolyte Cloquet, Cloquet, 1817 References {{Taxonbar, From=Q97495923 Luciopercinae Fish tribes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vâlsan River (Argeș)
The Vâlsan is a left tributary of the river Argeș in Romania. It discharges into the Argeș near Merișani. e-calauza.ro Its length is and its basin size is . The Vâlsan originates in the , where its source is a trough-shaped glacial hollow located between the Picuiata and Scărișoara Mare mountains. The river flows for a mere 84.6 kilometers. Its course runs parallel to the Argeș River. The Vâlsan River's mouth is located at Merișani. In 1967 the Vâlsan's course was altered significantly by the construction of a reservoir and a hydroelectric plant. Tributaries Th ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luciopercinae
The Luciopercinae is a subfamily of ray-finned fish, classified within the Family (biology), family Percidae, the subfamily includes the pike-perches and zingels. The pike-perches of the genus ''Zander, Sander'' have an Holarctic distribution while the zingels of the Tribe (biology), tribe Romanichthyini are found in Europe. They are largely freshwater species but some can be found in brackish water. Characteristics The species within the Luciopercinae have a number of morphological characteristics in common. These are the possession weak spines in the anal fin, the lateral line extends as far as the margin of the caudal fin and there are additional lines over and under the main lateral line, they have a cleithrum which does not have serrations on the pectoral girdle and they have a vertebrae count of 41–50. Distribution The Luciopercinae has a Holarctic distribution, the pike-perches of the genus ''Sander'' are found in Eurasia and North America and includes such commercially ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percidae
The Percidae are a family of ray-finned fish, part of the order Perciformes, which are found in fresh and brackish waters of the Northern Hemisphere. The majority are Nearctic, but there are also Palearctic species. The family contains more than 200 species in 11 genera. The perches, and their relatives are in this family; well-known species include the walleye, sauger, ruffe, and three species of perch. However, small fish known as darters are also a part of this family. Characteristics The family is characterised by having the dorsal fin split into two which are normally separated or have a narrow connection, although this is wider in the genus ''Zingel'', the front section contains the spines and the rear section contains the soft rays. The anal fin contains 1 or 2 spines, if there is a second spine it is typically weak. The pelvic fins are placed on the thorax and have a single spine and 5 soft rays. They also have skeletal synapomorphies. The maximum size attained in in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Taxon
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zingel
''Zingel'' is a genus of fish in the family Percidae. They are long and slender, reaching 12 to 48 cm in length. They are found in rivers and streams in Europe. They feed mainly on aquatic invertebrates such as crustaceans and insect larvae, and also eat small fish. While they were all classed as endangered or vulnerable in the past, environmental improvements have allowed some to be reclassified to least concern. Species The genus contains these species:Maitland, Peter S. and Keith Linsell (2006) ''Philip's Guide to Freshwater Fish of Britain and Europe'', Philip's, London. *''Zingel asper'' (Linnaeus, 1758) (Rhone streber) *'' Zingel balcanicus'' ( S. L. Karaman, 1937) (Vardar streber) *'' Zingel streber'' ( Siebold, 1863) (Danube streber) *'' Zingel zingel'' (Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Romania
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Territoriality
In ethology, territory is the sociographical area that an animal consistently defends against conspecific competition (or, occasionally, against animals of other species) using agonistic behaviors or (less commonly) real physical aggression. Animals that actively defend territories in this way are referred to as being territorial or displaying territorialism. Territoriality is only shown by a minority of species. More commonly, an individual or a group of animals occupies an area that it habitually uses but does not necessarily defend; this is called its home range. The home ranges of different groups of animals often overlap, and in these overlap areas the groups tend to avoid each other rather than seeking to confront and expel each other. Within the home range there may be a ''core area'' that no other individual group uses, but, again, this is as a result of avoidance. Function The ultimate function of animals inhabiting and defending a territory is to increase the indiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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