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Leuciscus Bearnensis
The Bearn beaked dace (''Leuciscus bearnensis'') is a putative species of cyprinid fish, recorded from several localities in the Adour drainage in France. Description The Bearn beaked dace is distinguished from other western European members of the genus ''Leuciscus'' by having a keel which runs from its nape to the origin of the dorsal fin, a projecting snout which has a rounded tip and a projecting upper jaw, the dorsal profile of head and body shows a distinct hump; the snout is 32-35% of the length of the head; and the lateral line has around 47-52 scales. It also has thick, fleshy lips and a large eye, the diameter of them being approximately a fifth to a quarter of the length of the head. It grows to 280mm in standard length. Distribution The Bearn beaked dave occurs only in the drainage basin of the Adour in south-western France Habitat and ecology The Bearn beaked dace is found in streams, especially in sections of the streams which have clear water and current with cool ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The IUCN Red List Of Threatened Species
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 biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provide sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Émile Blanchard
Charles Émile Blanchard (6 March 1819 – 11 February 1900) was a French zoologist and entomologist. Career Blanchard was born in Paris. His father was an artist and naturalist and Émile began natural history very early in life. When he was 14 years old, Jean Victoire Audouin (1797—1841), allowed him access to the laboratory of the Muséum national d'Histoire naturelle. In 1838, he became a technician or ''préparateu''r in this then, as now, famous institution. In 1841, he became assistant-naturalist. He accompanied Henri Milne-Edwards (1800—1885) and Jean Louis Armand de Quatrefages de Breau (1810—1892) to Sicily on a marine zoology expedition. He published, in 1845 a ''Histoire des insectes'', or History of the insects and, in 1854—1856 ''Zoologie agricole'' or Agricultural Zoology. This last work is remarkable: it presents in a precise way the harmful or pest species and the damage they cause to various crop plants. This work was illustrated by his father. Bl ... [...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 |
Cyprinid
Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest vertebrate animal family in general with about 3,000 species, of which only 1,270 remain extant, divided into about 370 genera. Cyprinids range from about 12 mm in size to the giant barb (''Catlocarpio siamensis''). By genus and species count, the family makes up more than two-thirds of the ostariophysian order Cypriniformes. The family name is derived from the Greek word ( 'carp'). Biology and ecology Cyprinids are stomachless fish with toothless jaws. Even so, food can be effectively chewed by the gill rakers of the specialized last gill bow. These pharyngeal teeth allow the fish to make chewing motions against a chewing plate formed by a bony process of the skull. The pharyngeal teeth are unique to each species and are used by scient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adour
The Adour (; eu, Aturri; oc, Ador) is a river in southwestern France. It rises in High-Bigorre (Pyrenees), in the commune of Aspin-Aure, and flows into the Atlantic Ocean (Bay of Biscay) near Bayonne. It is long, of which the uppermost ca. is known as the ''Adour de Payolle''. At its final stretch, i.e. on its way through Bayonne and a short extent upstream, the river draws the border between the Northern Basque Country and Landes regions. Places along the river ''Départements'' and towns along the river include: * Hautes-Pyrénées: Bagnères-de-Bigorre, Tarbes, Maubourguet * Gers: Riscle * Landes: Aire-sur-l'Adour, Dax, Tarnos * Pyrénées-Atlantiques: Bayonne Tributaries The main tributaries of the Adour are, from source to mouth: * Adour de Gripp (also ''Adour du Tourmalet'', 15 km) * Adour de Lesponne (19 km) * Échez (64 km) * Arros (130 km) * Léez (56 km) * Gabas (117 km) * Midouze (151 km) * Louts (86 km) * L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pacific and Indian Oceans. Its Metropolitan France, metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Kingdom of the Netherlands, Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin (island), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuciscus
''Leuciscus'' is a genus of fish belonging to the family Cyprinidae. They are inland water fishes commonly called Eurasian daces. The genus is widespread from Europe to Siberia. Species broadly distributed in Europe include the common dace ''Leuciscus leuciscus'' and the ide ''L. idus''. The European chubs were formerly also included in ''Leuciscus'', but they are now usually separated in another genus, ''Squalius'' (e.g. the chub, ''Squalius cephalus''). The delimitation of ''Leuciscus'' and ''Squalius'' is not completely resolved; some species have been moved from one genus to the other only in recent years. The genera ''Petroleuciscus'' and '' Telestes'' have also been split off from ''Leuciscus'' recently; for the latter the same holds true as for ''Squalius'' regarding the unclear delimitations. Species Currently, 19 recognized species are in this genus: * ''Leuciscus aspius'' (Linnaeus, 1758) (asp) * ''Leuciscus baicalensis'' ( Dybowski, 1874) (Siberian dace) * ''Leuc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Fin
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through convergent evolution they have independently evolved external superficial fish-like body plans adapted to their marine environments, including most numerously fish, but also mammals such as cetaceans (whales, dolphins, and porpoises), and even extinct ancient marine reptiles such as various known species of ichthyosaurs. Most species have only one dorsal fin, but some have two or three. Wildlife biologists often use the distinctive nicks and wear patterns which develop on the dorsal fins of large cetaceans to identify individuals in the field. The bony or cartilaginous bones that support the base of the dorsal fin in fish are called ''pterygiophores''. Functions The main purpose of the dorsal fin is to stabilize the animal against rollin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Line
The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines serve an important role in schooling behavior, predation, and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors, which are organs used to detect electrical impulses, and as such, these systems remain closely linked. Most amphibian larvae and some fully aquatic adult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Standard Length
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal (tail) fin. * Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes (lampreys), and (usually) Elasmobranchii (sharks and rays), as well as some other fishes. Total length measu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuciscus Burdigalensis
''Leuciscus burdigalensis'', the beaked dace, is a cyprinid freshwater fish from central and southern France. It is recorded both from Atlantic and Mediterranean drainages – from Loire to Garonne, and from Tech to Aude, respectively. Dace recorded in the '' Herault'' may also be ''L. burdigalensis''. See also * Bearn beaked dace * Long-snout dace The long-snout dace (''Leuciscus oxyrrhis'') is a species of cyprinid fish, found in the Garonne drainage in France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of ... References Leuciscus Cyprinid fish of Europe Fish described in 1844 Taxa named by Achille Valenciennes {{Leuciscinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long-snout Dace
The long-snout dace (''Leuciscus oxyrrhis'') is a species of cyprinid fish, found in the Garonne drainage in France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area .... References Leuciscus Fish described in 1873 {{Leuciscinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
