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Aristotle's Catfish
Aristotle's catfish (''Silurus aristotelis'') is a species of fish in the family Siluridae. It is endemic to Greece, where it occurs in the Acheloos River drainage. Its natural habitat is freshwater lakes. It is threatened by habitat loss. This species grows to a length of TL and is of importance to local commercial fisheries. It is known from Lake Trichonida, Lake Lysimachia and Lake Amvrakia and introduced to Lake Volvi and Lake Ioannina in the 1980s thus exclusively lives in lakes. Threats may be water pollution and overfishing. Its name derives from the fact that it was first described by Aristotle in his History of Animals ''History of Animals'' ( grc-gre, Τῶν περὶ τὰ ζῷα ἱστοριῶν, ''Ton peri ta zoia historion'', "Inquiries on Animals"; la, Historia Animalium, "History of Animals") is one of the major texts on biology by the ancient Gr .... References * Further reading Aristotle's catfish explanation of its name Silurus Fish descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel Garman
Samuel Walton Garman (June 5, 1843 – September 30, 1927), or "Garmann" as he sometimes styled himself, was a naturalist/zoologist from Pennsylvania. He became noted as an ichthyologist and herpetologist. Biography Garman was born in Indiana County, Pennsylvania, on 5 June 1843. In 1868 he joined an expedition to the American West with John Wesley Powell. He graduated from the Illinois State Normal University in 1870, and for the following year was principal of the Mississippi State Normal School. In 1871, he became professor of natural sciences in Ferry Hall Seminary, Lake Forest, Illinois, and a year later became a special pupil of Louis Agassiz. He was a friend and regular correspondent of the naturalist Edward Drinker Cope, and in 1872 accompanied him on a fossil hunting trip to Wyoming. In 1870 he became assistant director of herpetology and ichthyology at Harvard's Museum of Comparative Zoology. His work was mostly in the classification of fish, especially sharks, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Amvrakia
Lake Amvrakia or Ambracia ( el, Αμβρακία) is a freshwater lake in Aetolia-Acarnania, in western Greece. It lies between the towns of Agrinio and Amphilochia, and is long, wide and has a maximum depth of . It is a Natura 2000 protected habitat. Origin Lake Amvrakia was a result of tectonic movement. It is karstic and semipolje type. The lake formed from deposits of Mesozoic The Mesozoic Era ( ), also called the Age of Reptiles, the Age of Conifers, and colloquially as the Age of the Dinosaurs is the second-to-last era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceo ... limestone. Location and Geology Lake Amvrakia lies along a depression northwest of Lake Ozeros and west of Mount Thyamos or Petalas. Its total surface area used to be 13.6 km2, but that area has shrunk drastically in recent years. One of the reasons for this reduction in size was a long drought and the other was the draining of the shallow northe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catfish Of Europe
Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to detritivores (species that eat dead material on the bottom), and even to a tiny parasitic species commonly called the candiru, ''Vandellia cirrhosa''. Neither the armour-plated types nor the naked types have scales. Despite their name, not all catfish have prominent barbels or "whiskers". Members of the Siluriformes order are defined by features of the skull and swimbladder. Catfish are of considerable commercial importance; many of the larger species are farmed or fished for food. Many of the smaller species, particularly the genus ''Corydoras'', are important in the aquarium hobby. Many catfish are nocturnal, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1890
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. Most fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurus
''Silurus'' is a genus of catfishes native to Europe and Asia. Species There are currently 20 recognized species in this genus: * ''Silurus aristotelis'' Garman, 1890 (Aristotle's catfish) * ''Silurus asotus'' Linnaeus, 1758 (Amur catfish) * ''Silurus biwaensis'' Tomoda, 1961 (Lake Biwa giant catfish) * ''Silurus burmanensis'' Thant, 1967 * ''Silurus caobangensis'' V. H. Nguyễn, T. H. N. Vũ & T. D. P. Nguyễn, 2015 (Yellow catfish) * ''Silurus chantrei'' Sauvage, 1882 * ''Silurus dakrongensis'' V. H. Nguyễn, T. H. N. Vũ & T. D. P. Nguyễn, 2015 (Dakrong catfish) * ''Silurus duanensis'' X. Y. Hu, J. H. Lan & C. G. Zhang, 2004 * ''Silurus glanis'' Linnaeus, 1758 (Wels catfish) * ''Silurus grahami'' Regan, 1907 * ''Silurus langsonensis'' V. H. Nguyễn, T. H. N. Vũ & T. D. P. Nguyễn, 2015 (Flower catfish) * ''Silurus lanzhouensis'' H. L. Chen, 1977 (Lanzhou catfish) * ''Silurus lithophilus'' Tomoda, 1961 (Rock catfish) * ''Silurus longibarbatus'' Li, L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Animals
''History of Animals'' ( grc-gre, Τῶν περὶ τὰ ζῷα ἱστοριῶν, ''Ton peri ta zoia historion'', "Inquiries on Animals"; la, Historia Animalium, "History of Animals") is one of the major texts on biology by the ancient Greek philosopher Aristotle, who had studied at Plato's Academy in Athens. It was written in the fourth century BC; Aristotle died in 322 BC. Generally seen as a pioneering work of zoology, Aristotle frames his text by explaining that he is investigating the ''what'' (the existing facts about animals) prior to establishing the ''why'' (the causes of these characteristics). The book is thus an attempt to apply philosophy to part of the natural world. Throughout the work, Aristotle seeks to identify differences, both between individuals and between groups. A group is established when it is seen that all members have the same set of distinguishing features; for example, that all birds have feathers, wings, and beaks. This relationship between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristotle
Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatetic school of philosophy within the Lyceum and the wider Aristotelian tradition. His writings cover many subjects including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics, politics, meteorology, geology, and government. Aristotle provided a complex synthesis of the various philosophies existing prior to him. It was above all from his teachings that the West inherited its intellectual lexicon, as well as problems and methods of inquiry. As a result, his philosophy has exerted a unique influence on almost every form of knowledge in the West and it continues to be a subject of contemporary philosophical discussion. Little is known about his life. Aristotle was born in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overfishing
Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area. Overfishing can occur in water bodies of any sizes, such as ponds, wetlands, rivers, lakes or oceans, and can result in resource depletion, reduced biological growth rates and low biomass levels. Sustained overfishing can lead to critical depensation, where the fish population is no longer able to sustain itself. Some forms of overfishing, such as the overfishing of sharks, has led to the upset of entire marine ecosystems. Types of overfishing include: growth overfishing, recruitment overfishing, ecosystem overfishing. The ability of a fishery to recover from overfishing depends on whether its overall carrying capacity and the variety of ecological conditions are suitable for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Pollution
Water pollution (or aquatic pollution) is the contamination of water bodies, usually as a result of human activities, so that it negatively affects its uses. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water pollution results when contaminants are introduced into these water bodies. Water pollution can be attributed to one of four sources: sewage discharges, industrial activities, agricultural activities, and urban runoff including stormwater. It can be grouped into surface water pollution (either fresh water pollution or marine pollution) or groundwater pollution. For example, releasing inadequately treated wastewater into natural waters can lead to degradation of these aquatic ecosystems. Water pollution can also lead to water-borne diseases for people using polluted water for drinking, bathing, washing or irrigation. Water pollution reduces the ability of the body of water to provide the ecosystem services (such as drinking water) that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Ioannina
Lake Pamvotida or Pamvotis ( el, Λίμνη Παμβώτιδα/Παμβώτις), commonly also Lake of Ioannina ( el, Λίμνη των Ιωαννίνων, ''Limni ton Ioanninon'') is the largest lake of Epirus, located in the central part of the Ioannina regional unit in northern Greece. The regional capital Ioannina to the west and the town of Perama to the north are urban settlements fringing the lake while the remaining of its periphery is composed of farmland. The lake features small fishing ports and a boating port. There is a regular boat service to the Ioannina Island. The Greek National Road 6 surrounds the northern half of the lake. Geography Lake Pamvotida is situated at 470 m elevation, south of the Mitsikeli mountains. It is fed by several small rivers. It has no surface outflow, but it is drained through karstic sinkholes towards the rivers Arachthos, Louros and Kalamas. In 1960 a tunnel and ditch were constructed that drain from the northern end of the lake t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Volvi
Lake Volvi ( el, Λίμνη Βόλβη - ''Límni Vólvi'') is located at the root of the Chalkidiki peninsula, in the Thessaloniki regional unit of Greece. It is the second largest lake in the country at length and width. The area is 68 km² and the depth is 20 m. It is located east of Lake Koroneia (Lake Langadas). The Via Egnatia Roman road runs along the northern shore of the lake, while a more ancient road ran along its southern one. On its east is the narrow valley of Rentina, also known as the "Macedonian Tempe". The municipalities of Volvi and Langadas have shoreline on the lake. History About a million years ago, Lake Volvi, Lake Koroneia and the entire Mygdonia formed a single huge lake. In the antique description by Thucydides, ''Bolbe'' was the name of a lake in Mygdonia, located near the Aegean Sea. The lake emptied itself into the Strymon Gulf by means of a stream flowing through the pass once known as Aulon or Arethusa. The name of the stream is not men ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Lysimachia
Lysimachia ( el, Λυσιμαχία) is a lake in Aetolia-Acarnania, western Greece. Its area is 13.2 km², its depth is around 9 m. It is fed by the small river Ermitsa, and by a canal that connects the lake with the larger Lake Trichonida to its east. Its outflow is the river Dimikos, which drains into the river Acheloos. The city of Agrinio lies 6 km to the northeast. References *''The first version of the article is translated from the article at the Greek Wikipedia (Main page)'' Landforms of Aetolia-Acarnania Lysimachia ''Lysimachia'' () is a genus consisting of 193 accepted species of flowering plants traditionally classified in the family Primulaceae. Based on a molecular phylogenetic study it was transferred to the family Myrsinaceae, before this family wa ... Agrinio Landforms of Western Greece {{WestGreece-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
