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Lophiobagrus Cyclurus
The African bullhead (''Lophiobagrus cyclurus'') is a species of claroteid catfish endemic to Lake Tanganyika at the border of Burundi, the Democratic Republic of the Congo, Tanzania, and Zambia. This species grows to a length of TL. This species is nocturnal in habit, hiding amongst rocks during daylight hours. The diet consists of small crustaceans, beetle larvae and chironomid The Chironomidae (informally known as chironomids, nonbiting midges, or lake flies) comprise a family of nematoceran flies with a global distribution. They are closely related to the Ceratopogonidae, Simuliidae, and Thaumaleidae. Many species ... larvae. The mucus secreted by this species is toxic to other fishes. References * Lophiobagrus Claroteidae Fish of Lake Tanganyika Fish described in 1937 Taxa named by E. Barton Worthington Taxa named by Kate Bertram Taxonomy articles created by Polbot {{catfish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edgar Barton Worthington
Dr. Edgar Barton Worthington, M.A., Ph.D., (Cantab)., CBE (13 January 190514 October 2001) was a British ecologist and science administrator. Biography His parents were Edgar and Amy Worthington. His early education was at Rugby School, before he went up to gain a First in Zoology at Gonville and Cauis College at Cambridge. After university, his work alternated between Britain and Africa. He took part in an African lakes expedition in 192731; and in an African research expedition 193437, for which he was awarded the Mungo Park Medal of the Royal Scottish Geographical Society. He was secretary to and first full-time director of the Freshwater Biological Association 193746. He returned to Africa in the late 1940s as science and development advisor. He was deputy scientific director for the Nature Conservancy 195765, and scientific director of the International Biological Programme (IBP) 196474. His interests included water biology and international nature conservation, incl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustaceans
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By E
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1937
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] |
Fish Of Lake Tanganyika
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. Mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claroteidae
The Claroteidae are a family of catfish (order Siluriformes) found in Africa. This family was separated from Bagridae. However, the monophyly of the family is sometimes contested. The 12 genera contain 86 known species of claroteids in two subfamilies, Claroteinae and Auchenoglanidinae. The subfamily Auchenoglanidinae is sometimes classified as a separate family Auchenoglanididae. This group was also often formerly placed in Bagridae. The monophyly of Auchenoglanidinae is uncontested; it contains the three genera '' Auchenoglanis'', ''Parauchenoglanis'' and '' Notoglanidium''. Two commonly known species are the giraffe catfish, ''Auchenoglanis occidentalis'', and the African big-eye catfish, ''Chrysichthys ''Chrysichthys'' is a genus of claroteid catfishes native to Africa. Two fossil species are known. ''Chrysichthys macrotis'', Van Neer, 1994, is known from the Miocene-Pliocene of the Albertine Rift in Uganda and ''Chrysichthys mahengeensis'', M ... longipinnis''. Clarot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lophiobagrus
''Lophiobagrus'' is a genus of catfish in the family Claroteidae. They are endemic to Lake Tanganyika in Africa. Species There are currently four recognized species in this genus: * '' Lophiobagrus aquilus'' R. M. Bailey & D. J. Stewart, 1984 * ''Lophiobagrus asperispinis'' R. M. Bailey & D. J. Stewart, 1984 * '' Lophiobagrus brevispinis'' R. M. Bailey & D. J. Stewart, 1984 * '' Lophiobagrus cyclurus'' (Worthington & Ricardo Ricardo is the Spanish and Portuguese cognate of the name Richard. It derived from Proto-Germanic ''*rīks'' 'king, ruler' + ''*harduz'' 'hard, brave'. It may be a given name, or a surname. People Given name *Ricardo de Araújo Pereira, Portugue ..., 1937) – African bullhead References Claroteidae Catfish genera * Freshwater fish genera Taxa named by Max Poll Taxonomy articles created by Polbot {{catfish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chironomid
The Chironomidae (informally known as chironomids, nonbiting midges, or lake flies) comprise a family of nematoceran flies with a global distribution. They are closely related to the Ceratopogonidae, Simuliidae, and Thaumaleidae. Many species superficially resemble mosquitoes, but they lack the wing scales and elongated mouthparts of the Culicidae. The name Chironomidae stems from the Ancient Greek word ''kheironómos'', "a pantomimist". Common names and biodiversity This is a large taxon of insects; some estimates of the species numbers suggest well over 10,000 world-wide. Males are easily recognized by their plumose antennae. Adults are known by a variety of vague and inconsistent common names, largely by confusion with other insects. For example, chironomids are known as "lake flies" in parts of Canada and Lake Winnebago, Wisconsin, but "bay flies" in the areas near the bay of Green Bay, Wisconsin. They are called "sand flies", "muckleheads", "muffleheads", "Canadian so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beetle
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae (ladybirds or ladybugs) eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops. Beetles typically have a particularly hard e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nocturnal
Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed senses of hearing, smell, and specially adapted eyesight. Some animals, such as cats and ferrets, have eyes that can adapt to both low-level and bright day levels of illumination (see metaturnal). Others, such as bushbabies and (some) bats, can function only at night. Many nocturnal creatures including tarsiers and some owls have large eyes in comparison with their body size to compensate for the lower light levels at night. More specifically, they have been found to have a larger cornea relative to their eye size than diurnal creatures to increase their : in the low-light conditions. Nocturnality helps wasps, such as ''Apoica flavissima'', avoid hunting in intense sunlight. Diurnal animals, including squirrels and songbirds, are active du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kate Bertram
Cicely Kate Bertram, Justice of the peace, JP (née Ricardo; 8 July 1912 – 6 July 1999) was a British academic specialising in East African and Palestinian fisheries, and working with her husband Colin Bertram on Sirenia, sirenea. Part of the 1930s "Cambridge school" of biologists, she contributed to two seminal reports on freshwater fish in East Africa, eastern Africa. Early life and education Bertram was born in London to Harry Ricardo, Sir Harry Ricardo and Beatrice Hale in 1912. She attended Newnham College, Cambridge. In 1939, she married Colin Bertram, British marine zoologist, with whom she had four sons. Career After the second world war, Bertram returned to Cambridge, where she taught at Newnham College, Cambridge, Newnham College and Girton College, Cambridge, Girton College, which, at the time, were the only colleges which admitted women to the University of Cambridge. While at the university, she was a member of the "Dining Group", who helped establish New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Measurement
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 meas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
