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Conraua Robusta
''Conraua robusta'', the robust giant frog or Cameroon slippery frog, is a species of frog in the family Conrauidae found in western Cameroon and eastern Nigeria. This species is congeneric to the goliath frog, the largest known frog species in the world. Description Male ''Conraua robusta'' grow to a snout–vent length of and females to . The body is long and compact. The snout is short and rounded. The head is broad and flat. The dorsum is densely covered with small, round warts. The legs are muscular and covered with numerous parallel ridges. The toe tips have large oval discs. The body varies dorsally from beige to olive to brown with irregular black patterning, turning to almost uniformly black in old individuals. The venter is white or black, especially on the throat, .chest, and towards the knees. Habitat ''Conraua robusta'' occurs in and near cold, fast-flowing streams in both grassland and forest areas at elevations of above sea level; it does not require tree cover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fritz Nieden
Fritz Nieden (1883 – 1942) was a German zoologist who specialized in African herpetology. He worked as a zoologist at the ''Museum für Naturkunde'' in Berlin. His name is associated with Nieden's dwarf skink, '' Panaspis megalurus''. In 1911 he was the first to describe '' Callulina kreffti'', a species of frog, which until 2004 was the only known species of the genus ''Callulina''. The Sagala caecilian, ''Boulengerula niedeni'', is named after him. Selected writings *Die Amphibienfauna von Kamerun' (1908), Mitteilungen aus dem Zoologischen Museum in Berlin 3: 491–518 ("''Amphibian fauna of Cameroon''") *''Die Reptilien (außer den Schlangen) und Amphibien'', 1910 - Reptiles (other than snakes) and amphibians. *''Gymnophoina (Amphibia apoda)'', 1913 - Gymnophiona Caecilians (; ) are a group of limbless, vermiform or serpentine amphibians. They mostly live hidden in the ground and in stream substrates, making them the least familiar order of amphibians. Caecilians are mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conraua Crassipes
''Conraua crassipes'' is a species of frog in the family Conrauidae. It is found in eastern Nigeria, Cameroon, Equatorial Guinea (including the island of Bioko), Gabon, the Republic of the Congo, and the Democratic Republic of the Congo. Presumably it also occurs in the southwestern Central African Republic and in the Cabinda Enclave of Angola. Common name Abo slippery frog has been coined for it. ''Conraua crassipes'' is a common species living in or near fast-flowing, clear-water rivers and streams in low altitude rainforest, possibly to elevations up to about above sea level. It tolerates some habitat degradation, provided that trees remain and the habitat does not become too open. It is adversely affected by the loss Loss may refer to: Arts, entertainment, and media Music * ''Loss'' (Bass Communion album) (2006) * ''Loss'' (Mull Historical Society album) (2001) *"Loss", a song by God Is an Astronaut from their self-titled album (2008) * Losses "(Lil Tjay son ... of its f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Fritz Nieden
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] |
Amphibians Of West Africa
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of Nigeria
The wildlife of Nigeria consists of the flora and fauna of this country in West Africa. Nigeria has a wide variety of different habitats, ranging from mangrove swamps and tropical rainforest to savanna with scattered clumps of trees. About 290 species of mammal and 940 species of bird have been recorded in the country. Geography Nigeria is a large country in West Africa just north of the equator. It is bounded by Benin to the west, Niger to the north, Cameroon to the east and the Atlantic Ocean to the south. The country consists of several large plateaus separated by the valleys of the two major rivers, the Niger and the Benue, and their tributaries. These converge inland and flow into the Gulf of Guinea through a network of creeks and branches which form the extensive Niger Delta. Other rivers flow directly to the sea further west, with many smaller rivers being seasonal. The highest mountain is Chappal Waddi () on the Mambilla Plateau in the southeast of the country near the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Cameroon
Amphibians are tetrapod, four-limbed and ectothermic vertebrates of the Class (biology), class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial animal, terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conraua
''Conraua'', known as slippery frogs or giant frogs is a genus of large frogs from sub-Saharan Africa. ''Conraua'' is the only genus in the family Conrauidae. Alternatively, it may be placed in the family Petropedetidae. This genus includes the largest frog of the world, '' Conraua goliath'', which may grow to in snout–vent length and weigh as much as . Four of the seven species in this genus are threatened. Etymology The generic name ''Conraua'' honours Gustav Conrau, a German trader and labour recruiter in Cameroon who was the collector of the holotype of '' Conraua robusta'', the type species of the genus. Species The recognized species are: *''Conraua alleni'' *'' Conraua beccarii'' *'' Conraua crassipes'' *''Conraua derooi'' Hulselmans, 1972 *'' Conraua goliath'' (Boulenger, 1906) – goliath frog *'' Conraua robusta'' Nieden, 1908 – Cameroon slippery frog *'' Conraua sagyimase'' Neira-Salamea, Ofori-Boateng, Kouamé, Blackburn, Segniagbeto, Hillers, Barej, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frogs Of Africa
The fauna of Africa, in its broader sense, is all the animals living in Africa and its surrounding seas and islands. The more characteristic African fauna is found in the Afrotropical realm. Lying almost entirely within the tropics, and equally to north and south of the equator creates favourable conditions for rich wildlife. Africa is home to many of the world's most famous fauna in human culture such as lions‚ rhinos‚ cheetahs‚ giraffes‚ antelope, hippos, leopards, zebras‚ and African elephants among many others. Origins and history of African fauna Whereas the earliest traces of life in fossil record of Africa date back to the earliest times, the formation of African fauna as we know it today, began with the splitting up of the Gondwana supercontinent in the mid-Mesozoic era. After that, four to six faunal assemblages, the so-called African Faunal Strata (AFSs) can be distinguished. The isolation of Africa was broken intermittently by discontinuous "filter routes" tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cross River National Park
The Cross River National Park is a national park of Nigeria, located in Cross River State, Nigeria. There are two separate sections, Okwangwo (established 1991) and Oban (established 1988). The park has a total area of about 4,000 km2, most of which consists of primary moist tropical rainforests in the North and Central parts, with mangrove swamps on the coastal zones. Parts of the park belong to the Guinea-Congolian region, with a closed canopy and scattered emergent treereaching40 or 50 meters in height. The park has one of the oldest rainforests in Africa, and has been identified as a biodiversity hot spot. Sixteeprimate specieshave been recorded in the park. Rare primates include common chimpanzees, drills and (in Okwangwo) Cross River gorillas. Another primate, the gray-cheeked mangabey, seems to have recently become extinct in the area. Both divisions of the park are threatened by illegal logging, slash and burn farming and poaching. Eco-tourism may support effort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Conraua Goliath
The goliath frog (''Conraua goliath''), otherwise known commonly as the giant slippery frog and the goliath bullfrog, is a species of frog in the family Conrauidae. The goliath frog is the largest living frog. Specimens can grow up to in length from snout to vent, and weigh up to . This species has a relatively small habitat range in Cameroon and Equatorial Guinea. Its numbers are dwindling due to habitat destruction and its collection for food and the pet trade. Description Sexual dimorphism between the sexes is minimal. In a sample of 15 individuals, weights ranged between , and snout-vent lengths were between . Their eyes can be nearly in diameter. The conspicuous tympanum has a diameter around and is separated from the eye by about in adults. Goliath frog eggs and tadpoles are about the same size as other frogs despite their very large adult form. A lateral fold extends from the eye to the posterior portion of the tympanum. Toes are fully webbed, with large interdigit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tadpole
A tadpole is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians such as a lateral line, gills and swimming tails. As they undergo metamorphosis, they start to develop functional lungs for breathing air, and the diet of tadpoles changes drastically. A few amphibians, such as some members of the frog family Brevicipitidae, undergo direct development i.e., they do not undergo a free-living larval stage as tadpoles instead emerging from eggs as fully formed "froglet" miniatures of the adult morphology. Some other species hatch into tadpoles underneath the skin of the female adult or are kept in a pouch until after metamorphosis. Having no hard skeletons, it might be expected that tadpole fossils would not exist. However, traces of biofilms have been preserved and fossil tadpoles have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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