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Phrynobatrachus Njiomock
''Phrynobatrachus njiomock'' is a species of frogs in the family Phrynobatrachidae. It is endemic to Cameroon and is only known from Mount Oku where it occurs near Lake Oku. It has not been observed after 2010 and might already be extinct. The specific name ''njiomock'' means "eleventh" in Oku language and refers to the name "''Phrynobatrachus'' sp. 11" that used in 1978 to refer to a specimen collected near Lake Oku. Common name Lake Oku puddle frog has been proposed for this species. Description Adult males measure and adult females in snout–vent length. The body shape is compact and the hind limbs are strong. The tympanum is indistinct or only scarcely visible. Fingers lack webbing and have small but distinct discs. Toes are moderately to extensively webbed and have small discs. Dorsal coloration varies from greyish brown to dark brown. Coloration may appear uniform but typically includes some lighter and darker spots, often with reddish spots on head and limbs. Some ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Oku
Lake Oku is a crater lake on the Bamenda Plateau in the Northwest Region of Cameroon. It is located at on Mount Oku, and is completely surrounded by cloud forest. The lake lies in an explosion crater formed in the last phase of development of the Oku Massif, a large volcanic field with a diameter of about . Mount Oku is a stratovolcano that rises to . The lake is the subject of many myths among the local people. The lake is the only known habitat of the Lake Oku Clawed Frog. The surrounding Kilum-Ijim Forest is a nature reserve, set up by BirdLife International, and home to many rare species. See also * Lake Barombi Koto * Lake Barombi Mbo * Lake Bermin * Lake Dissoni * Lake Ejagham References {{reflist, 1, refs= {{cite journal , editor-last=Doherty-Bone , editor-first=Thomas , date=2014 , title=A Working Conservation Action Plan for Lake Oku , url=https://www.researchgate.net/publication/269104431 , doi=10.13140/2.1.4988.5760 , accessdate=2018-10-31, last1=Doherty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nocturnality
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 d ... [...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] |
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] |
Phrynobatrachus
''Phrynobatrachus'' is a genus of Sub-Saharan frogs that form the monogeneric family Phrynobatrachidae. Their common name is puddle frogs, dwarf puddle frogs, African puddle frogs, or African river frogs. The common name, puddle frog, refers to the fact that many species breed in temporary waterbodies such as puddles. ''Phrynobatrachus'' are among the most common amphibians in Africa. They are typically small (mostly less than ), fast-moving frogs. They occupy a variety of habitats from dry savannas to rainforests. Most species deposit many small eggs as a surface clutch in standing or slowly moving water and have exotrophic tadpoles. Taxonomy Phrynobatrachidae has earlier been considered as a subfamily of Ranidae, but its recognition as a family is now well-established. It is probably most closely related to Petropedetidae and Pyxicephalidae or Ptychadenidae. This large genus may be further divided into three major clades. These clades could be treated as different genera, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kilum-Ijim Forest
The Kilum-Ijim Forest is an area of mountain rainforest in Cameroon's North-West Region. It is found on Mount Oku and the nearby Ijim Ridge in the Cameroon mountains, with Lake Oku lying in a crater in its center. It is the largest area of Afromontane forest left in West Africa. The area is an important one for biodiversity, including the endemic Bannerman's turaco Bannerman's turaco (''Tauraco bannermani'') is a species of bird in the family Musophagidae. It is endemic to Cameroon. In French it is known as ''touraco de Bannerman'' or ''touraco doré''. Its scientific and common names honour the ornitholo ... and banded wattle-eye. The forest is the focus of a successful community conservation project, the Kilum-Ijim Forest Project, which works to protect the forest. The project is a collaboration between the Cameroon Ministry of the Environment and BirdLife International, and focuses on sustainable use of the forests, local management, working to benefit both the biodive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chytridiomycosis
Chytridiomycosis ( ) is an infectious disease in amphibians, caused by the chytrid fungi ''Batrachochytrium dendrobatidis'' and ''Batrachochytrium salamandrivorans''. Chytridiomycosis has been linked to dramatic population declines or extinctions of amphibian species in western North America, Central America, South America, eastern Australia, east Africa (Tanzania), and Dominica and Montserrat in the Caribbean. Much of the New World is also at risk of the disease arriving within the coming years. The fungus is capable of causing sporadic deaths in some amphibian populations and 100% mortality in others. No effective measure is known for control of the disease in wild populations. Various clinical signs are seen by individuals affected by the disease. A number of options are possible for controlling this disease-causing fungus, though none has proved to be feasible on a large scale. The disease has been proposed as a contributing factor to a global decline in amphibian populat ... [...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] |
Above Sea Level
Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as ''orthometric heights''. The combination of unit of measurement and the physical quantity (height) is called "metres above mean sea level" in the metric system, while in United States customary and imperial units it would be called "feet above mean sea level". Mean sea levels are affected by climate change and other factors and change over time. For this and other reasons, recorded measurements of elevation above sea level at a reference time in history might differ from the actual elevation of a given location over sea level at a given moment. Uses Metres above sea level is the standard measurement of the elevation or altitude of: * Geographic locations such as towns, mountains and other landmarks. * The top of buildings and other structures. * Flying objects such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frog
A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-frog" ''Triadobatrachus'' is known from the Early Triassic of Madagascar, but molecular clock, molecular clock dating suggests their split from other amphibians may extend further back to the Permian, 265 Myr, million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest concentration of species diversity is in tropical rainforest. Frogs account for around 88% of extant amphibian species. They are also one of the five most diverse vertebrate orders. Warty frog species tend to be called toads, but the distinction between frogs and toads is informal, not from Taxonomy (biology), taxonomy or evolutionary history. An adult frog has a stout body, protruding eyes, anteriorly-attached tongue, limb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tympanum (anatomy)
The tympanum is an external hearing structure in animals such as mammals, birds, some reptiles, some amphibians and some insects. Using sound, vertebrates and many insects are capable of sensing their prey, identifying and locating their predators, warning other individuals, and locating potential mates and rivals by hearing the intentional or unintentional sounds they make. In general, any animal that reacts to sounds or communicates by means of sound, needs to have an auditory mechanism. This typically consists of a membrane capable of vibration known as the tympanum, an air-filled chamber and sensory organs to detect the auditory stimuli. Anurans In frogs and toads, the tympanum is a large external oval shape membrane made up of nonglandular skin. It is located just behind the eye. It does not process sound waves; it simply transmits them to the inner parts of the amphibian's ear, which is protected from the entry of water and other foreign objects. A frog's ear drum works ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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