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Phrynobatrachus Stewartae
''Phrynobatrachus stewartae'', also known as the Stewart's puddle frog or Stewart's river frog, is a species of frog in the family Phrynobatrachidae. It is found in northern Malawi and south-central and western Tanzania. The Specific name (zoology), specific name ''stewartae'' honours Margaret Stewart (herpetologist), Margaret M. Stewart, an American herpetologist who wrote "Amphibians of Malawi" (1967) and collected the type series, originally identified as ''Phrynobatrachus gutturosus''. Description Males can grow to and females to in snout–vent length. The finger and toe tips are not expanded into discs. The toes are broadly webbed. The Femur, femoral glands are elongated and flattened, and conspicuous yellow in males. Males have a baggy vocal sac with a clear posterior flap. The upper and lower jaws are barred. The Gular skin, gular region is greyish in males but speckled in females. Habitat and conservation ''Phrynobatrachus stewartae'' occurs in marshy areas in dry fore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald George Broadley
Donald George Broadley (1932–2016) was an African herpetologist. He described as new to science 115 species and subspecies, and 8 genera and subgenera of reptiles. He was one of the founders of the Herpetological Association of Africa (initially the Herpetological Association of Rhodesia). He earned his doctorate at the University of Natal The University of Natal was a university in the former South African province Natal which later became KwaZulu-Natal. The University of Natal no longer exists as a distinct legal entity, as it was incorporated into the University of KwaZulu-N ... in 1966.Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . ("Broadley", p. 39). His widow, Sheila Broadley, is also a herpetologist. Legacy Broadley is commemorated in the scientific names of eight species of reptiles: '' Afroedura broadleyi'', '' Atheris broadleyi'', '' Elapsoidea broadleyi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gular Skin
Gular skin (throat skin), in ornithology, is an area of featherless skin on birds that joins the lower mandible of the beak (or ''bill'') to the bird's neck. Other vertebrate taxa may have a comparable anatomical structure that is referred to as either a gular sac, throat sac, vocal sac or gular fold. In birds Gular skin can be very prominent, for example in members of the order Phalacrocoraciformes as well as in pelicans (which likely share a common ancestor). In many species, the gular skin forms a flap, or gular pouch, which is generally used to store fish and other prey while hunting. In cormorants, the gular skin is often colored, contrasting with the otherwise plain black or black-and-white appearance of the bird. This presumably serves some function in social signalling, since the colors become more pronounced in breeding adults. In frigatebirds, the gular skin (or gular sac or throat sac) is used dramatically. During courtship display, the male forces air into the sac, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Donald George Broadley
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 Tanzania
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 decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Malawi
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 decline ... [...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] |
Type Locality (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nyika National Park
Nyika National Park is Malawi’s largest national park, with an area of 3200 km2 (1250 mile2). Location and road access The park covers practically the whole of the Nyika Plateau in northern Malawi, about 480 km north of Lilongwe and 60 km north of Rumphi by road. Access is by a single dirt road which branches north off the road from Rumphi to the Katumbi border post, and winds its way up the south-western scarp of the plateau, continues over the top, where it forms the border with Zambia, then descends the north-west scarp in a series of bends, and continues north to the Chisenga border post. On the top of the plateau, a spur goes east to Chelinda, the headquarters of the park nearer the centre. Although the park boundary comes within 35 km of Livingstonia there is no access from the eastern side. Features The name ''Nyika'' means "where the water comes from" as the plateau's elevation makes it wetter than surrounding areas. Other suggested meanings are "wilderness" and " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Katavi National Park
Katavi National Park is a Tanzanian national park created in 1974 and is located in Katavi Region, Tanzania. It is a very remote park that is less frequently visited than other Tanzanian national parks. The park is approximately in area, which makes it the third largest national park in Tanzania. The park encompasses the Katuma River and the seasonal Lake Katavi and Lake Chada floodplains. Wildlife Wildlife features include large animal herds, particularly of Cape Buffaloes, zebras, giraffes, and elephants, plus along the Katuma river, crocodiles and hippopotami which upon annual dry seasons results in mudholes that can be packed with hundreds of hippos. Carnivorous animals that roam this park are cheetahs, wild dogs, hyenas, leopards, and lions. Some sources claim a very high biodiversity in the park, although there are also reports of wildlife decline due to illegal hunting and poaching, presumably 'bushmeat' sustenance. Katavi has fewer human visitors and jeeps conducting ... [...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] |
Vocal Sac
The vocal sac is the flexible membrane of skin possessed by most male frogs and toads. The purpose of the vocal sac is usually as an amplification of their mating or advertisement call. The presence or development of the vocal sac is one way of externally determining the sex of a frog or toad in many species; taking frogs as an example; The vocal sac is open to the mouth cavity of the frog, with two slits on either side of the tongue. To call, the frog inflates its lungs and shuts its nose and mouth. Air is then expelled from the lungs, through the larynx, and into the vocal sac. The vibrations of the larynx emits a sound, which resonates on the elastic membrane of the vocal sac. The resonance causes the sound to be amplified and allows the call to carry further. Muscles within the body wall force the air back and forth between the lungs and vocal sac. Development The development of the vocal sac is different in most species, however they mostly follow the same process. The d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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