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Amietophrynus Regularis
''Sclerophrys regularis'', commonly known as the African common toad, square-marked toad, African toad, Egyptian toad, African bouncing toad (due to the bouncing motion) and Reuss's toad, is a species of toad in the family Bufonidae. It is found widely in the Subsaharan Africa, with its range extending to the oases in Algeria and Libya as well as to northern Nilotic Egypt. Specifically, it is found in Angola, Benin, Burkina Faso, Cameroon, Cape Verde, Central African Republic, Chad, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Egypt, Ethiopia, Gabon, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Mali, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, Sudan, and Uganda. Description The African common toad is a large sturdy toad with a warty skin. Males grow to a snout-to-vent length of and females reach . The paratoid glands are large and either parallel or kidney-shaped and the male has a single vocal sac under the chin. The dorsal surface is dark olive-br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolph Reuss
Adolph Reuss (November 28, 1804 in Frankfurt am Main – May 7, 1878) was a German-American physician and zoologist, known for his work in the fields of herpetology and arachnology. He studied at the University of Göttingen, earning his medical doctorate in 1825. Following graduation, he served as a doctor in Frankfurt, also becoming involved with zoological research at the Senckenberg Museum. He later emigrated to the United States, where in 1834, he purchased a 200 acre farm near Shiloh, Illinois. In rural Illinois, he worked as a farmer, and in meantime, maintained a successful medical practice. At the time of his death, his estate had grown in size to 450 acres of land. Since 1829, he was a member of the ''Senckenbergische Naturforschende Gesellschaft'', and in September 1856, he became a corresponding member of the Academy of Sciences of St. Louis. While serving at the Senckenberg Museum in Frankfurt, he edited a collection of manuscripts in the field of arachnology th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toad
Toad is a common name for certain frogs, especially of the family Bufonidae, that are characterized by dry, leathery skin, short legs, and large bumps covering the parotoid glands. A distinction between frogs and toads is not made in scientific taxonomy, but is common in popular culture (folk taxonomy), in which toads are associated with drier, rougher skin and more terrestrial habitats. List of toad families In scientific taxonomy, toads include the true toads (Bufonidae) and various other terrestrial or warty-skinned frogs. Non-bufonid "toads" can be found in the families: * Bombinatoridae ( fire-bellied toads and jungle toads) * Calyptocephalellidae (helmeted water toad and false toads) * Discoglossidae ( midwife toads) * Myobatrachidae (Australian toadlets) * Pelobatidae (European spadefoot toad) * Rhinophrynidae ( burrowing toads) * Scaphiopodidae (American spadefoot toads) * Microhylidae ( narrowmouth toads) Biology Usually the largest of the bumps on the skin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bufonidae
{{Cat main, Toad This category contains both species commonly called toads, and the true toads from the family Bufonidae {{Cat main, Toad This category contains both species commonly called toads, and the true toads from the family Bufonidae {{Cat main, Toad This category Category, plural categories, may refer to: Philosophy and general uses *Categorization, cat .... Animals by common name Frogs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsaharan Africa
Sub-Saharan Africa is, geographically, the area and regions of the continent of Africa that lies south of the Sahara. These include West Africa, East Africa, Central Africa, and Southern Africa. Geopolitically, in addition to the African countries and territories that are situated fully in that specified region, the term may also include polities that only have part of their territory located in that region, per the definition of the United Nations (UN). This is considered a non-standardized geographical region with the number of countries included varying from 46 to 48 depending on the organization describing the region (e.g. UN, WHO, World Bank, etc.). The African Union uses a different regional breakdown, recognizing all 55 member states on the continent - grouping them into 5 distinct and standard regions. The term serves as a grouping counterpart to North Africa, which is instead grouped with the definition of MENA (i.e. Middle East–North Africa) as it is part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paratoid Gland
The parotoid gland (alternatively, paratoid gland) is an external skin gland on the back, neck, and shoulder of toads and some frogs and salamanders. It can secrete a number of milky alkaloid substances (depending on the species) known collectively as bufotoxins, which act as neurotoxins to deter predation. These cutaneous glands are called parotoid as they are somewhat similarly positioned to mammalian parotid gland, although the latter have a different function, excreting saliva within the mouth rather than externally excreted defensive chemicals. A study of the parotoid glands of the Colorado River toad in 1976 found that the parotoid glands were "composed of numerous lobules", each of which is a separate unit with a lumen surrounded by a double cell layer. The cell layers have interlocking microvilli. The study found that the outer cell layer resembled smooth muscle cells, with some organelles hypothesised to "function in some aspects of venom synthesis, active cellular trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savanna
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. According to '' Britannica'', there exists four savanna forms; ''savanna woodland'' where trees and shrubs form a light canopy, ''tree savanna'' with scattered trees and shrubs, ''shrub savanna'' with distributed shrubs, and ''grass savanna'' where trees and shrubs are mostly nonexistent.Smith, Jeremy M.B.. "savanna". Encyclopedia Britannica, 5 Sep. 2016, https://www.britannica.com/science/savanna/Environment. Accessed 17 September 2022. Savannas maintain an open canopy despite a high tree density. It is often believed that savannas feature widely spaced, scattered trees. However, in many savannas, tree densities are higher and trees are more regularly spaced than in for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amietophrynus Garmani
''Sclerophrys garmani'', also known as Garman's toad or eastern olive toad (among others), is a species of toad in the family Bufonidae. It is widely distributed in East and Southern Africa. However, populations north and south of Tanzania might represent distinct species. If so, the name ''Sclerophrys garmani'' would apply to populations from northeastern Africa. Furthermore, its southern boundary towards the range of '' Sclerophrys poweri'' in South Africa is also unclear. Etymology The specific name ''garmani'' honors Samuel Garman, an American ichthyologist and herpetologist. Description Males grow to and females to in snout–vent length. The tympanum is almost as big as the eye diameter. The parotoid glands are large. The back is tan to olive-brown and bears large paired markings edged with black. A thin vertebral stripe may be present. Dorsal skin has distinct warts that bear small, black spines. The ventrum is off-white. The male advertisement call is a loud, low-pit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amietophrynus Xeros
The subdesert toad (''Amietophrynus xeros'') is a species of toad in the family Bufonidae. It is found in Algeria, Cameroon, Chad, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Kenya, Libya, Mali, Mauritania, Niger, Senegal, Somalia, Sudan, Tanzania, Uganda, Western Sahara, possibly Angola, possibly Benin, possibly Burkina Faso, possibly Central African Republic, possibly Democratic Republic of the Congo, possibly Guinea-Bissau, and possibly Nigeria. Its natural habitats are dry savanna, subtropical or tropical dry shrubland, subtropical or tropical dry lowland grassland, intermittent rivers, intermittent freshwater marshes, freshwater springs, hot deserts, and arable land. Its conservation status is assessed by the International Union for Conservation of Nature as being of "least concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Least Concern
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. They do not qualify as threatened, near threatened, or (before 2001) conservation dependent. Species cannot be assigned the "Least Concern" category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution or population status. Evaluation Since 2001 the category has had the abbreviation "LC", following the IUCN 2001 Categories & Criteria (version 3.1). Before 2001 "least concern" was a subcategory of the "Lower Risk" category and assigned the code "LR/lc" or lc. Around 20% of least concern taxa (3261 of 15636) in the IUCN database still use the code "LR/lc", which indicates they have not been re-evaluate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sclerophrys
''Sclerophrys'' is a genus of "true toads", family Bufonidae, native to Africa and the southern Arabian Peninsula. Originally, all of these species were classified in the genus ''Bufo''. The genus, originally named ''Amietophrynus'', was split due to large enough taxonomic divergence. Ohler and Dubois showed in 2016 that ''Sclerophrys capensis'' Tschudi, 1838 is the same species as '' Bufo regularis rangeri'' Hewitt, 1935, the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ... of ''Amietophrynus''. Because the former name is older, the implication is that ''Amietophrynus'' is a junior synonym of ''Sclerophrys''. Species The following species are recognized in the genus ''Sclerophrys''. References Amphibian genera Amphibians of Africa Amphibians of Asia Ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Described In 1933
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] |
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