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Tomopterna Ahli
''Tomopterna ahli'', commonly known as the Damaraland sand frog or Damara sand frog, is a species of frog in the family Pyxicephalidae. It is found in central to north-western Namibia and southwestern Angola. Description Five adult males in the type series of the formerly recognized ''Tomopterna damarensis'' measure in snout–vent length; the range in a larger sample is . The body is stout. The snout is rounded. The tympanum is round; the supra-tympanic ridge is weakly developed. The fingers have no webbing but the toes are partially webbed. The dorsum is reddish brown with darker brown patches. The eyelids have three darker bars. The shanks and feet are brown with darker patches. The lower surfaces are whitish except for the throat that is darkly pigmented around jaw line. The male advertisement call is a series of notes, emitted at a rate of seven per second. The call has two harmonics that are equally emphasized, one of 1.1–1.2 kHz and the other of 2.4–2.5 k ... [...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] |
Pyxicephalidae
The Pyxicephalidae are a family of frogs currently found in sub-Saharan Africa. However, in the Eocene, the taxon '' Thaumastosaurus'' lived in Europe. Classification The Pyxicephalidae contain two subfamilies, with a total of 12 genera. This family was formerly considered part of the family Ranidae. Family Pyxicephalidae * Subfamily Cacosterninae'' ** Genus '' Amietia'' (16 species) ** Genus '' Anhydrophryne'' (3 species) ** Genus '' Arthroleptella'' (10 species) – moss frogs ** Genus '' Cacosternum'' (16 species) ** Genus '' Microbatrachella'' (monotypic) – micro frog ** Genus '' Natalobatrachus'' (monotypic) ** Genus '' Nothophryne'' (5 species) – mongrel frogs ** Genus '' Poyntonia'' (monotypic) ** Genus '' Strongylopus'' (10 species) ** Genus ''Tomopterna'' (16 species) *Subfamily Pyxicephalinae'' ** Genus '' Aubria'' (2 species) – Masako fishing frog, brown ball frog ** Genus '' Pyxicephalus'' (4 species) – African bull frogs, pixie frog ** Genus '' Thaumastos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Series
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 al ... [...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] |
Dorsum (anatomy)
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axes. The meaning of terms that are used can change depending on whether an organism is bipedal or quadrupedal. Additionally, for some animals such as invertebrates, some terms may not have any meaning at all; for example, an animal that is radially symmetrical will have no anterior surface, but can still have a description that a part is close to the middle ("proximal") or further from the middle ("distal"). International organisations have determined vocabularies that are often used as standard vocabularies for subdisciplines of anatom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Selection In Amphibians
Sex is the biological distinction of an organism between male and female. Sex or SEX may also refer to: Biology and behaviour *Animal sexual behaviour **Copulation (zoology) **Human sexual activity **Non-penetrative sex, or sexual outercourse **Sex drive, a person's overall sexual drive or desire for sexual activity ** Sexual intercourse, also called copulation or coitus *Gender, the distinction between male and female or masculinity and femininity within an individual's gender identity **Sex and gender distinction *Human sexuality *Mating types, a distinction of gametes, whether in anisogamous or isogamous species * Sexing, the act of discerning the sex of an animal *Sexual reproduction, a process of combining and mixing genetic traits, associated with the generation of new individuals, by means of meiosis and fertilization ** Genetic recombination, the process of mixing genetic traits solely, occurring both in organisms with sexual or asexual reproduction Art and entertainment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tomopterna Tandyi
Tandy's sand frog (''Tomopterna tandyi'') is a species of frog in the family Pyxicephalidae. It is found in South Africa, Botswana, Namibia, and south-western Angola, and from inland Tanzania and Kenya. It probably occurs more widely within and between these two disjunct areas. The specific name ''tandyi'' honours Robert Mills Tandy, an American biologist, herpetologist, and photographer and the collector of the type material. Systematics This species is a tetraploid that probably originated as a hybrid between ''Tomopterna cryptotis'' and ''Tomopterna delalandii''. It is not possible to distinguish it morphologically from these two species, and many distributional records do not separate between ''T. tandyi'' and ''T. cryptotis''. Description The holotype, an adult male, measures in snout–vent length. The tympanum is visible. The fingers have no webbing whereas the toes are partially webbed. The dorsum has patches of grey or olive on lighter background. The dorsal warts are ... [...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] |
Data Deficient
A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily indicate that the species has not been extensively studied; but it does indicate that little or no information is available on the abundance and distribution of the species. The IUCN recommends that care be taken to avoid classing species as "data deficient" when the absence of records may indicate dangerously low abundance: "If the range of a taxon is suspected to be relatively circumscribed, if a considerable period of time has elapsed since the last record of the taxon, threatened status may well be justified""The Categories," in IUCN (1983). (see also precautionary principle). See also * IUCN Red List data deficient species * List of data deficient amphibians * IUCN Red List data deficient species (Annelida) * List of data deficien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iona National Park
Iona National Park (Portuguese: ) is the largest national park in Angola. It is situated in the Southwestern corner of the country, in Namibe Province. It is roughly bound by the Atlantic Ocean to the West, an escarpment to the East that marks the beginning of the interior plateau, the Curoca River to the North, and the Cunene River to the South. It is about south of the city of Namibe and covers sq. miles. The topography of Iona is characterised by shifting dunes, vast plains, and rough mountains and cliffs. Annual average precipitation is no more than 30 mm. The Curoca River is intermittent but has lagoons, while the Cunene is permanent and has marshy areas at its mouth. Iona was proclaimed as a reserve in 1937 and upgraded to a national park in 1964. However, as is true for most Angolan parks, the Angolan Civil War greatly disrupted the area. Poaching and the destruction of infrastructure have caused considerable damage to the once rich park. In recent years, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tomopterna
''Tomopterna'' (common names: sand frogs, burrowing frogs, Old World bullfrogs) is a genus of frogs from sub-Saharan Africa. Species The following species are recognised in the genus ''Tomopterna'': * '' Tomopterna ahli'' (Deckert, 1938) * '' Tomopterna branchi'' Wilson and Channing, 2019 * '' Tomopterna cryptotis'' (Boulenger, 1907) — common sand frog * ''Tomopterna delalandii'' (Tschudi, 1838) — Delalande's sand frog * '' Tomopterna elegans'' (Calabresi, 1927) * '' Tomopterna gallmanni'' Wasonga & Channing, 2013Wasonga, D.V. & Channing, A. (2013). "Identification of sand frogs (Anura: Pyxicephalidae: ''Tomopterna'') from Kenya with the description of two new species." ''Zootaxa'' 3734 (2):221–240. * '' Tomopterna kachowskii'' Nikolskii, 1900Zimkus, B.M. & Larson, J.G. (2011). "Examination of the molecular relationships of sand frogs (Anura: Pyxicephalidae: ''Tomopterna'') and resurrection of two species from the Horn of Africa." ''Zootaxa'' 2933: 27-45. * ''Tomopterna ... [...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] |
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