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Nothophryne Unilurio
''Nothophryne unilurio'' is a species of frog in the family Pyxicephalidae described in 2018. It is endemic to Taratibu Nills in northern Mozambique Mozambique (), officially the Republic of Mozambique ( pt, Moçambique or , ; ny, Mozambiki; sw, Msumbiji; ts, Muzambhiki), is a country located in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi .... The Specific name (zoology), specific name ''unilurio'' is derived from Lúrio University, or Unilúrio, the name of a Mozambican university responsible for the research that culminated with the finding of the new species. Description The type series consists of two adult males that measure in snout–urostyle length. ''N. unilurio'' can be distinguished from other ''Nothophryne'' species by the following characteristics: absence of a median lingual process on the dorsal surface of the tongue, Tympanum (anatomy), tympanum clearly visible (obscured in ''Nothophryne baylissi''). Its ... [...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 '' Thaumastosaurus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAG1
Recombination activating gene 1 also known as RAG-1 is a protein that in humans is encoded by the ''RAG1'' gene. The RAG1 and RAG2 genes are largely conserved in humans. 55.99% and 55.98% of the encoded amino acids contain no reported variants, respectively. Function The protein encoded by this gene is involved in antibody and T-cell receptor V(D)J recombination. RAG-1 is involved in recognition of the DNA substrate, but stable binding and cleavage activity also requires RAG-2. The RAG-1/2 complex recognizes recombination signal sequences (RSSs) that flank the V, D and J regions in the genes that encode the heavy and light chains of antibodies and components of T-cell receptors. The complex binds to the RSSs and nicks the DNA. This leads to the removal of the intervening DNA and the eventual ligation of the V, D and J sequences. Defects in this gene can cause several different diseases. Clinical significance Because of these effects, Rag1 deletion is used in mouse m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Mozambique
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 de ... [...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] |
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 tadpol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quirimbas National Park
The Quirimbas National Park (QNP) is a protected area in the Cabo Delgado Province of Mozambique, encompassing the southern part of the Quirimbas Islands, as well as a significant mainland area. The mainland region of Taratibua contain various inselbergs. Location The park was established in June 2002. It stretches for along the northeast coast of Mozambique, and contains the southernmost 11 of the Quirimbas islands. The park has a tropical climate with a rainy season from December to April and a drier but cooler season from May to September. Daytime temperatures vary from around to depending on the time of year. Water temperatures are from to . Accommodations for tourists range from basic beach-front cottages to luxurious villas. Islands include Ibo Island, Mefunvo Island, Matemo Island, Quirimba Island, Quisiva island, Quilálea Island, Sencar Island and Rolas Island. Ecology The park protects of coastal forest, mangroves and coral reefs. The region was isolated fo ... [...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 almos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabo Delgado Province
Cabo Delgado is the northernmost province of Mozambique. It has an area of and a population of 2,320,261 (2017). As well as bordering Mtwara Region in the neighboring country of Tanzania, it borders the provinces of Nampula and Niassa. The region is an ethnic stronghold of the Makonde tribe, with the Makua and Mwani as leading ethnic minorities. Pemba is the capital of the province; other important cities include Montepuez and Mocímboa da Praia. History The province shares its name with Cape Delgado ( pt, Cabo Delgado), a coastal headland on the border between Mozambique and Tanzania, which forms the northernmost point in Mozambique. On 25 September 1964, FRELIMO guerrillas arrived from Tanzania and, with help from some individuals of the surrounding population, attacked a Portuguese administrative post in the province. This raid marked the beginning of the Mozambican War of Independence, part of the Portuguese Colonial War, the former of which was an armed st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inselberg
An inselberg or monadnock () is an isolated rock hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain. In Southern Africa a similar formation of granite is known as a koppie, an Afrikaans word ("little head") from the Dutch diminutive word ''kopje''. If the inselberg is dome-shaped and formed from granite or gneiss, it can also be called a bornhardt, though not all bornhardts are inselbergs. An inselberg results when a body of rock resistant to erosion, such as granite, occurring within a body of softer rocks, is exposed by differential erosion and lowering of the surrounding landscape. Etymology Inselberg The word ''inselberg'' is a loan word from German, and means "island mountain". The term was coined in 1900 by geologist Wilhelm Bornhardt (1864–1946) to describe the abundance of such features found in eastern Africa. At that time, the term applied only to arid landscape features. However, it has s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allopatric
Allopatric speciation () – also referred to as geographic speciation, vicariant speciation, or its earlier name the dumbbell model – is a mode of speciation that occurs when biological populations become geographically isolated from each other to an extent that prevents or interferes with gene flow. Various geographic changes can arise such as the movement of continents, and the formation of mountains, islands, bodies of water, or glaciers. Human activity such as agriculture or developments can also change the distribution of species populations. These factors can substantially alter a region's geography, resulting in the separation of a species population into isolated subpopulations. The vicariant populations then undergo genetic changes as they become subjected to different selective pressures, experience genetic drift, and accumulate different mutations in the separated populations' gene pools. The barriers prevent the exchange of genetic information between th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitochondrial DNA
Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell; most of the DNA can be found in the cell nucleus and, in plants and algae, also in plastids such as chloroplasts. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that the human mtDNA includes 16,569 base pairs and encodes 13 proteins. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It also permits an examination of the relatedness of populations, and so has become important in anthropology and biogeography. Origin Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being deri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have been described previously or are related. In order for species to be validly described, they need to follow guidelines established over time. Zoological naming requires adherence to the ICZN code, plants, the ICN, viruses ICTV, and so on. The species description often contains photographs or other illustrations of type material along with a note on where they are deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million species have been identified and described, out of some 8.7 million that may actually exist. Millions more have become extinct throughout the existence of life on Earth. Naming process A name of a new species becomes valid (available in zo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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