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Callulina Stanleyi
''Callulina stanleyi'' is a species of frogs in the family Brevicipitidae. It was discovered in 2010 during a survey of rainforests in the northern part of the Eastern Arc Mountains of Tanzania. It was named in honour of the American zoologist, William T. Stanley, of the Field Museum, Chicago, who has done much research into the amphibians of Tanzania. It is present at three locations along the eastern border of Chome Forest Reserve at altitudes between . It is rated as " critically endangered" by the International Union for Conservation of Nature. Description Frogs in the genus ''Callulina'' are endemic to the Eastern Arc Mountains of Tanzania. They are characterised by short blunt snouts and plump bodies covered with glandular warts. ''Callulina stanleyi'' has a snout-to-vent length of . The dorsal surface is mainly brown with symmetrical darker brown or black streaks. The body is covered with granulations, and the larger glandular masses are pale tan, as are the underparts. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List Of Threatened Species
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the International Union for Conservation of Nature, IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to International Unio ... [...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] |
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] |
Endemic Fauna Of Tanzania
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Development
Marine larval ecology is the study of the factors influencing dispersing larvae, which many marine invertebrates and fishes have. Marine animals with a larva typically release many larvae into the water column, where the larvae develop before metamorphosing into adults. Marine larvae can disperse over long distances, although determining the actual distance is challenging, because of their size and the lack of a good tracking method. Knowing dispersal distances is important for managing fisheries, effectively designing marine reserves, and controlling invasive species. Theories on the evolution of a biphasic life history Larval dispersal is one of the most important topics in marine ecology, today. Many marine invertebrates and many fishes have a bi-phasic life cycle with a pelagic larva or pelagic eggs that can be transported over long distances, and a demersal or benthic adult. There are several theories behind why these organisms have evolved this biphasic life history: *Larva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callulina Kisiwamsitu
The Mazumbai warty frog (''Callulina kisiwamsitu'') is a species of frogs in the family Brevicipitidae. It is endemic to forests of the West Usambara Mountains of Tanzania where it is threatened by habitat loss. It is part of a species complex and was recognised as a separate species in 2004, having previously been included in '' Callulina kreffti''. Description ''Callulina kisiwamsitu'' is a small species with an adult length of . The females are larger than the males. The skin is densely warted and the colour is a mottling of various shades of brown and black. Distribution and habitat ''Callulina kisiwamsitu'' is endemic to the West Usambara Mountains in Tanzania. Much of this area has been deforested and this species is found in the remains of the forested area around Lushoto including the Mazumbai Forest Reserve, Ambangula Forest Reserve and Shume-Mugambo Forest Reserve. It is found climbing in trees and on the ground in damp forests with thick undergrowth. Biology ''Callul ... [...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] |
Callulina Shengena
''Callulina shengena'' is a species of frogs in the family Brevicipitidae. It was discovered in 2010 during a survey of rainforests in the northern part of the Eastern Arc Mountains of Tanzania. It is present at two locations in Chome Forest Reserve at altitudes between . The forests in which it lives are being selectively felled, and the International Union for Conservation of Nature has rated its conservation status as " critically endangered". Description Frogs in the genus ''Callulina'' are endemic to the Eastern Arc Mountains of Tanzania. They are characterised by short blunt snouts and plump bodies covered with glandular warts. ''Callulina shengena'' is mainly grey with small white tubercles. It is a relatively large species of ''Callulina'', reaching in snout–urostyle length. Distribution and habitat ''Callulina shengena'' is known from only two small locations in the Chome Forest Reserve in the Eastern Arc Mountains of Tanzania. Its typical habitat is humid tropical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callulina Laphami
''Callulina laphami'' is a species of frogs in the family Brevicipitidae. It was discovered in 2010 during a survey of rainforests in the northern part of the Eastern Arc Mountains of Tanzania. It is present at a single location in the Kindoroko and Minja Forest Reserves in the Pare Mountains. The forest area in which this frog lives is a remnant patch of a larger forest with trees in the surrounding area being felled for agricultural development, and the International Union for Conservation of Nature has rated the frog's conservation status as " critically endangered". Description ''Callulina laphami'' is a robust species of brevicipitid frog with a plump body and distinctive ridges of glands on its arms and legs. It has no tympani and no enlarged pads on the tips of its fingers and toes. Males have a snout-to-vent length of while females vary from . This frog's dorsal surface is dark brown, its flanks are tan and its ventral surface yellowish-cream. In most individuals there i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callulina Dawida
''Callulina dawida'', also known as Taita warty frog, is a species of frogs in the family Brevicipitidae. It is endemic to Kenya, where it is only found in severely fragmented montane forests in Taita Hills in the south-eastern part of the country. Originally ''Callulina'' was thought to be monotypic and widely distributed through Eastern Arc Mountains in Tanzania and in southern Kenya. However, within the last decade eight new species have been identified, many which are considered critically endangered by IUCN. ''C. dawida'' was described in 2009 by a team led by Simon Loader; it received its specific name after Dawida language, which is spoken in Taita Hills. Description ''Callulina dawida'' is a medium-sized frog in which females can reach 55 mm and males 35 mm. The toes of the hind feet are arranged in two opposable groups, with the fourth and fifth together, pointing backward when walking on the forest floor. The skin is warty and dorsal adult colour is variabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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