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Hyperolius Occidentalis
''Hyperolius occidentalis'' is a species of frog in the family Hyperoliidae. Its common name is western reed frog. It is found in the coastal lowlands of westernmost West Africa in Senegal, the Gambia, Guinea-Bissau, Guinea, and Sierra Leone. Description Males measure and females in snout–vent length. The dorsum is green and may have a darker hourglass pattern. The toes and thighs are reddish. The pupils are horizontal. The toes and fingers have circummarginal disks. The male advertisement call is a double or triple "click". In the Bissagos Islands, the species was found in vegetation about half a meter above the ground, mostly on leaf surfaces or twigs of shrubs. During the heat of the day, they may assume a characteristic resting position to reduce water loss. ''Hyperolius occidentalis'' is very similar to '' Hyperolius picturatus'' and the two might even be the same species, perhaps with ''H. occidentalis'' being a western subspecies of ''H. picturatus''. Habitat and ... [...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] |
Hyperolius Picturatus
''Hyperolius picturatus'' is a species of frog in the family Hyperoliidae. It is found in northern and eastern Sierra Leone, southern Guinea, Liberia, Ivory Coast, and Ghana; its range might extend to Togo. Common names coined for this species are Tanzania reed frog (although it does not occur in Tanzania) and variable montane sedge frog. Taxonomy ''Hyperolius picturatus'' is a very variable species. It might be composed of two cryptic species that occur in sympatry; the eastern form might be conspecific with ''Hyperolius baumanni'' and the western one with ''Hyperolius occidentalis'', possibly representing subspecies. Description Males measure and females in snout–vent length. Males have an hourglass pattern and/or broad dorsolateral stripes. Females have a uniform dorsum and often broad, light dorsolateral stripes and dark flanks. The pupil is horizontal. The male advertisement call consists of an initial sound followed by a series of clicks. Habitat and conservation ''H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Described In 1967
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of West Africa
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperolius
''Hyperolius'' (commonly known as the African reed frogs or reed frogs) is a large genus of frogs in the family Hyperoliidae from Sub-Saharan 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 List of sov .... Species Different sources may delimit species differently, and as new species are still being described, different number of species can be found. As of early 2022, ''Amphibian Species of the World'' lists 145 species and ''AmphibiaWeb'' 152 species. The following list follows the ''Amphibian Species of the World'': Nomina inquirenda The following species are considered '' nomina inquirenda'' (species of doubtful identity): * ''Rappia granulata'' Tornier, 1896 * ''Rappia fimbriata'' Tornier, 1896 * '' Hyperolius laticeps'' Ahl, 1931 * '' Hyperolius thoracotuberculatus'' Ahl, 1931 R ... [...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] |
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] |
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] |
Gallery Forest
A gallery forest is one formed as a corridor along rivers or wetlands, projecting into landscapes that are otherwise only sparsely treed such as savannas, grasslands, or deserts. The gallery forest maintains a more temperate microclimate above the river. Defined as long and narrow forest vegetation associated with rivers, gallery forests are structurally and floristically heterogeneous. The habitats of these forests differ from the surrounding landscapes because they are, for example, more nutrient-rich or moister and/or there is less chance of fires. The forests are sometimes only a few meters wide, because they depend on the water they lie along. Ecology characteristics The riparian zones in which they grow offer greater protection from fire which would kill tree seedlings. In addition, the alluvial soils of the gallery habitat are often of higher fertility and have better drainage than the soils of the surrounding landscape with a more reliable water supply at depth. As a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bissagos Islands
The Bissagos Islands, also spelled Bijagós ( pt, Arquipélago dos Bijagós), are a group of about 88 islands and islets located in the Atlantic Ocean off the coast of Guinea-Bissau. The archipelago was formed from the ancient delta of the Geba and Grande de Buba rivers and spans an area of . 20 of its islands are populated year-round, including the most populated island, Bubaque, where the administrative capital is situated. There is a high diversity of ecosystems: mangroves with intertidal zones, palm forests, dry and semi-dry forests, secondary and degraded forests, coastal savanna, sand banks and aquatic zones. The archipelago was declared a UNESCO Biosphere Reserve in 1996. Demographics The population is estimated at about 30,000 (2006) and the ethnic group Bissago ( pt, Bijagó) predominates. It has a relatively youthful population due to high birth rates and low life expectancy. Economy The economy is largely rural, with many families living from subsistence farming a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperoliidae
The Hyperoliidae, or sedge frogs and bush frogs, are a large family of small to medium-sized, brightly colored frogs which contains more than 250 species in 19 genera. Seventeen genera are native to sub-Saharan Africa. In addition, the monotypic genus ''Tachycnemis'' occurs on the Seychelles Islands, and the genus ''Heterixalus'' (currently 10 species) is endemic to Madagascar. Hyperoliids range from in body length. Many species have smooth, brightly patterned skin that almost looks enameled. Most hyperoliids are arboreal, but some are terrestrial, including several ''Kassina'' species that move by walking or running rather than hopping. Diets vary widely, with examples including ''Paracassina'', which specializes on snails, and ''Afrixalus fornasini'', the only terrestrial frog known to prey on eggs of other species of anurans. Breeding in this family begins at the start of the rainy season, where hyperoliids congregate at breeding sites. Most hyperoliids lay their eggs in w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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