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Pelophylax
''Pelophylax'' is a genus of true frogs widespread in Eurasia, with a few species ranging into northern Africa. This genus was erected by Leopold Fitzinger in 1843 to accommodate the green frogs of the Old World, which he considered distinct from the brown pond frogs of Carl Linnaeus' genus '' Rana''. They are also known as water frogs, as they spend much of the summer living in aquatic habitat; the pond frogs can be found more often, by comparison, on dry land, as long as there is sufficient humidity. Yet there are species of Eurasian green frogs – the Central Asian '' P. terentievi'', or the Sahara frog (''P. saharicus'') – which inhabit waterholes in the desert. Systematics and taxonomy Most authors throughout the 19th and 20th century disagreed with Fitzinger's assessment. The green frogs were included again with the brown frogs, in line with the tendency to place any frog similar in habitus to the common frog (''R. temporaria'') in ''Rana''. That ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marsh Frog
The marsh frog (''Pelophylax ridibundus'') is a species of water frog native to Europe and parts of western Asia. Description The marsh frog is the largest type of frog in most of its range, with males growing to a size around 100 mm (3.9 in) SVL and females slightly larger (4 in) SVL. There is a large variation in colour and pattern, ranging from dark green to brown or grey, sometimes with some lighter green lines; a lighter line on the back is generally present. The frog will usually be darker coloured in early spring to absorb heat more efficiently. Tadpoles can reach up to 190 mm (7.3 in) in length, but this usually occurs in places with long winters where the tadpole has time to grow. File:Pelophylax ridibundus3.JPG, Tadpole File:PelophylaxRidibundusSpottedAdult.JPG, Female File:Marsh Frog imported from iNaturalist photo 400377577 on 3 December 2024 (cropped).jpg, Showing vocal sac. Distribution and habitat They occur in a large part of Euro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edible Frog
The edible frog (''Pelophylax'' kl. ''esculentus'') is a hybrid species of common European frog, also known as the common water frog or green frog (however, this latter term is also used for the North American species ''Rana clamitans''). It is used for food, particularly in France as well as Germany and Italy, for the delicacy frog legs. Females are between long, males between . This widespread and common frog has many common names, including European dark-spotted frog, European black-spotted pond frog, and European black-spotted frog. Distribution ''Pelophylax esculentus'' is endemic to Europe. It naturally occurs from the northern half of France to western Russia, and from Estonia and Denmark to Bulgaria and northern Italy. The edible frog is introduced in Spain, Norway and the United Kingdom. The natural range is nearly identical to that of '' P. lessonae''. Hybridogenesis ''Pelophylax'' kl. ''esculentus'' is the fertile hybrid of the pool frog (''Pelophylax lesso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graf's Hybrid Frog
Graf's hybrid frog (''Pelophylax'' kl. ''grafi'') is a hybridogenic species in the true frog family Ranidae. It is found in France and Spain. Its natural habitats are rivers, intermittent rivers, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, arable land, pastureland, and heavily degraded former forest. It is becoming rare due to habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease .... Taxonomy It is a hybrid between Perez's frog and the marsh frog. It is called ''Grenouille de Graf'' in French. Description Graf's hybrid frog is a medium to large frog, with a length of around 12 cm. It is typically green, with dark spots on the back and sometimes a light green band along the center of the back. It c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sahara Frog
The Sahara frog (''Pelophylax saharicus'') is a species of frog in the family Ranidae. It is native to Egypt, Libya, Tunisia, Algeria, Morocco, Spanish North Africa (Ceuta and Melilla), and Western Sahara; it has also been introduced to Gran Canaria. In French it is called ''grenouille verte d'Afrique du Nord'', and in Spanish it is known as ''rana verde norteafricana''. Description The Sahara frog is a large species, an exceptional female from Morocco having a snout-to-vent length of . It is sometimes confused with Perez's frog (''Pelophylax perezi''), and the published description may be partially of that species. The head is as wide as it is long, the snout is oval and the eyes have horizontal pupils. Males have a pair of vocal sacs on the throat. A ridge connects the nostrils and upper eyelids and continues to the groin, separating the back from the flanks. The hind feet are webbed. The colour is variable, being reported as green, brown or mixed, sometimes with darker spo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perez's Frog
The Perez's frog (''Pelophylax perezi''), also known as Iberian waterfrog, Iberian green frog or Coruna frog, is a species of frog in the family Ranidae. It is native to southern France, Portugal, Spain, and has been introduced to the Canary Islands, Canary and Balearic Islands, Madeira, the United Kingdom, and the Azores. In the Iberian Peninsula it is widespread and common. Its natural habitats are temperate forests, temperate shrubland, Mediterranean-type shrubby vegetation, rivers, intermittent rivers, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, sandy shores, arable land, and urban areas. It is not considered threatened by the IUCN. See also * Hybridogenesis in water frogs References Pelophylax Amphibians of Europe Amphibians described in 1885 Taxonomy articles created by Polbot Habitats Directive species {{Ranidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelophylax Terentievi
''Pelophylax terentievi'', commonly known as Terentjev's frog or Central Asian pond frog, is a species of frog in the family Ranidae. It is found in Xinjiang, China and Tajikistan, and possibly in Afghanistan. Its natural habitats are swamps and hot deserts. Its status is insufficiently known. Description ''Pelophylax terentievi'' have complex layers of tubular bones where dark rings are present. Dark rings are due to growth stunts during periods of inadequate nutrition or hibernation Hibernation is a state of minimal activity and metabolic reduction entered by some animal species. Hibernation is a seasonal heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It is mos .... References terentievi Amphibians of China Fauna of Tajikistan Amphibians described in 1992 Taxonomy articles created by Polbot {{Ranidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
True Frog
True frogs is the common name for the frog family (biology), family Ranidae. They have the widest distribution of any frog family. They are abundant throughout most of the world, occurring on all continents except Antarctica. The true frogs are present in North America, northern South America, Europe, Africa (including Madagascar), and Asia. The Asian range extends across the East Indies to New Guinea and a single species, the Australian wood frog (''Hylarana daemelii''), has spread into the far north of Australia. Typically, true frogs are smooth and moist-skinned, with large, powerful legs and extensively webbed feet. The true frogs vary greatly in size, ranging from small—such as the wood frog (''Lithobates sylvatica'')—to large. Many of the true frogs are aquatic or live close to water. Most species lay their eggs in the water and go through a tadpole stage. However, as in most families of frogs, there is large variation of habitat within the family. There are als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raninae
True frogs is the common name for the frog family Ranidae. They have the widest distribution of any frog family. They are abundant throughout most of the world, occurring on all continents except Antarctica. The true frogs are present in North America, northern South America, Europe, Africa (including Madagascar), and Asia. The Asian range extends across the East Indies to New Guinea and a single species, the Australian wood frog (''Hylarana daemelii''), has spread into the far north of Australia. Typically, true frogs are smooth and moist-skinned, with large, powerful legs and extensively webbed feet. The true frogs vary greatly in size, ranging from small—such as the wood frog (''Lithobates sylvatica'')—to large. Many of the true frogs are aquatic or live close to water. Most species lay their eggs in the water and go through a tadpole stage. However, as in most families of frogs, there is large variation of habitat within the family. There are also arboreal specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pond Frog
''Rana'' (derived from Latin ''rana'', meaning 'frog') is a genus of frogs commonly known as the Holarctic true frogs, pond frogs or brown frogs. Members of this genus are found through much of Eurasia and western North America. Many other genera were formerly included here. These true frogs are usually largish species characterized by their slim waists and wrinkled skin; many have thin ridges running along their backs, but they generally lack "warts" as in typical toads. They are excellent jumpers due to their long, slender legs. The typical webbing found on their hind feet allows for easy movement through water. Coloration is mostly greens and browns above, with darker and yellowish spots. Behavior Many frogs in this genus breed in early spring, although subtropical and tropical species may breed throughout the year. Males of most of the species are known to call, but a few species are thought to be voiceless. Females lay eggs in rafts or large, globular clusters, and can pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophyletic
In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent common ancestor (or more precisely an ancestral population), i.e. excludes non-descendants of that common ancestor # the grouping contains all the descendants of that common ancestor, without exception Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic'' grouping meets 1. but not 2., thus consisting of the descendants of a common ancestor, excepting one or more monophyletic subgroups. A '' polyphyletic'' grouping meets neither criterion, and instead serves to characterize convergent relationships of biological features rather than genetic relationships – for example, night-active primates, fruit trees, or aquatic insects. As such, these characteristic features of a polyphyletic grouping ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
