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Excidobates
''Excidobates'' is a genus of poison dart frogs endemic to the Marañón River The Marañón River (, , ) is the principal or mainstem source of the Amazon River, arising about 160 km (100 miles) to the northeast of Lima, Peru, and flowing northwest across plateaus 3,650 m (12,000 feet) high, it runs through a deeply ero ... drainage in Peru and Ecuador, South America. At one time members of this genus were classified as '' Dendrobates''. A characteristic of this genus is the presence of pale, ovoid spots on the under surface of the thighs. Poison frogs, Dendrobates.org Species The following species are included in the genus:References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Excidobates Captivus
''Excidobates captivus'', the Santiago poison frog or Rio Santiago poison frog, is a species of frog in the family Dendrobatidae. It is endemic to northwestern Peru and southern Ecuador. Its natural habitat is tropical moist lowland forests. This frog is black with rows of orange-red spots on its back and yellow spots underneath. Description With an adult snout–vent length of , ''Excidobates captivus'' is a very small species of poison frog. It is black with orange-red splotches arranged in a row down either side of the back. It also has small yellow spots above the armpit and groin and further pale yellow spots beneath the chin and scattered on the chest and belly and under the thighs. The first finger of the forelimb is considerably shorter than the second finger. Distribution ''Excidobates captivus'' was first collected in 1929 from the south side of the Marañón River near its confluence with the Santiago River in northwestern Peru, a wet lowland site at an elevation of ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Excidobates Mysteriosus
''Excidobates'' is a genus of poison dart frogs endemic to the Marañón River The Marañón River (, , ) is the principal or mainstem source of the Amazon River, arising about 160 km (100 miles) to the northeast of Lima, Peru, and flowing northwest across plateaus 3,650 m (12,000 feet) high, it runs through a deeply ero ... drainage in Peru and Ecuador, South America. At one time members of this genus were classified as '' Dendrobates''. A characteristic of this genus is the presence of pale, ovoid spots on the under surface of the thighs. Poison frogs, Dendrobates.org Species The following species are included in the genus:References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Excidobates Condor
''Excidobates condor'', the Cóndor poison frog, is a species of frog in the family Dendrobatidae. It is endemic to Ecuador. Description The adult male frog measures about 18.5–20.6 mm in snout-vent length and one adult female frog measured 21.6 mm. The skin of the frog's dorsum and ventral areas is black in color. The adult male frog's head is red in color from the upper mouth to the eyes. The female frog's head is uniform black. The front legs are orange-brown in color above the elbow, most intensely at the feet. The bottoms of the front feet are orange in color. The bottoms of the back feet are black in color. The iris of the eye is black in color. Etymology Scientists named this frog ''condor'' for the area in which it lives: la Cordillera del Condor (Condor Range). Habitat This largely arboreal frog lives in montane cloud forests, both primary and secondary. It is found at the bases of trees with bromeliad plants growing nearby, between 1770 and 2130 meters a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poison Dart Frog
Poison dart frog (also known as dart-poison frog, poison frog or formerly known as poison arrow frog) is the common name of a group of frogs in the family Dendrobatidae which are native to tropical Central and South America. These species are diurnal and often have brightly colored bodies. This bright coloration is correlated with the toxicity of the species, making them aposematic. Some species of the family Dendrobatidae exhibit extremely bright coloration along with high toxicity — a feature derived from their diet of ants, mites and termites— while species which eat a much larger variety of prey have cryptic coloration with minimal to no amount of observed toxicity. Many species of this family are threatened due to human infrastructure encroaching on their habitats. These amphibians are often called "dart frogs" due to the aboriginal South Americans' use of their toxic secretions to poison the tips of blowdarts. However, out of over 170 species, only four have b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrobates
''Dendrobates'' is a genus of poison dart frogs native to Central and South America. It once contained numerous species, but most originally placed in this genus have been split off into other genera such as '' Adelphobates'', '' Ameerega'', '' Andinobates'', '' Epipedobates'', '' Excidobates'', '' Oophaga'', '' Phyllobates'' and '' Ranitomeya'' (essentially all the brightly marked poison dart frogs; i.e. excluding the duller genera in the family like '' Colostethus'' and '' Hyloxalus''), leaving only five large to medium-sized species in the genus ''Dendrobates''. All the other genera used to be grouped in with ''Dendrobates'' because it was previously thought that all brightly colored poison dart frogs came from the same ancestor but this has since been proven to be incorrect. ''Dendrobates'' and ''Phyllobates'' evolved conspicuous coloration from the same common ancestor but not the same as any of the other genera listed above. There is accumulating evidence that ''Dendrobat ... [...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] |
Endemic
Endemism is the state of a species being found only 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 also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marañón River
The Marañón River (, , ) is the principal or mainstem source of the Amazon River, arising about 160 km (100 miles) to the northeast of Lima, Peru, and flowing northwest across plateaus 3,650 m (12,000 feet) high, it runs through a deeply eroded Andean valley, along the eastern base of the Cordillera of the Andes, as far as 5° 36′ southern latitude; from where it makes a great bend to the northeast, and cuts through the jungle Ande in its midcourse, until at the Pongo de Manseriche it flows into the flat Amazon basin. Although historically, the term "Marañón River" often was applied to the river all the way to the Atlantic Ocean, nowadays the Marañón River is generally thought to end at the confluence with the Ucayali River, after which most cartographers label the ensuing waterway the Amazon River. As the Marañón passes through high jungle in its midcourse, it is marked by a series of unnavigable rapids and falls. The Marañón was the subject of a landmark legal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of South America
Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods, but excluding the amniotes (tetrapods with an amniotic membrane, such as modern reptiles, birds and mammals). All extant (living) amphibians belong to the monophyletic subclass Lissamphibia, with three living orders: Anura (frogs and toads), Urodela (salamanders), and Gymnophiona (caecilians). Evolved to be mostly semiaquatic, amphibians have adapted to inhabit a wide variety of habitats, with most species living in freshwater, wetland or terrestrial ecosystems (such as riparian woodland, fossorial and even arboreal habitats). Their life cycle typically starts out as aquatic larvae with gills known as tadpoles, but some species have developed behavioural adaptations to bypass this. Young amphibians generally undergo metamorphosis from an aquatic larval form with gills to an air-breathing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
