Silverstone's Poison Frog
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Silverstone's Poison Frog
Silverstone's poison frog (''Ameerega silverstonei'';Grant, T. et al., (2006). Phylogenetic systematics of dart-poison frogs and their relatives (Amphibia: Athesphatanura: Dendrobatidae)' (PDF). Bulletin of the American Museum of Natural History, 299, 1–262 formerly ''Epipedobates silverstonei'') is a species of frog in the family Dendrobatidae endemic to Peru. Its natural habitats are subtropical or tropical moist lowland forests and rivers. Description Silverstone's poison frog is a large Dendrobatid frog with males growing to a snout–vent length of about and females to . The head has a rounded sloping snout and is as wide as the body. Males have a small vocal sac in the throat. The skin of the head, fore limbs and underparts is smooth while that of the dorsal surface and hind limbs is granular. The fingers are flattened and have expanded discs at their tips. There is no webbing between the digits of either hands or feet. The head and back of this frog is orange-red, so ...
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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 ...
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Tarapoto
Tarapoto is a commercial hub town in the San Martín Province of the Department of San Martín of northern Peru. It is an hour by plane from Lima, in the high jungle plateau to the east of what is known as the ''selva baja'' (low jungle). Although Moyobamba is the capital of the region, Tarapoto is the region's largest city and is linked to the Upper Amazon and the historic city of Yurimaguas by a relatively well-maintained transandean highway, paved in 2008–9. Tarapoto is approximately above sea level on the high jungle plateau, also called the cloud forest. It was founded in 1782 by Baltasar Jaime Martínez Compañón. According to the 2017 census Tarapoto has a population of 180,073 within the city limits, and over 200,000 inhabitants including the outlying Morales and Banda de Shilcayo districts, which makes it the most populated city in the department and the third largest and most populated Amazonian city after Pucallpa and Iquitos, Tarapoto is older than these cities, ...
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Endemic Fauna Of Peru
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 South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ... 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. ''Enidae, Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a Invasive species, non-indig ...
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Amphibians Described In 1979
Amphibians are four-limbed and ectothermic vertebrate Vertebrates () comprise all animal taxa within the subphylum Vertebrata () ( chordates with backbones), including all mammals, birds, reptiles, amphibians, and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, ...s of the Class (biology), class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial animal, 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 simi ...
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Amphibians Of Peru
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 ...
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Ameerega
''Ameerega'' is a genus of poison dart frogs in the family Dendrobatidae. These frogs live around rocks that are nearby streams. They are found in central South America north to Panama. It contains many former species of the genus ''Epipedobates''. Species The following species are recognised in the genus ''Ameerega'': References

Ameerega, Poison dart frogs Amphibians of Central America Amphibians of South America Amphibian genera {{Dendrobatidae-stub ...
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Metamorphosis
Metamorphosis is a biological process by which an animal physically develops including birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. Some insects, fish, amphibians, mollusks, crustaceans, cnidarians, echinoderms, and tunicates undergo metamorphosis, which is often accompanied by a change of nutrition source or behavior. Animals can be divided into species that undergo complete metamorphosis (" holometaboly"), incomplete metamorphosis ("hemimetaboly"), or no metamorphosis (" ametaboly"). Scientific usage of the term is technically precise, and it is not applied to general aspects of cell growth, including rapid growth spurts. Generally organisms with a larva stage undergo metamorphosis, and during metamorphosis the organism loses larval characteristics. References to "metamorphosis" in mammals are imprecise and only colloquial, but historically idealist ideas of transformation ...
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Huánuco Department
Huánuco (; qu, Wanuku) is a city in central Peru. It had a population of 196,627 as of 2017 and in 2015 it had a population of 175,068. It is the capital of the Huánuco Region and the Huánuco District. It is the seat of the diocese of Huánuco. The metropolitan city of Huanuco is 170,000 hab (2011, urban pop, INEI). It has three districts, Huanuco (head), Amarilis, and Pillco Marca. In this city, the Higueras river meets the Huallaga river, one of the largest rivers in the country. History The city of Huánuco was founded by Spanish conquistador Gómez de Alvarado in 1539, in the Inca town of Yarowilca. In 1541, the city was moved to its current location in the Pillco Valley. Geography Climate Huánuco has a mild semi-arid climate ( Köppen ''BSh''). The temperatures are pleasant throughout the year with very warm days and comfortable nights due to its elevation of . Education Schools *C.S. Colegio de Ciencias * CNA UNHEVAL * G.U.E. Leoncio Prado *C.S. San Luis Go ...
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Dendrobatidae
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 (biology), family Dendrobatidae which are native to tropical Central and South America. These species are Diurnality, diurnal and often have brightly colored bodies. This bright coloration is correlated with the toxicity of the species, making them Aposematism, aposematic. Some species of the family Dendrobatidae exhibit extremely bright coloration along with high toxicity, while others have Crypsis, cryptic coloration with minimal to no amount of observed toxicity. The species that have great toxicity derive this feature from their diet of ants, mites and termites. However, other species that exhibit cryptic coloration, and low to no amounts of toxicity, eat a much larger variety of prey. Many species of this family are Threatened species, threatened due to human infrastructure encroaching on their habitats. These amphibians ...
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Cordillera Azul National Park
Cordillera Azul National Park () is a protected area in Peru. It protects part of the Ucayali moist forests ecoregion. History In 1963, the Biavo-Cordillera Azul National Forest was established, spanning 2,178,000 hectares. In 1997, this area is declared as a forest for timber production, leaving it open to logging operations. However, in 1999, Red Ambiental Peruana (an alliance of several NGOs) and COPRI (the authority for rights for timber exploitation) conduct research in the area and agree to protect the northern part of the forest due to its high biodiversity. In 2000, the Cordillera Azul Reserved Zone is established on the mountainous part of the national forest, and a team from the Field Museum begins an assessment of the biodiversity in the area. Based on such assessment, the Peruvian Ministry of Agriculture recommends the area is protected as a national park. The Cordillera Azul National Park was established in 2001 during the tenure of president Valentín Paniagua. ...
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Snout–vent Length
Snout–vent length (SVL) is a morphometric measurement taken in herpetology from the tip of the snout to the most posterior opening of the cloacal slit (vent)."direct line distance from tip of snout to posterior margin of vent" It is the most common measurement taken in herpetology, being used for all amphibians, lepidosaurs, and crocodilians (for turtles, carapace length (CL) and plastral length (PL) are used instead). The SVL differs depending on whether the animal is struggling or relaxed (if alive), or various other factors if it is a preserved specimen. For fossils, an osteological correlate Osteological correlates are marks on the bones of animals that are made from the causal interactions of the soft-tissue Soft tissue is all the tissue in the body that is not hardened by the processes of ossification or calcification such as bo ... such as precaudal length must be used. When combined with weight and body condition, SVL can help deduce age and sex. Advantages Bec ...
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