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Engystomops Puyango
''Engystomops'' is a genus of frogs in the family Leptodactylidae. They are known commonly as foam frogs or túngara frogs, though the latter name most commonly refers to ''Engystomops pustulosus''. They are native to the Americas from southern Mexico south to the Amazon Basin. This genus was maintained on its own until 1970, when it was merged into ''Physalaemus'', a genus of similar frogs. As studies progressed, there was increasing evidence that ''Physalaemus'' was not a monophyletic group; it was made up of several groups. One of those groups consisted of several frogs more closely related to each other than to the rest of the ''Physalaemus'', and they were represented by ''P. pustulosus'', now ''Engystomops pustulosus''. This group was split off in 2005 on the basis of characters such as basic morphology and vocalizations, as well as allozyme and other genetic analysis. The group was given the revalidated name ''Engystomops''. It included two newly described species. Descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engystomops Petersi
''Engystomops petersi'' (common name: Peters' dwarf frog) is a species of frog in the family Leptodactylidae. It is found in Amazonian Colombia, Ecuador, and Peru. It is morphologically similar to its sibling species, '' Engystomops freibergi'', and for a period the latter was considered to be a junior synonym of ''Engystomops petersi''. Taxonomy and classification of this species is constantly changing due to the continual evolution of behavioral isolation and rapid speciation in the region. There are also records from the Guianas that have not yet been allocated to either species. Divergence of these two species seems to have been driven by behavioural isolation related to male call characteristics more than geographic isolation. Taxonomy The genus ''Engystomops'' is part of the family Leptodactylid. Previously, the genus ''Engystomops'' was grouped in with other Amazonian genera like ''Eupemphix'' and ''Physalaemus.'' These names are routinely exchanged making it hard to chara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surfactant
Surfactants are chemical compounds that decrease the surface tension between two liquids, between a gas and a liquid, or interfacial tension between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, or dispersants. The word "surfactant" is a blend of ''surface-active agent'', coined . Agents that increase surface tension are "surface active" in the literal sense but are not called surfactants as their effect is opposite to the common meaning. A common example of surface tension increase is salting out: by adding an inorganic salt to an aqueous solution of a weakly polar substance, the substance will precipitate. The substance may itself be a surfactant – this is one of the reasons why many surfactants are ineffective in sea water. Composition and structure Surfactants are usually organic compounds that are amphiphilic, meaning each molecule contains both a hydrophilic "water-seeking" group (the ''head''), and a hydro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Central America
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] |
Amphibian Genera
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] |
Engystomops
''Engystomops'' is a genus of frogs in the family Leptodactylidae. They are known commonly as foam frogs or túngara frogs, though the latter name most commonly refers to ''Engystomops pustulosus''. They are native to the Americas from southern Mexico south to the Amazon Basin. This genus was maintained on its own until 1970, when it was merged into ''Physalaemus'', a genus of similar frogs. As studies progressed, there was increasing evidence that ''Physalaemus'' was not a monophyletic group; it was made up of several groups. One of those groups consisted of several frogs more closely related to each other than to the rest of the ''Physalaemus'', and they were represented by ''P. pustulosus'', now ''Engystomops pustulosus''. This group was split off in 2005 on the basis of characters such as basic morphology and vocalizations, as well as allozyme and other genetic analysis. The group was given the revalidated name ''Engystomops''. It included two newly described species. Descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptic Species Complex
In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each other, further blurring any distinctions. Terms that are sometimes used synonymously but have more precise meanings are cryptic species for two or more species hidden under one species name, sibling species for two (or more) species that are each other's closest relative, and species flock for a group of closely related species that live in the same habitat. As informal taxonomic ranks, species group, species aggregate, macrospecies, and superspecies are also in use. Two or more taxa that were once considered conspecific (of the same species) may later be subdivided into infraspecific taxa (taxa within a species, such as bacterial strains or plant varieties Variety may refer to: Arts and entertainment Entertainment formats * Variety ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engystomops Randi
''Engystomops randi'' is a species of frog in the family Leptodactylidae. It is endemic to western Ecuador. It inhabits lowland deciduous and semi-deciduous forest and evergreen Costa forest. It also inhabits open man-made habitats, such as pastures, near buildings, and agricultural lands (flooded rice fields, banana plantations). Breeding takes place in small pools during the rainy season. The species makes a floating foam nest. References randi Randi is both a given name, and a nickname in the English language, popular in North America and Norway. It is primarily a feminine name, although there is recorded usage of the name by men. It may have originated as a pet form of '' Miranda'' o ... Amphibians of Ecuador Endemic fauna of Ecuador Taxonomy articles created by Polbot Amphibians described in 2004 {{Leptodactylidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engystomops Puyango
''Engystomops'' is a genus of frogs in the family Leptodactylidae. They are known commonly as foam frogs or túngara frogs, though the latter name most commonly refers to ''Engystomops pustulosus''. They are native to the Americas from southern Mexico south to the Amazon Basin. This genus was maintained on its own until 1970, when it was merged into ''Physalaemus'', a genus of similar frogs. As studies progressed, there was increasing evidence that ''Physalaemus'' was not a monophyletic group; it was made up of several groups. One of those groups consisted of several frogs more closely related to each other than to the rest of the ''Physalaemus'', and they were represented by ''P. pustulosus'', now ''Engystomops pustulosus''. This group was split off in 2005 on the basis of characters such as basic morphology and vocalizations, as well as allozyme and other genetic analysis. The group was given the revalidated name ''Engystomops''. It included two newly described species. Descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engystomops Pustulosus
''Engystomops'' is a genus of frogs in the family Leptodactylidae. They are known commonly as foam frogs or túngara frogs, though the latter name most commonly refers to ''Engystomops pustulosus''. They are native to the Americas from southern Mexico south to the Amazon Basin. This genus was maintained on its own until 1970, when it was merged into ''Physalaemus'', a genus of similar frogs. As studies progressed, there was increasing evidence that ''Physalaemus'' was not a monophyletic group; it was made up of several groups. One of those groups consisted of several frogs more closely related to each other than to the rest of the ''Physalaemus'', and they were represented by ''P. pustulosus'', now ''Engystomops pustulosus''. This group was split off in 2005 on the basis of characters such as basic morphology and vocalizations, as well as allozyme and other genetic analysis. The group was given the revalidated name ''Engystomops''. It included two newly described species. Descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engystomops Pustulatus
''Engystomops pustulatus'' (common name: Guayaquil dwarf frog) is a species of frog in the family Leptodactylidae. It is known with certainty from western Ecuador, whereas the status of Peruvian records is ambiguous as they may refer to an undescribed species or possibly ''Engystomops puyango''. Nevertheless, given that ''E. pustulatus'' is now known from Huaquillas in southern Ecuador, near the Peruvian border, it is likely to be found in Peru too. Description Adult males measure and adult females in snout–vent length. The snout is rounded. The tympanum is visible and round. Maxillary and premaxillary teeth are present. The fingers have no webbing nor expanded discs. The dorsum is strongly tubercular, with enlarged and somewhat elongated tubercles forming a "ʌ" pattern in the scapular region. The belly is smooth. There is an elongated row of glands on the flank. Habitat and ecology ''Engystomops pustulatus'' inhabits scrub savanna, Pacific tropical forests, and equatori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engystomops Montubio
''Engystomops montubio'' is a species of frog in the family Leptodactylidae. It is endemic to western Ecuador. It inhabits lowland evergreen and semi-deciduous forest and lowland dry shrub. It also inhabits open man-made habitats, such as pastures, near buildings, etc. Breeding takes place in pools during the rainy season. References montubio Montubio is the term used to describe the mestizo people of the countryside of coastal Ecuador. The Montubio make up 7.4% of the country's population and were recognized as a distinct ethnicity by the government in the spring of 2001 after prot ... Amphibians of Ecuador Endemic fauna of Ecuador Taxonomy articles created by Polbot Amphibians described in 2004 {{Leptodactylidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engystomops Guayaco
''Engystomops guayaco'' is a species of frog in the family Leptodactylidae. It is endemic to Ecuador. Its natural habitats are subtropical or tropical dry forests, intermittent freshwater marshes, and irrigated land. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References Guayaco Amphibians of Ecuador Endemic fauna of Ecuador Taxonomy articles created by Polbot Amphibians described in 2005 {{Leptodactylidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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