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Duellmanohyla Chamulae
The Chamula mountain brook frog (''Duellmanohyla chamulae'') is a species of frog in the family Hylidae endemic to Chiapas, Mexico. Its natural habitats are moist montane forests. It is threatened by habitat destruction and has been rated as " endangered" by the IUCN. Distribution and habitat The Chamula mountain brook frog is known only from the northern side of the Central Highlands of Chiapas in the state of Chiapas, Mexico. All known localities are between Jitotol and Soluschiapa. It inhabits the moist cloud forests at altitudes of over . Ecology Frogs in the genus ''Duellmanohyla'' breed in fast-flowing mountain streams. To adapt to this habitat, the frogs have a moderate degree of webbing on the forefeet and on some digits of the hind-feet. Egg-laying has not been observed in this and other species in the genus, and it is thought that the females may deposit their eggs on the foliage above the water of swift-flowing mountain streams, the tadpoles then falling in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duellmanohyla Chamulae
The Chamula mountain brook frog (''Duellmanohyla chamulae'') is a species of frog in the family Hylidae endemic to Chiapas, Mexico. Its natural habitats are moist montane forests. It is threatened by habitat destruction and has been rated as " endangered" by the IUCN. Distribution and habitat The Chamula mountain brook frog is known only from the northern side of the Central Highlands of Chiapas in the state of Chiapas, Mexico. All known localities are between Jitotol and Soluschiapa. It inhabits the moist cloud forests at altitudes of over . Ecology Frogs in the genus ''Duellmanohyla'' breed in fast-flowing mountain streams. To adapt to this habitat, the frogs have a moderate degree of webbing on the forefeet and on some digits of the hind-feet. Egg-laying has not been observed in this and other species in the genus, and it is thought that the females may deposit their eggs on the foliage above the water of swift-flowing mountain streams, the tadpoles then falling in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By William Edward Duellman
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Described In 1961
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] |
Endemic Amphibians Of Mexico
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 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. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duellmanohyla
''Duellmanohyla'' is a genus of frogs (mountain brook frogs) in the family Hylidae found in Oaxaca, Mexico, as well as Central America. These are small stream-breeding frogs have bright red, bronze or yellow irises. Their Dorsum (anatomy), dorsa are uniform pale green, olive, red-brown or lichenose, with green or olive spots on a black background. Several species have pale upper labial and lateral stripes. Some fingers or toes have moderate webbing. Description ''Duellmanohyla'' are small or moderately small frogs. The Dorsum (anatomy), dorsum is uniformly pale green, olive, reddish brown, or lichenose, and bears green or olive spots on a black background. The Iris (anatomy), iris is bright red, orange, or yellow. The fingers and toes are moderately webbed. Ecology ''Duellmanohyla'' breed in fast-flowing mountain streams. To adapt to this habitat, the frogs have a moderate degree of webbing on the forefeet and on some digits of the hind-feet. Egg-laying has not been observed in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chytridiomycosis
Chytridiomycosis ( ) is an infectious disease in amphibians, caused by the chytrid fungi ''Batrachochytrium dendrobatidis'' and ''Batrachochytrium salamandrivorans''. Chytridiomycosis has been linked to dramatic population declines or extinctions of amphibian species in western North America, Central America, South America, eastern Australia, east Africa (Tanzania), and Dominica and Montserrat in the Caribbean. Much of the New World is also at risk of the disease arriving within the coming years. The fungus is capable of causing sporadic deaths in some amphibian populations and 100% mortality in others. No effective measure is known for control of the disease in wild populations. Various clinical signs are seen by individuals affected by the disease. A number of options are possible for controlling this disease-causing fungus, though none has proved to be feasible on a large scale. The disease has been proposed as a contributing factor to a global decline in amphibian populat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cloud Forest
A cloud forest, also called a water forest, primas forest, or tropical montane cloud forest (TMCF), is a generally tropical or subtropical, evergreen, montane, moist forest characterized by a persistent, frequent or seasonal low-level cloud cover, usually at the canopy level, formally described in the ''International Cloud Atlas'' (2017) as silvagenitus. Cloud forests often exhibit an abundance of mosses covering the ground and vegetation, in which case they are also referred to as mossy forests. Mossy forests usually develop on the saddles of mountains, where moisture introduced by settling clouds is more effectively retained. Cloud forests are among the most biodiversity rich ecosystems in the world with a large amount of species directly or indirectly depending on them. Other moss forests include black spruce/feathermoss climax forest, with a moderately dense canopy and a forest floor of feathermosses including ''Hylocomium splendens'', ''Pleurozium schreberi'' and ''Ptil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Substrate (biology)
In biology, a substrate is the surface on which an organism (such as a plant, fungus, or animal) lives. A substrate can include biotic or abiotic materials and animals. For example, encrusting algae that lives on a rock (its substrate) can be itself a substrate for an animal that lives on top of the algae. Inert substrates are used as growing support materials in the hydroponic cultivation of plants. In biology substrates are often activated by the nanoscopic process of substrate presentation. In agriculture and horticulture * Cellulose substrate * Expanded clay aggregate (LECA) * Rock wool * Potting soil * Soil In animal biotechnology Requirements for animal cell and tissue culture Requirements for animal cell and tissue culture are the same as described for plant cell, tissue and organ culture (In Vitro Culture Techniques: The Biotechnological Principles). Desirable requirements are (i) air conditioning of a room, (ii) hot room with temperature recorder, (iii) microscope r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tadpole
A tadpole is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians such as a lateral line, gills and swimming tails. As they undergo metamorphosis, they start to develop functional lungs for breathing air, and the diet of tadpoles changes drastically. A few amphibians, such as some members of the frog family Brevicipitidae, undergo direct development i.e., they do not undergo a free-living larval stage as tadpoles instead emerging from eggs as fully formed "froglet" miniatures of the adult morphology. Some other species hatch into tadpoles underneath the skin of the female adult or are kept in a pouch until after metamorphosis. Having no hard skeletons, it might be expected that tadpole fossils would not exist. However, traces of biofilms have been preserved and fossil tadpoles have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiapas Montane Forests
The Chiapas montane forests is a tropical moist broadleaf forest ecoregion in southern Mexico and extending into western Guatemala. It includes the montane tropical forests on the northern and northeastern slopes of the Chiapas Highlands. Geography The Chiapas montane forests lie on the northern and northeastern slopes of the Chiapas highlands, between the lowland Petén–Veracruz moist forests to the north and east and the Central American pine–oak forests in the higher mountains to the south. Climate The climate of the ecoregion is tropical and humid. The forests have a cooler climate than the adjacent lowlands, and average annual temperatures decrease with elevation. Flora The predominant plant community is mountain cloud forest. Characteristic tree species include majagua ('' Trichospermum mexicanum''), American sweetgum (''Liquidambar styraciflua'') and alder (''Alnus'' sp). There are approximately 98,050 hectares of primary forest, and 272,991 hectares of second-gro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jitotol
Jitotol is a town and one of the 119 Municipalities of Chiapas, in southern Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema .... As of 2010, the municipality had a total population of 18,683, up from 13,076 as of 2005. It covers an area of 203.7 km². As of 2010, the town of Jitotol had a population of 4,427. Other than the town of Jitotol, the municipality had 63 localities, the largest of which (with 2010 populations in parentheses) were: Carmen Zacatal (2,579), Las Maravillas (2,105), Cálido (1,189), and El Ámbar (1,157), classified as rural. References Municipalities of Chiapas {{Chiapas-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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