Are newts amphibians?
Newt
Newts, as with salamanders in general and other amphibians, serve as bioindicators because of their thin, sensitive skin and evidence of their presence (or absence) can serve as an indicator of the health of the environment. Most species are highly sensitive to subtle changes in the pH level of the streams and lakes where they live. Because their skin is permeable to water, they absorb oxygen and other substances they need through their skin. Scientists study the stability of the amphibian population when studying the water quality of a particular body of water.
List of dragons in Dragon Booster
The yellow-bellied newt is a tiny harmless reptile which stands about six inches tall. It appears to be a scavenger and seems to be able to live in Dragon City quite well. Humans don't seem to be concerned about them any more than we are concerned about squirrels. These newts are obviously yellow. They have a frog-like face with bulging blue eyes and they have a tail that kind of looks like a fluffy. Newts are first seen in "Faster Than Fear."
Newt
Phylogenetic analyses estimated the origin of the newt subfamily in the Late Cretaceous to Eocene. Several fossil salamanders have also been referred to the Pleurodelinae, including:
Eastern newt
The eastern newt ("Notophthalmus viridescens") is a common newt of eastern North America. It frequents small lakes, ponds, and streams or near-by wet forests. The eastern newt produces tetrodotoxin which makes the species unpalatable to predatory fish and crayfish. It has a lifespan of 12 to 15 years in the wild, and may grow to five inches in length. These animals are common aquarium pets, being either collected from the wild or sold commercially. The striking bright orange juvenile stage, which is land-dwelling, is known as a red eft. Some sources blend the general name of the species and that of the red-spotted newt subspecies into the eastern red-spotted newt (although there is no "western" one).
Tweedy John Todd
Todd began experiments on healing using newts at the British Naval base in Naples, and continued when he moved to Brighton. He conducted a series of experiments on the newts and other animals such as worms to study the processes of healing and regeneration of wounds and amputated body parts. These were the first experiments that proved that nerves have a role in healing, and that amphibian limbs cannot regenerate if the nerves are cut. He observed the healing process microscopically and collaborated with histologist Charles Ager to produce over 3,000 microscope slides to illustrate his findings. These slides are amongst the earliest surviving examples of the use of Canada balsam as a mountant.
Salamandridae
Salamandridae is a family of salamanders consisting of true salamanders and newts. Currently, 74 species (with more expected) have been identified in the Northern Hemisphere - Europe, Asia, the northern tip of Africa, and North America. Salamandrids are distinguished from other salamanders by the lack of rib or costal grooves along the sides of their bodies and by their rough skin. Their skin is very granular because of the number of poison glands. They also lack nasolabial grooves.
Newt
Although some species, such as the rough-skinned newt ("Taricha granulosa") in North America or the smooth newt ("Lissotriton vulgaris") in Europe, are still relatively common, populations of newts throughout their distribution range suffer from habitat loss, fragmentation, and pollution. This affects especially the aquatic breeding sites they depend on, but also their land habitats. Several species, such as the Edough ribbed newt ("Pleurodeles poireti"), Kaiser's spotted newt ("Neurergus kaiseri"), or the Montseny brook newt ("Calotriton arnoldi") are considerered threatened by the IUCN, and the Yunnan lake newt is a tragic example of a newt species that has gone extinct recently.
List of amphibians of Singapore
There are about 30 species of amphibians in Singapore. Amphibians are aquatic vertebrates. They need water to survive. They include frogs, toads, newts, salamanders and caecilians. But Singapore does not have newts and salamanders.
Salamanders in folklore
A newt is a type of salamander, and they are traditionally associated with witchcraft. In William Shakespeare's famous play "Macbeth", the witches use the "eye of newt" as the first ingredient stirred in their cauldron. However, the famous line in "Macbeth" is actually referring to a series of plants. Eye of newt refers to mustard, which reiterates the link between salamanders and fire as mustard seeds are used as a "fiery" spice.
Newt
Newts are threatened by habitat loss, fragmentation and pollution. Several species are endangered, and at least one species, the Yunnan lake newt, has gone extinct recently.
Italian crested newt
Nonylphenol is a large issue for "T. carnifex" because it is a very common toxin found in leakage from sewers into the habitat of the Italian crested newt. Newts are amphibians, and make their habitats in aquatic environments. These environments have been known to sometimes receive the previously discussed sewage leaking. The compounds nonylphenol as well as ethoxylate surfactants can be found in polluted rivers, where the newts reside. The two substances discussed can be transformed, by microorganisms, into compounds which are much more toxic. They are extremely good bioindicators, due to the magnification of these chemicals in the environment demonstrated in the newt. Nonylphenol absorbed through the newts’ skin is especially dangerous because it can result in issues with the reproductive biology as well as cutaneous and osmoregulatory mechanisms.
List of amphibians and reptiles of Olympic National Park
The rough-skinned newt ("Taricha granulosa") is a newt known for its strong poison. Habitats of rough-skinned newts are found throughout the West Coast of the United States and British Columbia. Their range extends south to Santa Cruz, California and north to Alaska.
Italian crested newt
In early stages of development in amphibians, it has been discovered that convectional gas transport, the method through which hemoglobin is carried throughout the body, is an unnecessary process. This is important because it indicates that the coupling of ventilator gas transport and hemoglobin gas transport are independent mechanisms and not yet coupled as they are in adulthood. An example of this difference is seen in the response to hypoxia between organisms at differing developmental stages. In juvenile newts, there is no cardiovascular response in conditions of hypoxia.
Laos knobby newt
Laos knobby newt, Tylototriton notialis, is a species of newt in the family Salamandridae. It is only known from its type locality in the Nakai-Nam Theun Biodiversity Conservation Area, Khammouane Province, central Laos. The type locality is an evergreen mixed deciduous–pine forest; the newts were found in and near a small stream. It is likely that Laos knobby newt will also be found in adjacent areas of Vietnam. Based on molecular genetic data, it belongs to the "Tylototriton asperrimus" group of knobby newts. Laos knobby newt is a small newt, with total length of about .
Iberian ribbed newt
"P. waltl" is more aquatic-dwelling than many other European tailed amphibians. Though they are quite able to walk on land, most rarely leave the water, living usually in ponds, cisterns, and ancient village wells that were common in Portugal and Spain in the past. They prefer cool, quiet, and deep waters, where they feed on insects, worms, and tadpoles.
Taricha
"Taricha" spp. eat a diet largely consisting of invertebrates, though adults will also take fish and amphibian eggs. Most predators associate bright colors with poison (called aposematism), so if attacked, the newt will take up a defensive position, showing off the bright underbelly. Newts of this genus are primarily nocturnal, and may be either fully aquatic or semiaquatic. None are fully terrestrial as they must enter the water to breed. Juvenile newts, which are known as "efts", are primarily terrestrial until they reach sexual maturity.
Albinism
In European Salamandridae, albinism has been recorded in the fire salamander ("Salamandra salamandra"), gold-striped salamander ("Chioglossa lusitanica"), Italian crested newt ("Triturus carnifex"), marbled newt ("Triturus marmoratus"), Iberian ribbed newt ("Pleurodeles waltl"), alpine newt ("Ichthyosaura alpestris") and two sub-species of the smooth newt ("Lissotriton vulgaris vulgaris" and "Lissotriton vulgaris meridionalis").
Coastal Range newt
Their diet consists of small invertebrates such as worms, snails, slugs, insects and insect eggs, and amphibian larvae. They are known to be cannibalistic if other foods are in short supply. Newts capture prey by projecting out their tongue which has an adhesive texture.
Newt
Newts form one of three subfamilies in the family Salamandridae, aside Salamandrinae and Salamandrininae. They comprise most extant species in the family, roughly 100, which are classified in fourteen genera:
List of amphibians and reptiles of Idaho
The rough-skinned newt ("Taricha granulosa") is a newt known for its strong poison. Habitats of rough-skinned newts are found throughout the West Coast of the United States and British Columbia. Their range extends south to Santa Cruz, California and north to Alaska. Rough-skinned newts are rare in Idaho and have only been found in several ponds near Moscow, Idaho where they may have been introduced.
Northern crested newt
The northern crested newt, also known as the great crested newt or warty newt ("Triturus cristatus") is a newt in the family Salamandridae, found across Europe and parts of Asia.
Newt (disambiguation)
A newt is an aquatic animal.
Biodiversity of Wales
There are six native amphibians in Wales. They are the common toad, great crested newt, natterjack toad, palmate newt, smooth newt and common frog.
Newt
Some newt populations in Europe have decreased because of pollution or destruction of their breeding sites and terrestrial habitats, and countries such as the UK have taken steps to halt their declines. In the UK, they are protected under the Wildlife and Countryside Act 1981 and the Habitat Regulations Act 1994. It is illegal to catch, possess, or handle great crested newts without a licence, or to cause them harm or death, or to disturb their habitat in any way. The IUCN Red List categorises the species as ‘lower risk’
Although the other UK species, the smooth newt and palmate newt are not listed, the sale of either species is prohibited under the Wildlife and Countryside Act, 1981.
Hox genes in amphibians and reptiles
Some amphibians and reptiles have the ability to regenerate limbs, eyes, spinal cords, hearts, intestines, and upper and lower jaws. The Japanese fire belly newt can regenerate its eye lens 18 times over a period of 16 years and retain its structural and functional properties. The cells at the site of the injury have the ability to undifferentiate, reproduce rapidly, and differentiate again to create a new limb or organ.
Ctenoglypta newtoni
†Ctenoglypta newtoni was a species of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Euconulidae, the hive snails. This species was endemic to Mauritius. It is now extinct.
Newt fencing
Newt fencing is a barrier designed to control the movement of Great Crested Newts, other amphibians or reptiles. It can also be called drift fencing or temporary amphibian fencing (TAF). It consists of a low fence of plastic sheeting, buried a short way into the ground and supported by lightweight posts usually made of wood or plastic. It is used to keep animals out of working areas, to keep them inside safe areas of their habitat, to intercept migration routes, or to control their movement to help their capture for translocation. It may be used in conjunction with pitfall traps placed at the foot of the fence. It is most commonly used in connection with building projects, to minimise harm to protected species.
Newt
Dialectal English and Scots also has the word "ask" (also "awsk, esk" in Scots) used for both newts and wall lizards, from Old English "āþexe", from Proto-Germanic "*agiþahsijǭ", literally "lizard-badger" or "distaff-like lizard" (compare German "Eidechse" and "Echse", both "lizard"; "*agi-" is ultimately cognate with Greek ὄφις "snake", from Proto-Indo-European "*h₁ogʷʰis"). Latin had the name "stellio" for a type of spotted newt, now used for species of the genus "Stellagama". Ancient Greek had the name κορδύλος, presumably for the water newt (immature newt, eft). German has "Molch", from Middle High German "mol", ":wikt:olm", like the English term of unknown etymology.
List of amphibians of Texas
Family Salamandridae (newts)
Red-tailed knobby newt
The red-tailed knobby newt is a highly toxic newt. They can kill a human that has a weak body or a baby.
The Kweichow Crocodile Newt (T.kweichowensis) is part of the Genus known Tylototriton which consists of 11 known subspecies and possibly even more yet to be named. All Tylototriton are considered highly toxic due to their defense mechanism which is being able to use the tips of its ribs to pierce the insides of the Orange Warts along its sides which secrete the toxin. However they are a fairly docile species so this rarely can happen.
Bosca's newt
Boscá's newt (Lissotriton boscai, formerly "Triturus boscai" ), also known as the Iberian newt, is a species of newt in the family Salamandridae. The species is found in Portugal and western Spain.
Amphibian
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. Modern amphibians are all 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 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 in amphibian populations for many species around the globe.
Triturus
The larvae are themselves eaten by various animals such as carnivorous invertebrates and water birds, and are especially vulnerable to predatory fish. Adults generally avoid predators through their hidden lifestyle but are sometimes eaten by herons and other birds, snakes such as the grass snake, and mammals such as shrews, badgers and hedgehogs. They secrete the poison tetrodotoxin from their skin, albeit much less than for example the North American Pacific newts ("Taricha"). The bright yellow or orange underside of crested newts is a warning coloration which can be presented in case of perceived danger. In such a posture, the newts typically roll up and secrete a milky substance.
Thomas Belt
In this book, he also first described the mutualistic relationship of certain Acacias and the ant we now know as "Pseudomyrmex spinicola". These are a species of red myrmecophyte-inhabiting neotropical ants which are found only in Nicaragua and Costa Rica. They live in the thorns of a tropical tree, "Acacia collinsii", feeding on nectaries along with the protein and lipid-rich pods produced by the plant for the ants and now known as Belsian bodies (or Beltian bodies) in honor of Belt.
Amphibians in human culture
Newts are traditionally associated with witchcraft. In William Shakespeare's play Macbeth, the witches use "eye of newt" as the first ingredient added to their cauldron.
Amniote
Amniotes are tetrapods (descendants of four-limbed and backboned animals) that are characterised by having an egg equipped with an amnion, an adaptation to lay eggs on land rather than in water as the anamniotes (including frogs) typically do. Amniotes include synapsids (mammals along with their extinct kin) and sauropsids (reptiles and birds), as well as their ancestors, back to amphibians. Amniote embryos, whether laid as eggs or carried by the female, are protected and aided by several extensive membranes. In eutherian mammals (such as humans), these membranes include the amniotic sac that surrounds the fetus. These embryonic membranes and the lack of a larval stage distinguish amniotes from tetrapod amphibians.
Italian crested newt
As an aquatic species of newt, "T. carnifex" requires areas of standing water such as ponds, lakes, farmlands, etc., for its habitat. It is very susceptible to slight changes in its environment, and is thus considered an ideal bio-indicator species. The species is thought to be on the decline due to an increase in industrialization and housing development, both of which interfere with the habitat of the newt. The greatest threats to the newt are loss of aquatic habitats (most importantly, breeding sites), agricultural pollution and intensification, and the inclusion of new predatory fish into its habitat. The intrusion of humans not only physically destroy their habitats, but introduces chemicals and pollutants that have lethal effects on amphibian populations at what is normally considered a safe amount. Due to its wide distribution, however, extinction of the species is considered to be of small concern at present, even though the populations have been decreasing.
Marbled newt
Marbled newts live throughout most of France, and northern Spain west to the top third of Portugal. They have a slight overlap with the pygmy marbled newt ("T. pygmaeus"), which take over southern Spain. Marbled newts are absent from most of the Pyrenees because of dry and unstable conditions. In northern France, the populations are more scattered due to the presence of the great crested newt ("T. cristatus"), with which the marbled newt hybridizes to some extent. The higher-elevation Mediterranean climates are the preferred habitat of marbled newts, and in the overlap, "T. pygmaeus" takes the lower elevations.
List of amphibians of Great Britain
This is a list of the amphibians of Great Britain. There are seven amphibian species native to Great Britain, in addition, there are a number of naturalized species. The natives comprise three newts, two toads and two frogs.
Spawn (biology)
Amphibians are found in and around fresh water lakes and ponds, but not in marine environments. Examples are frogs and toads, salamanders, newts and caecilians (which resemble snakes). They are cold-blooded animals that metamorphose from a juvenile water-breathing form, usually to an adult air-breathing form, though mudpuppies retain juvenile gills in adulthood.
Smooth newt
In the UK, the smooth newt is protected under Schedule 5 of the Wildlife and Countryside Act 1981 with respect to sale only. It is therefore illegal to sell individuals of the species, but their destruction or capture is still permitted. They are also listed under Annex III of the Bern Convention.
The smooth newt is the only newt native to Ireland, and it is protected there under the Wildlife Acts (1976 and 2000). It is an offence to capture or kill a newt in Ireland without a licence.
Thomea newtoni
Thomea newtoni is a species of air-breathing land snail, a terrestrial gastropod mollusk in the family Achatinidae. This species is endemic to São Tomé and Príncipe.
Karotomorpha
Karotomorpha is a genus of parasites with a flagellum structure. This organism can infect a variety of higher life forms including a number of amphibians. For example, this genus is known to be a parasite of the rough-skinned newt, a widespread newt in the western USA.
Ziegler's crocodile newt
Ziegler's crocodile newt, Tylototriton ziegleri, is a species of newt in the family Salamandridae. It is so far known from Hà Giang and Cao Bằng provinces in northern Vietnam; there is a photograph to suggest it also occurs in Lào Cai Province. Based on molecular genetic data, Ziegler's crocodile newt belongs to the "Tylototriton asperrimus" group of knobby newts.
Smooth newt
Smooth newts are generalist carnivores with a broad diet including invertebrates, crustaceans, and the eggs and hatchlings of frogs and fish. Therefore, they are likely to prey on and compete for food with a wide range of Australian terrestrial and freshwater species
Danube crested newt
Both in water and on land, the newts are largely nocturnal. In their aquatic habitats, they hide under vegetation, and on land, they use structures such as logs, rocks, or small animal burrows for cover. They feed mainly on different invertebrates, but in the water may also prey on tadpoles and smaller newts. Predators include herons and other birds, snakes such as the grass snake, and various carnivorous mammals.
Cactoblastis cactorum
In South America, "Cactoblastis cactorum" has many natural predators, including ants and New World monkeys. Ants, the moths' main predators, consume its larvae. New World monkeys dig the larvae and pupae out from the flattened leaf-like stems, or "cladodes", of the cacti. The relationship between "Cactoblastis cactorum" and "Opuntia" cactus species is parasitic: the moth feeds on the host cactus. Recent work in South America has identified four genetically-structured ecotypes of "C. cactorum" that infest different hosts and possess different larval morphology. The mechanism driving this isolation and pattern of host-association in the field remains unexplored.
Newt
Many newts produce toxins in their skin secretions as a defence mechanism against predators. "Taricha" newts of western North America are particularly toxic. The rough-skinned newt "Taricha granulosa" of the Pacific Northwest produces more than enough tetrodotoxin to kill an adult human, and some Native Americans of the Pacific Northwest used the toxin to poison their enemies. However, the toxins are only dangerous if ingested, and the newts can easily and safely live in the same ponds or streams as frogs and other amphibians, or be safely kept as pets. The only predators of "Taricha" newts are garter snakes, some having developed a resistance to the toxin. Most newts can be safely handled, provided the toxins they produce are not ingested or allowed to come in contact with mucous membranes or breaks in the skin. After handling, proper hand-washing techniques should be followed due to the risk from the toxins they produce and bacteria they carry, such as "Salmonella". It is, however, illegal to handle or disturb great crested newts in the UK without a licence.
Newt
Newts share many of the characteristics of their salamander kin, Caudata, including semipermeable glandular skin, four equal-sized limbs, and a distinct tail. The newt's skin, however, is not as smooth as that of other salamanders. Aquatic larvae have true teeth on both upper and lower jaws, and external gills. They have the ability to regenerate limbs, eyes, spinal cords, hearts, intestines, and upper and lower jaws. The Japanese fire belly newt can regenerate its eye lens 18 times over a period of 16 years and retain its structural and functional properties. The cells at the site of the injury have the ability to undifferentiate, reproduce rapidly, and differentiate again to create a new limb or organ. One hypothesis is that the undifferentiated cells are related to tumour cells, since chemicals that produce tumours in other animals will produce additional limbs in newts.
Triturus
Habitat protection and management is seen as the most important element for the conservation of "Triturus" newts. This includes preservation of natural water bodies, reduction of fertiliser and pesticide use, control or eradication of introduced predatory fish, and the connection of habitats through sufficiently wide corridors of uncultivated land. A network of aquatic habitats in proximity is important to sustain populations, and the creation of new breeding ponds is in general very effective as they are rapidly colonised when other habitats are nearby. In some cases, entire populations have been moved when threatened by development projects, but such translocations need to be carefully planned to be successful. Strict protection of the northern crested newt in the United Kingdom has created conflicts with local development projects; at the same time, the charismatic crested newts are seen as flagship species, whose conservation also benefits a range of other amphibians.
Amphibian
Amphibians have soft bodies with thin skins, and lack claws, defensive armour, or spines. Nevertheless, they have evolved various defence mechanisms to keep themselves alive. The first line of defence in salamanders and frogs is the mucous secretion that they produce. This keeps their skin moist and makes them slippery and difficult to grip. The secretion is often sticky and distasteful or toxic. Snakes have been observed yawning and gaping when trying to swallow African clawed frogs ("Xenopus laevis"), which gives the frogs an opportunity to escape. Caecilians have been little studied in this respect, but the Cayenne caecilian ("Typhlonectes compressicauda") produces toxic mucus that has killed predatory fish in a feeding experiment in Brazil. In some salamanders, the skin is poisonous. The rough-skinned newt ("Taricha granulosa") from North America and other members of its genus contain the neurotoxin tetrodotoxin (TTX), the most toxic non-protein substance known and almost identical to that produced by pufferfish. Handling the newts does not cause harm, but ingestion of even the most minute amounts of the skin is deadly. In feeding trials, fish, frogs, reptiles, birds and mammals were all found to be susceptible. The only predators with some tolerance to the poison are certain populations of common garter snake ("Thamnophis sirtalis").
In locations where both snake and salamander co-exist, the snakes have developed immunity through genetic changes and they feed on the amphibians with impunity. Coevolution occurs with the newt increasing its toxic capabilities at the same rate as the snake further develops its immunity. Some frogs and toads are toxic, the main poison glands being at the side of the neck and under the warts on the back. These regions are presented to the attacking animal and their secretions may be foul-tasting or cause various physical or neurological symptoms. Altogether, over 200 toxins have been isolated from the limited number of amphibian species that have been investigated.
Redwood National and State Parks
Reptiles and amphibians can also be found in the parks, with the northwestern ringneck snake, northern red-legged frog, Pacific giant salamander, and the rough-skinned newt most commonly seen.
Metamorphosis
In newts, there is no true metamorphosis because newt larvae already feed as predators and continue doing so as adults. Newts' gills are never covered by a gill sac and will be resorbed only just before the animal leaves the water. Just as in tadpoles, their lungs are functional early, but newts use them less frequently than tadpoles. Newts often have an aquatic phase in spring and summer, and a land phase in winter. For adaptation to a water phase, prolactin is the required hormone, and for adaptation to the land phase, thyroxin. External gills do not return in subsequent aquatic phases because these are completely absorbed upon leaving the water for the first time.
Armillaria novae-zelandiae
Fungi in the genus "Armillaria" have a wide host range and can cause disease on a variety of tree species throughout New Zealand; particularly in plantations, home gardens, and parks. According to Hood (1989) the fungus has also been reported in Chile, Argentina, and Australia. There have also been reported epidemics of kiwifruit orchards. "Armillaria novae-zelandiae" occurs in indigenous forests as a decay fungus of dead trees, stumps, and logs. It causes butt rots in living trees as well. Plants at both the seedling and adult stages are susceptible. Infection happens on the roots of the host plant. The hyphae, mycelium, and rhizomorphs of "A. novae-zelandiae" can survive on infected tissues in soil for a long time, and in spring when plants start growing, the pathogen can infect new growing tissue.
STS-65
At least two of the four adult newts died on the voyage. The first newt death was attributed simply to stress. The second dead newt was found by Donald A. Thomas late on Sunday 17 July 1994 while checking the tanks, however the second death was called "peculiar" in a comment by Dr. Michael Wiederhold, a scientist on the ground. At the time it was said it would be difficult to remove the newt from the tank because of weightlessness, but the dead animal could contaminate the tank if left inside. The newts were Japanese Red-bellied Newts ("Cynops pyrrhogaster").
None of the links for these references work.
Fontburn
The presence of four British reptiles; common lizard, adder, slowworm, and grass snake, and five of Britain’s native amphibians; common frog, common toad, smooth newt, palmate newt, and great crested newt mean that this an extremely valuable and important wildlife site. The grass snake records for Fontburn make this one of the most northerly authenticated colonies of this species in Britain.
Italian newt
The Italian newt (Lissotriton italicus) is a species of salamander in the family Salamandridae found only in Italy. Its natural habitats are temperate forests, temperate shrubland, Mediterranean-type shrubby vegetation, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, arable land, pastureland, rural gardens, water storage areas, ponds, and canals and ditches. It is threatened by habitat loss.
It was formerly known as "Triturus italicus", but was relocated to the genus "Lissotriton" after "Triturus" was split.
Amphibian
In newts and salamanders, metamorphosis is less dramatic than in frogs. This is because the larvae are already carnivorous and continue to feed as predators when they are adults so few changes are needed to their digestive systems. Their lungs are functional early, but the larvae do not make as much use of them as do tadpoles. Their gills are never covered by gill sacs and are reabsorbed just before the animals leave the water. Other changes include the reduction in size or loss of tail fins, the closure of gill slits, thickening of the skin, the development of eyelids, and certain changes in dentition and tongue structure. Salamanders are at their most vulnerable at metamorphosis as swimming speeds are reduced and transforming tails are encumbrances on land. Adult salamanders often have an aquatic phase in spring and summer, and a land phase in winter. For adaptation to a water phase, prolactin is the required hormone, and for adaptation to the land phase, thyroxine. External gills do not return in subsequent aquatic phases because these are completely absorbed upon leaving the water for the first time.
Eastern newt
Eastern newts are at home in both coniferous and deciduous forests. They need a moist environment with either a temporary or permanent body of water, and thrive best in a muddy environment. During the eft stage, they may travel far from their original location. Red efts may often be seen in a forest after a rainstorm. Adults prefer a muddy aquatic habitat, but will move to land during a dry spell. Eastern newts have some amount of toxins in their skin, which is brightly colored to act as a warning. Even then, only 2% of larvae make it to the eft stage. Some larvae have been found in the pitchers of the carnivorous plant "Sarracenia purpurea".
Smooth newt
All species of newts are protected in Europe. Laws prohibit the killing, destruction, and the selling of newts. While the species is by no means endangered, IUCN lists insufficient data to make an assessment for two of the subspecies.
Coastal Range newt
Scientists believe these newts may live as long as 20 years or more.
List of amphibians of Great Britain
Great Crested Newt "Triturus cristatus"
Loire
Most amphibians of the Loire are found in the slow flow areas near the delta, especially in the floodplain, marshes and oxbows. They are dominated by the fire salamander ("Salamandra salamandra"), frogs and toads. The toads include "Bufo bufo", "Alytes obstetricans", "Bombina variegata", "Bufo calamita", "Pelobates fuscus" and "Pelobates cultripes". The frogs are represented by the Parsley frog ("Pelodites punctatus"), European tree frog ("Hyla arborea"), Common Frog ("Rana temporaria"), Agile Frog ("R. dalmatina"), Edible Frog ("R. esculenta"), Perez's Frog ("R. perezi"), marsh frog ("R. ridubunda") and Pool Frog ("R. lessonae"). Newts of the Loire include the Marbled Newt ("Triturus marmoratus"), Smooth Newt ("T. vulgaris"), Alpine Newt ("T. alpestris") and Palmate Newt ("T. helveticus").
Josefov Meadows
Among the returned amphibians are frogs and newts, newly appeared are European green toad and European fire-bellied toad.
Megalobatrachonema
Megalobatrachonema is a nematode genus. Species of this genus are parasites of a number of amphibians including the rough-skinned newt".
Italian crested newt
Temperature in amphibians and reptiles directly affects metabolism in an exponential manner, and among ectotherms, temperature is one of the most important factors, acting directly upon metabolism. Since the newt is a poikilotherm, the purpose of this increase in metabolism is not to generate heat to regulate their internal temperature, but to counteract the depressive effect on standard metabolism that low atmospheric temperatures produce. For example, there is a direct correlation between the activity of certain muscle metabolic enzymes and the preferred body temperature of Eastern red spotted newts.
Hemiptera
Most hemipterans feed on plants, using their sucking and piercing mouthparts to extract plant sap. Some are parasitic while others are predators that feed on other insects or small invertebrates. They live in a wide variety of habitats, generally terrestrial, though some species are adapted to life in or on the surface of fresh water. Hemipterans are hemimetabolous, with young nymphs that somewhat resemble adults. Many aphids are capable of parthenogenesis, producing young from unfertilised eggs; this helps them to reproduce extremely rapidly in favourable conditions.
Smooth newt
The smooth newt, also known as the common newt (Lissotriton vulgaris; formerly Triturus vulgaris) is a species of amphibian, the most common newt of the genus "Lissotriton". It is found throughout Europe, except the far north, areas of Southern France and the Iberian Peninsula.
Fire belly newts
The fire belly newts or fire newts are a genus (Cynops) of newts native to Japan and China. All of the species show bright yellow or red bellies, but this feature is not unique to this genus. Their skin contains a toxin that can be harmful if ingested.The genus "Cynops" has been suggested to be due for a split, with the Chinese species being placed in a separate genus from the Japanese ones. The species "Cynops cyanurus" is at the centre of all this. There is much debate about the validity of "C. cyanurus" and "C. chenggongensis". All the known captive animals could be something different from "C. cyanurus", as they do not entirely match the original description of the species. The only known animals that match that are animals originating from Chemnitz Zoo, but the F2 animals have not bred well, which could suggest they are in fact a hybrid of "C. cyanurus" and "C. chenggongensis" or an undescribed "Cynops" species.
Eastern newt
From to in length. Central newts are brown or green in color, with fine black dots all over the body. There may be a row of red spots on each side of the body. The belly is yellow or orange, and is noticeably lighter than the rest of the body. The skin of newts is not as slippery as the skin of salamanders, and may appear to be rough and dry for parts of their lives.
List of herpetofauna of the Czech Republic
Amphibians are tetrapod animals from the class Amphibia comprising toads, frogs, salamanderns, newts and caecilians. They have an amphibious lifestyle, where the larvae are aquatic. Skin is generally soft and with glands. They show three type of respiration through moist skin, buccal cavity and lungs. Caecilians are limbless amphibians, whereas other amphibians have short limbs. Amphibians lay cluster of eggs as egg masses closer to a water body and show an external fertilization.
Pain in amphibians
When an isolated peptide termed "frog's nociception-related peptide" (fNRP) is injected into newts, it increases the latency for newts to flick their tails in response to a hot-beam. The effect is blocked by simultaneous injection of naloxone, thereby indicating evidence for the interaction of fNRP and opioid steps in the analgesia pathways of newts.
Lissotriton
Lissotriton is a genus of newts native to Europe and parts of Asia Minor. As most other newts, they are aquatic as larvae and during breeding time but live in terrestrial, humid habitats over the rest of the season.
Nycteria
Nycteria is a genus of parasitic alveolates of belonging to the phylum Apicomplexia. Its vertebrate hosts are bats. The vectors are not presently known.
Abedus
"Abedus" are sit-and-wait predators that catch small animals, especially invertebrates such as other aquatic insects and snails, but also small vertebrates such as young fish and tadpoles. Small and medium-sized prey items are caught with their strong front legs and stabbed with the proboscis, which injects a saliva that both incapacitates the prey and dissolves it. The largest food category (in "A. herberti", animals or more in length) are mostly scavenged. The only prey they regularly catch alive (not just scavenge) in the largest category is nymphs of their own species. Adults are generally highly cannibalistic towards their nymphs and older nymphs often eat younger; adults however only rarely cannibalize other adults.
Sierra newt
Earthworms, snails, slugs, woodlice, bloodworms, mosquito larvae, crickets, other invertebrates, and trout eggs are among the Sierra newt's prey. In an aquarium habitat, earthworms provide the newt with all necessary nutrients. Other natural prey items would benefit the captive newt. Pellets tend to be inappropriate for terrestrial caudates, and fish food should be avoided completely.
Neurergus
Neurergus is a genus of salamanders, more specifically newts, in the family Salamandridae. They are found in the Middle East (predominantly in Turkey and Iran), and are bred in captivity for their bright colors. In nature, they inhabit streams and small rivers, and the surrounding forests or shrublands. All of the "Neurergus" are considered threatened species, primarily due to destruction of habitat.
Corixidae
Some species within this family are preyed upon by a number of amphibians including the rough-skinned newt, "Taricha granulosa".
Bosca's newt
This newt is mostly aquatic, living in shallow ponds and streams lined with vegetation. It can be found in disturbed and artificial water bodies, such as ditches. It is known from oak woodland habitat, scrub, sandy coastal strips, and farms and plantations.
Nectria
Nectria is a genus of Ascomycete fungi. They are most often encountered as saprophytes on decaying wood but some species can also occur as parasites of trees, especially fruit trees (for example apple) and a number of other hardwood trees. Some species are significant pests causing diseases such as apple canker, Nectria twig blight, and coral spot in orchards.
List of amphibians of Taiwan
Family Cryptobranchidae — giant salamanders
Family Hynobiidae — Asian salamanders
Family Salamandridae — newts
Strauch's spotted newt
Strauch's spotted newt ("Neurergus strauchii"), or Anatolian newt is one of four species of salamander in the genus Neurergus. It is more specifically a newt, in the family Salamandridae, and is found only in Turkey. Its natural habitats are streams or small rivers, and the nearby forests or shrublands. It is threatened by habitat loss.
Paddletail newt
Paddletail newt or paddle-tail newt is a name used in pet trade for several species of newts in the following two genera:
Hampton Nature Reserve
Hampton Nature Reserve is a 300-acre site that is home to the largest population of great crested newts in Europe. The site is owned be O&H Hampton and managed by Froglife. The reserve is diverse and includes 200-year-old woodland, 340 ponds, and areas of grassland. Volunteers help Froglife with the active management of the reserve which includes building hibernacula for newts (shelters in which they can safely hibernate), tree felling to allow light onto the woodland floor, and constructing piles of rotting vegetation for grass snakes to lay their eggs in.
Tylototriton
Tylototriton is a genus of newts known as crocodile newts or knobby newts. About 14 known species are in this genus. Many species have been described just recently. They range from northeastern India and Nepal through Burma to northern Thailand, Laos, Vietnam, and southern China.
Numbat
Numbats are insectivores and eat an exclusive diet of termites. An adult numbat requires up to 20,000 termites each day. The only marsupial fully active by day, the numbat spends most of its time searching for termites. It digs them up from loose earth with its front claws and captures them with its long, sticky tongue. Despite its banded anteater name, it apparently does not intentionally eat ants; although the remains of ants have occasionally been found in numbat dung, these belong to species that themselves prey on termites, so were presumably eaten accidentally, along with the main food. Known predators on numbats include the carpet python "Morelia spilota imbricata", introduced red foxes, and various falcons, hawks, and eagles.
London
Amphibians are common in the capital, including smooth newts living by the Tate Modern, and common frogs, common toads, palmate newts and great crested newts. On the other hand, native reptiles such as slowworms, common lizards, grass snakes and adders, are mostly only seen in Outer London.
Regeneration (biology)
Limb regeneration in the axolotl and newt has been extensively studied and researched. Urodele amphibians, such as salamanders and newts, display the highest regenerative ability among tetrapods. As such, they can fully regenerate their limbs, tail, jaws, and retina via epimorphic regeneration leading to functional replacement with new tissue. Salamander limb regeneration occurs in two main steps. First, the local cells dedifferentiate at the wound site into progenitor to form a blastema. Second, the blastemal cells will undergo proliferation, patterning, differentiation and growth using similar genetic mechanisms that deployed during embryonic development. Ultimately, blastemal cells will generate all the cells for the new structure.
After amputation, the epidermis migrates to cover the stump in 1–2 hours, forming a structure called the wound epithelium (WE). Epidermal cells continue to migrate over the WE, resulting in a thickened, specialized signaling center called the apical epithelial cap (AEC). Over the next several days there are changes in the underlying stump tissues that result in the formation of a blastema (a mass of dedifferentiated proliferating cells). As the blastema forms, pattern formation genes – such as HoxA and HoxD – are activated as they were when the limb was formed in the embryo. The positional identity of the distal tip of the limb (i.e. the autopod, which is the hand or foot) is formed first in the blastema. Intermediate positional identities between the stump and the distal tip are then filled in through a process called intercalation. Motor neurons, muscle, and blood vessels grow with the regenerated limb, and reestablish the connections that were present prior to amputation. The time that this entire process takes varies according to the age of the animal, ranging from about a month to around three months in the adult and then the limb becomes fully functional. Researchers at Australian Regenerative Medicine Institute at Monash University, have published that when macrophages, which eat up material debris, were removed, salamanders lost their ability to regenerate and formed scarred tissue instead.
Wildlife of Alaska
The Taricha Granulosa, or Rough-Skinned Newt, is a salamander in the caudata order. This newt is multicolored, typically light brown on the back and yellow bellied, but can sometimes be olive green on the back. The Rough-Skinned Newt is capable of growing up to 26.1 centimeters and will typically reach at least 12.7 centimeters. The newt's name comes from the granular and rough texture on their skin. The skin on the newt is toxic and releases a powerful neurotoxin called Tetrodotoxin, which can effect mucous glands and skin.
Calotriton
Calotriton, or the European brook newts, is a genus of newts native to the Pyrenees and central Catalonia (Catalan Pre-coastal Range). These amphibians were formerly placed within genus "Euproctus", but the genus was resurrected in 2005. Instead of "Euproctus", they seem more closely related to "Triturus", their sister taxon.
Rough-skinned newt
Newts are not immune to their own toxin; they only have a heightened resistance. The toxin in newts consists of a tradeoff. Each time they release the toxin, they inject themselves with a few milligrams. The TTX becomes concentrated in certain parts of the tissue after passing through cell membranes. As a result of tissue exposure to the toxin, newts have evolved a protection mechanism via a single amino acid substitution to the voltage-gated sodium channel normally affected by TTX. Puffer fishes show a similar amino acid sequence that allows them to survive from their own toxin exposure.
Kaiser's spotted newt
Feeding is simple, as these newts are very hardy animals in captivity, and love to eat. Good feeders include Earthworms/Canadian night-crawlers, live and thawed Blackworms, live and thawed Blood-worms, calcium dusted Pinhead crickets, the occasional Waxworm, and various other insects. Insects collected outside should be avoided as they might introduce pesticides or parasites.
Sex and sexuality in speculative fiction
"War with the Newts", a 1936 satirical science fiction novel by Czech author Karel Čapek, concerns the discovery in the Pacific of a sea-dwelling race, an intelligent breed of newts - who are initially enslaved and exploited by humans and later rebel and go war against them. The book includes a detailed appendix entitled 'The Sex Life of the Newts', which examines the Newts' sexuality and reproductive processes in a pastiche of academese. This is one of the first attempts to speculate on what form sex might have among non-human intelligent beings.
Iberian ribbed newt
The Iberian ribbed newt or Spanish ribbed newt ("Pleurodeles waltl") is a newt endemic to the central and southern Iberian Peninsula and Morocco. It is the largest European newt species and it is also known for its sharp ribs which can puncture through its sides, and as such is also called the sharp-ribbed newt. This species should not be confused with the different species with similar common name, the Iberian newt ("Lissotriton boscai").
Neoteny
Many species of salamander, and amphibians in general, are known to have neotenized characteristics because of the environment they live in. Axolotl and olm are species of salamander that retains their juvenile aquatic form throughout adulthood, examples of full neoteny. Gills are a common juvenile characteristic in amphibians that are kept after maturation; an example of this would be a comparison of the tiger salamander and the rough-skinned newt, both of which retain gills into adulthood.
Pseudomyrmex spinicola
Pseudomyrmex spinicola is a species of red myrmecophyte-inhabiting neotropical ants which are found only in Nicaragua and Costa Rica. They live in the thorns of a tropical trees like "Acacia collinsii" or "Acacia allenii", feeding on nectaries along with the protein and lipid-rich beltian bodies. These bodies are named for Thomas Belt, a naturalist who first described the interactions between acacias and ants in his 1874 book "Naturalist in Nicaragua." Belt's book in fact described ants of this species, then unknown.
Triturus
Like other newts, "Triturus" species are carnivorous and feed mainly on invertebrates. During the land phase, prey include earthworms and other annelids, different insects, woodlice, and snails and slugs. During the breeding season, they prey on various aquatic invertebrates, and also tadpoles of other amphibians such as the common frog or common toad, and smaller newts. Larvae, depending on their size, eat small invertebrates and tadpoles, and also smaller larvae of their own species.
Italian crested newt
When newts are inactive or in oxygen-rich environments, respiration can be done through their skin which accounts for 74% of the cutaneous respiration. However, oxygen-poor environments, such as stagnant ponds, pose a threat to the survival of larval newts. This is because oxygen molecules do not readily dissolve in water, and as "T. carnifex" is an immobile animal, extracting oxygen from water is difficult. Newts consequently have external gills at birth that persist until metamorphosis, which assists survival in low-oxygen conditions.
Newt fencing
The great crested newt "Triturus cristatus" is an amphibian native to the UK but also widespread across Northern Europe. Whilst it is relatively widespread in the UK (in fact the UK hosts one of the great crested newt's most significant populations), it is rare on a European wide basis. The great crested newt is listed as a "strictly protected fauna species" under appendix II of the Convention on the Conservation of European Wildlife and Natural Habitats:
and consequently is protected under UK legislation through the Wildlife and Countryside Act and the Conservation (Natural Habitat) regulations 1994. Under these regulations it is an offence to intentionally disturb, injure or kill any great crested newt, or disturb or destroy its habitat. Likewise, the Habitats Regulations 2010 do not apply to all newts, and in the case of e.g. smooth newt species, they are protected differently, under the Wildlife and Countryside Act 1981 (as amended).
War with the Newts
War with the Newts (Válka s mloky in the original Czech), also translated as War with the Salamanders, is a 1936 satirical science fiction novel by Czech author Karel Čapek. It concerns the discovery in the Pacific of a sea-dwelling race, an intelligent breed of newts, who are initially enslaved and exploited. They acquire human knowledge and rebel, leading to a global war for supremacy. There are obvious similarities to Čapek's earlier "R.U.R.", but also some original themes.
Smooth newt
Smooth newts are also potential transmitters of chytrid fungus, because a close relative of the newt carries this disease. Chytrid fungus has decimated frog populations worldwide, and caused extinctions and widespread declines in Australian frogs.