axolotl


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axolotl

(ăk`səlŏt'əl), a salamandersalamander,
an amphibian of the order Urodela, or Caudata. Salamanders have tails and small, weak limbs; superficially they resemble the unrelated lizards (which are reptiles), but they are easily distinguished by their lack of scales and claws, and by their moist, usually
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, Ambystoma mexicanum, found in certain lakes in the region of Mexico City, which reaches reproductive maturity without losing its larval characteristics. This phenomenon is called neotenyneoteny
, in biology, sexual maturity reached in the larval stage of some animals. Certain environmental conditions can inhibit the completion of metamorphosis; low temperature or lack of available iodine retard the action of the thyroid gland, the larval form may mature
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; in salamanders it is apparently caused by certain environmental conditions, particularly a low level of iodine in the water, which affects the functioning of the thyroid gland. The axolotl grows larger than ordinary larval salamanders and develops sexually, but it retains bushy external gills and a well-developed tail. It also has a broad head and stubby legs; its skin is a black-speckled dark brown. Permanently aquatic, never undergoing metamorphosis to a terrestrial form characteristic of amphibiansamphibian,
in zoology, cold-blooded vertebrate animal of the class Amphibia. There are three living orders of amphibians: the frogs and toads (order Anura, or Salientia), the salamanders and newts (order Urodela, or Caudata), and the caecilians, or limbless amphibians (order
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, it may grow as long as 13 in. (33 cm). It is also known as the Mexican walking fish because of its appearance.

The axolotl was not recognized as a salamander until 1865, when several specimens at the Jardin des Plantes in Paris suddenly underwent metamorphosis. After some experimentation it was discovered that when their pools were dried up most of the animals changed into the adult form. Axolotls will also mature normally if fed thyroid gland extract. The related North American tiger salamander, A. tigrinum, often exhibits neoteny in the Rocky Mts., where the iodine content of the water is low. Since the late 1990s the axolotl has become increasingly endangered in its natural habitat due to pollution and competition from introduced fish.

The axolotl is classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Amphibia, order Urodela, family Ambystomidae.

axolotl

[¦ak·sə¦läd·əl]
(vertebrate zoology)
The neotenous larva of some salamanders in the family Ambystomidae.

axolotl

1. any of several aquatic salamanders of the North American genus Ambystoma, esp A. mexicanum (Mexican axolotl), in which the larval form (including external gills) is retained throughout life under natural conditions (see neoteny): family Ambystomidae
2. any of various other North American salamanders in which neoteny occurs or is induced
References in periodicals archive ?
Aunque es un poco arriesgado, me atrevo a afirmar que en Antropologia del cerebro y en Cerebro y libertad, de alguna manera, encontramos de nuevo al axolotl y al salvaje, esta vez camuflados en las discusiones sobre la autoconciencia, la identidad, el placer y el dolor, la libertad y la moral (quizas encarnados en las manos de Orlac y en e juego de "la pipa que no es una pipa" de Magritte).
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Axolotls are fully grown by age 2 and range in length from 6 to 18 inches.
Nuestra hipotesis de lectura es que en Lejana y Axolotl de Cortazar se construye un singular sujeto postmoderno, entendiendo por "sujeto postmoderno" quien horada los codigos de la modernidad--entendida esta, de acuerdo al modelo de identidad burguesa, es decir, regulada por oposicion binaria; yo versus otro.
75 million in private funding, QHN chose Axolotl for its connectivity solution.
Ahi, en el Jardin des Plantes, los axolotl viven en un "mezquino y angosto .
Axolotl Corp, a provider of browser-based products and services for health care organisations, said on Monday that its Elysium Exchange suite of solutions has been chosen by Memorial Healthcare System in Florida to securely access and share clinical information between physician practices and medical staff.
The eHealthConnect Image Exchange service will integrate with the Rochester RHIO's Axolotl Corp.
En el caso de los cuentos Continuidad y Axolotl hemos encontrado dos traducciones diferentes en ingles, de ahi que haya dos columnas para los datos del ingles.
The axolotl is in danger of extinction in its native environment, but an effort to revive a green space in the city may help to improve its prospects.
Cortazar's protagonist is a nameless and faceless person who ostensibly becomes, via a fantastic twist of narrative perspective, a salamander-like axolotl.
Most recently SureScripts announced an e-prescribing agreement with Axolotl, which provides Web-based products and services that automate health information management (HIM) and communication among HIM departments, hospitals, clinics, laboratories and 13,000 physicians.