An introduction to the salamander

This article is the first in a series of mini-articles that outline the benefits and the value proposition available by Salamander heaters.

An introduction to the salamander

Advanced Search Search Forum Welcome! This web site is devoted to the Axolotl pronounced Ax-oh-lot-ulscientific name Ambystoma mexicanum.

An introduction to the salamander

You will also find information about the Tiger SalamanderAmbystoma tigrinum and Ambystoma mavortium spp. One common misconception is that axolotls and other salamanders are lizards or reptiles.

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In fact, amphibians are a completely separate group of animals. For example, did you know that reptiles and human beings have a four-chambered heart? Well amphibians have only three chambers. This page is a brief introduction for those new to the Axolotl and salamanders. If you require specific information, you can search this site using the search facility at the top right of this page.

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There is a very busy axolotl forum at Caudata. I hope that you find this site useful, but most of all I hope you enjoy what you read and find here. Axolotls of various colours occur in captivity, including grey, shades of brown, leucistic white with black eyesgolden albino, white albino, as well as other varieties, such as the melanoid a near-black animal.

There are even "piebald" axolotls in various coloursand a variety that is piebald in more than one colour, known as the "harlequin". You can learn more about how colour comes about and how it An introduction to the salamander passed on by taking a look at the Genetics Page.

And why not take a look at the hundreds of photos of the weird and wonderful varieties of axolotls submitted by enthusiasts like yourself at the Axolotl Section of the Caudata. The name "Axolotl" comes from the Aztec language, "Nahuatl". One of the most popular translations of the name connects the Axolotl to the god of deformations and death, Xolotl, while the most commonly accepted translation is "water-dog" from "atl" for water, and "xolotl", which can also mean dog.

Of these two high altitude freshwater lakes, only the remnants of Xochimilco as canals can be seen today. Unfortunately many information sources mention these lakes as if they still exist such as this ill-researched article about a metamorphosed axolotl on the BBC News Web site.

If only this were still the case: There have been efforts to breed and release the animal, in order to re-establish its numbers. Fortunately, due to the importance of the Axolotl in scientific research, it is unheard of for them to be taken from the wild for that purpose because of the huge numbers bred in captivity each year.

There are related Mexican Ambystoma species that also remain gilled as adults. These species are located in water bodies further from Mexico city and may have a slightly brighter future in the wild than the Axolotl.

It has long been known that the Axolotl is a worthy study due to its amazing healing and regeneration abilities. Normal wound healing in animals occurs through the growth of scar tissue, which is not the same as the original tissue, nor is it as robust. Normal wound healing also does not allow for most animals to re-grow a lost limb.

However the axolotl is fully capable of complete limb re-growth. The animal has the added scientific attraction of having especially large embryos, making it easier to deal with under laboratory conditions. Its embryo is also very robust, and can be spliced and combined with different parts of other axolotl embryos with a high degree of success.

The Axolotl is a fascinating creature for a number of reasons, including its grotesque appearance, its ability to regenerate, and primarily the fact that it exhibits the phenomenon known as neoteny.

Ordinarily, amphibians undergo metamorphosis from egg to larva the tadpole of a frog is a larvaand finally to adult form. The Axolotl, along with a number of other amphibians, remains in its larval form throughout its life. It grows much larger than a normal larval salamander, and it reaches sexual maturity in this larval stage.

Another term to describe this state is "perennibranchiate".

The animal is completely aquatic, and although it does possess rudimentary lungs, it breathes primarily through its gills and to a lesser extent, its skin. It is generally accepted that neoteny is a "backward" step in evolution, because the Axolotl is descended from what were once terrestrial salamanders, like the closely related species, the Tiger SalamanderAmbystoma tigrinum and Ambystoma mavortium spp.

Through some quirk of nature, a neotenous form developed and, probably due to environmental conditions, prospered. Neoteny is sometimes found in other amphibians, but tends to be caused by low levels of iodine an essential element for animals to make thyroxine hormones, necessary for growth and developmentor possibly by random genetic mutation.

Research has also shown that very low temperatures can suppress the production of these hormones, thus also inducing neoteny. When treated with hormones, the axolotl will usually begin to metamorphose, but in very rare cases it will metamorphose spontaneously, such as the metamorphosed wild type axolotl pictured here.The Carolina Herp Atlas is keeping a database of amphibian and reptile distributions allowing amateur naturalists and herpetology researchers to track observation records and obtain a better understanding the amphibian and reptile ecology.

The skin lacks scales and is moist and smooth to the touch, except in newts of the Salamandridae, which may have velvety or warty skin, wet to the touch. The skin may be drab or brightly colored, exhibiting various patterns of . The Synergy System Defining Original Since its introduction, the Synergy System has set the standard for what A/V furniture should be.

We've taken several of the most popular configurations from the system and have packaged them as individual units. Examples of some unisexual salamanders in Ohio from Henry County (top left and right), Kelleys Island (bottom left) and Wood County (bottom right).

The skin lacks scales and is moist and smooth to the touch, except in newts of the Salamandridae, which may have velvety or warty skin, wet to the touch.

The skin may be drab or brightly colored, exhibiting various patterns of stripes, bars, spots, blotches, or dots. Welcome! This web site is devoted to the Axolotl (pronounced Ax-oh-lot-ul), scientific name Ambystoma site describes the Axolotl's background, biology, and care in captivity.

Wandering Salamander - Aneides vagrans