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Q: Amfibiums i Mexico ( Answered 5 out of 5 stars,   0 Comments )
Question  
Subject: Amfibiums i Mexico
Category: Science > Biology
Asked by: donanoche-ga
List Price: $5.00
Posted: 27 Nov 2002 15:23 PST
Expires: 27 Dec 2002 15:23 PST
Question ID: 115680
Is theer a salmander living in a lake near Mexico that is called
oxelot? I am told that it is a speial spiesi that only lives in one
lake and that it never reaches adult stage in life.
Answer  
Subject: Re: Amfibiums i Mexico
Answered By: bobbie7-ga on 27 Nov 2002 16:17 PST
Rated:5 out of 5 stars
 
Hello Donanoche and thank you for your question.


The Axolotl belongs to the order of amphibians known as Caudata or
Urodela. The order of Urodela includes newts and salamanders. The
scientific name is Ambystoma Mexicanum.

“The Axolotl belongs to the genus Ambystoma. The term Axolotl should
be restricted to the species Ambystoma mexicanum from Lake Xochimilco
and Lake Chalco in the area to the southeast of Mexico City.”
http://www.hi.hkg.ac.jp/_liken/eng/axolotl.html


“Prior to the growth of Mexico City in the basin of Mexico, the
Axolotl was native to both Lake Xochimilco, and Lake Chalco. Of these
two high altitude freshwater lakes, only the remnants of Xochimilco as
canals can be seen today. The Axolotl is now on the endangered species
list, although there have been recent 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 because of the huge numbers bred in
captivity each year.”

Source: The Online Newt and Salamander Information Portal
http://www.caudata.org/axolotl/

The Axolotl can re-grow a lost limb.

“It has long been known that the Axolotl is a worthy study due to its
amazing healing abilities. Normal wound-healing in animals occurs
through the growth of scar tissue, and this also means that most
animals won't re-grow a lost limb. However, the axolotl is fully
capable of complete limb re-growth.”

When you mention that the Axolotl never reaches the adult stage in
life you must be referring to Neoteny. Neoteny means that the axolotl
becomes sexually mature while still exhibiting larval traits. The
following short excerpt discusses this characteristic:

“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, and
finally to adult form. The axolotl, along with a number of other
amphibians, remains in its larval form, meaning that it retains its
gills and fins, and doesn't develop the protruding eyes, eyelids and
characteristics of other adult salamanders. It grows much larger than
a normal larval salamander, and reaches sexual maturity in this larval
stage.”

Source: The Online Newt and Salamander Information Portal
http://www.caudata.org/axolotl/

Additional information that may interest you:

Synonyms:
Mexican Axolotl, Mexican Salamander, Mexican Walking Fish 

Origin  Mexico:
Originally from Lakes Xochimilco and Chalco. Lake Chalco no longer
existss

Source: Axolotl Fact Sheet
http://www.caudata.org/caudatecentral/caresheets/axolotl.html

Axolotl Breeding
http://www.caudata.org/axolotl/breeding.htm


Search Criteria:

Mexican amphibian +lake
Axolotl


I hope you find this helpful and if there is anything that I've
written that needs clarification, please ask before you rate this
answer.

Best Regards,
Bobbie7-ga
donanoche-ga rated this answer:5 out of 5 stars and gave an additional tip of: $5.00
This was a very good answer. I got information on all the subjets I
had asked for. And i got the rigth name for the animal. Thank you wery
much.

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