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Objective:The
overall objective of this laboratory experiment is to
examine specification in the axolotl through transplantation
of the gill organ field.
Introduction:The
axolotl (Ambystoma mexicanum) is a large salamander
which is native to Lake Xochimilco, Mexico. The axolotl is a
member of a larger group of salamanders known as mole
salamanders. Other members of this group include tiger
salamanders and spotted salamanders. The wild type axolotl
is distinguished by its dark color which may contain
greenish mottling and silvery patches. The albino type
axolotl is white (without pigment). The average axolotl can
reach a length of approximately 12 inches from nose to tail
and can weigh up to 300 grams. Axolotls are neotenic, which
means they will possess their feathery external gills and
tail fin their entire lives while they maintain an aquatic
lifestyle (http://www.indiana.edu/~axolotl/
).
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