Newts' New Eyes

Cut off a newt’s tail or a leg, or remove a lens from its eye, and it grows back. However, whether newts can continue to do this throughout their lives, or lose the ability as they get older, has remained a mystery. 

By | December 1, 2011

Japanese fire-bellied newt Kenta Hayashi

Japanese fire-bellied newt Kenta Hayashi

Newts' New Eyes Image Gallery

Cut off a newt’s tail or a leg, or remove a lens from its eye, and it grows back. However, whether newts can continue to do this throughout their lives, or lose the ability as they get older, has remained a mystery. Now, in an experiment spanning 16 years, Goro Eguchi of the Shokei Educational Institution, Japan, and Panagiotis Tsonis at the University of Dayton, Ohio, have discovered that newts can regenerate missing parts well into old age. With the help of Eguchi's wife, Yukiko Eguchi, they bred and raised captured Japanese fire-bellied newts (Cynops pyrrhogaster) at home. Yukiko’s skill with the newts kept them alive for sixteen years, during which time Tsonis and Eguchi removed lenses from the same animals 18 times. Eguchi estimates that the newts were about 14 years old when he captured them, making them 30 at the time the experiment was completed.

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Comments

December 19, 2011

Yes. I observed the same. Perhaps it is to save the lizard from enemies when it is caught with the tail. Mysteries of nature indeed. 

Dr.A.Jagadeesh  Nellore
(AP), India

E-mail: anumakonda.jagadeesh@gmail.com

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Posts: 0

December 19, 2011

Yes. I observed the same. Perhaps it is to save the lizard from enemies when it is caught with the tail. Mysteries of nature indeed. 

Dr.A.Jagadeesh  Nellore
(AP), India

E-mail: anumakonda.jagadeesh@gmail.com

Avatar of:

Posts: 0

December 19, 2011

Yes. I observed the same. Perhaps it is to save the lizard from enemies when it is caught with the tail. Mysteries of nature indeed. 

Dr.A.Jagadeesh  Nellore
(AP), India

E-mail: anumakonda.jagadeesh@gmail.com

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