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THE JAPANESE GIANT SALAMANDER | ||||||
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The Giant Salamanders, the largest living amphibians, belong to family Cryptobranchoidea
(interesting name, isn’t it?). In spite of this giant salamanders are
significantly less known by the large public than their analogous in reptiles’
world, the Komodo Dragons. The family Cryptobranchoide has two genus with one
(Cryptobabranchus alleganiensis) respectively two species (Andrias davidianus,
A. japonicus). A. japonicus is restricted to Japan, A. davidianus in China while
C. alleganiensis lives in North America. A. japonicus lives in the cold fast
flowing mountain streams and smaller rivers of Kyushu Island and western Honshu
in Japan. Thirty million years old fossilized Giant Salamanders have been found
in Europe as well. The giant salamanders are considered true “biological
relicts”. Leading scientists admit that they did not evolve in the last
20-30 million years. For scientist these rather primitive salamanders are clues
to the understanding of the roots of Earth’s biodiversity. As their way
of life has not changed significantly students of Giant Salamanders may provide
insightful information on the ecosystems that existed million years ago. u5z24zd Biology of Andrias japonicus A. japonicus lives to the age of 50 years, growing continuously throughout
their lives they may reach a body size of 150 cm and a body weight of 25-30
kg. They can breathe both on land and in water. The skin that absorbs oxygen
direct from the water allows them to stay immersed for longer periods. Unlike
most salamanders they never leave the aquatic habitat. |
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