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Sunday, October 23, 2011

Giant Salamander

Beauty Of AnimalGiant Salamander | hellbender and Asian giant salamanders (family Cryptobranchidae) and amphibians found in streams and ponds in the United States, China and Japan. It is the largest living amphibians known today. Japanese giant salamander (Andrias japonicus), for example, up to 1.44 meters (4.7 feet), feeds on fish, crustaceans, and was known to live for more than 50 years in captivity. The Chinese giant salamander (Andrias davidianus) can reach a length of 1.8 meters (5.9 feet). Cryptobranchids large, fleshy salamanders, with large folds of skin along their sides. This helps to increase the surface area of ​​the animal, and allow them to absorb more oxygen from the water. They have four toes on the forelimbs, and five on the hind limbs.

Deformed from their larval stage is incomplete, so that adults retain gill slits (although they are also the lungs), and the lack of eyelids. And can be up to a fixed size of 2 meters (6 feet 6 inches) in length. It weighs up to 145 lbs. The Chinese giant salamanders lived as long as 75 years in captivity. The Chinese giant salamander eats aquatic insects, fish, and frogs, as well as lobster and shrimp.They hunt mainly at night, as they have poor eyesight, they use the contract sensual in the head and body to detect tiny changes in water pressure, allowing them to detect the mating season prey.During, the salamanders travel upstream, where the female places the two series of more than 200 eggs each of them.

The male fertilizes the eggs externally by releasing his sperm on them, and then the guard will have at least three months, until they hatch. At this point, the larvae will live off of stored fat observed until ready to hunt. Once ready, and they hunt as a group and not individually.Scientists discovered in the zoo city of Hiroshima in Japan in recent times that the salamander Asa male will spawn with more than one woman in his den. Sometimes the men, "Mr. Dunn" also allow the second man in the den, and the reason for this is unclear.

Scientific classificationKingdom: AnimaliaPhylum: ChordataClass: AmphibiaSubclass: LissamphibiaOrder: CaudataSuborder: CryptobranchoideaFamily: Cryptobranchidae

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