Friday 24 May
Chinese giant salamander (Andrias davidianus)
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Chinese giant salamander fact file
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Chinese giant salamander description
The Chinese giant salamander (Andrias davidianus) is the largest salamander in the world, and is fully aquatic, with many adaptations for this lifestyle. It grows up to 1.8 metres in length, though most individuals found today are considerably smaller (2). The skin is dark brown, black or greenish in colour and irregularly blotched. It is also rough, wrinkled and porous which facilitates respiration through the skin as this large amphibian lacks gills (4). The Chinese giant salamander has an elongated body, and two pairs of legs which are roughly similar in size. The snout is less rounded than that of the related Japanese giant salamander and the tail is a little longer and broader. Both species have tubercles on the head and throat, though their arrangement is different. The Chinese species has small, paired tubercles arranged in rows parallel with the lower jaw, while the Japanese species’ tubercles are mostly single and irregularly scattered (4). The eyes are tiny, with no eyelids, and positioned on top of the broad, flat head, providing the salamander with poor vision (5).
- Also known as
- Chinese salamander.
- Length: 1.8 m (2)
BBC Wildlife Finder:
EDGE of Existence:
- The fusion of gametes (male and female reproductive cells) to produce an embryo, which grows into a new individual.
- Stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
- Of the stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
- Nodule or swelling on or in the body.
IUCN Red List (November, 2007)
- Cogger, H. (1999) Reptiles and Amphibians. Time Life Books, London.
CITES (November, 2003)
Amphibia Web – Chinese giant salamander (November, 2003)
- Halliday, T. and Adler, K. (2002) The New Encyclopedia of Reptiles and Amphibians. Oxford University Press, Oxford.
Smithsonian National Park (November, 2003)
- Xiao-ming, W., Ke-jia, Z., Zheng-huan, W., You-zhong, D., Wei, W. and Song, H. (2004) The decline of the Chinese giant salamander Andrias davidianus and implications for its conservation. Oryx, 38: 197-202.
UNEP-WCMC: Mount Wuyi (November, 2003)
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Chinese giant salamander biology
The Chinese giant salamander is generally active at night, when it relies on smell and touch to locate its prey. This huge amphibian lives in muddy, dark rock crevices along riverbanks and feeds on fish, smaller salamanders, worms, insects, crayfish and snails, catching them with a rapid sideways snap of the mouth (2) (5).
Like other amphibians, this salamander has smooth skin that lacks scales. The moist skin acts as a respiratory surface, where oxygen enters the body and carbon dioxide is released (4).
Mating behaviour has been described for the Japanese giant salamander (Andrias japonicus) and is probably similar for the Chinese giant salamander (4). Reproduction appears to take place from late August to September, when hundreds of individuals congregate at nest sites (4) (6). Males occupy breeding cavities which are aggressively guarded against intruders (6). Males compete viciously, with many dying from injuries (6). Females enter the cavities, lay between 400 and 500 eggs that are held together like a string of beads and then leave immediately (4) (6). The male fertilises the eggs, and protects them from predators such as fish, until they hatch 12 to 15 weeks later in the early spring (4) (7). The larvae are only three centimetres long and resemble adults in shape. As larvae they do have gills, and though they lose them quite early in life, they never fully lose all larval characteristics. Both the Chinese and Japanese giant salamanders are long lived, with one specimen in captivity living for 52 years (4).Top
Chinese giant salamander range
Occurring in the mountain streams of China, the Chinese giant salamander is found at elevations below 1,500 metres in the tributaries of the Pearl, Yellow and Yangtze Rivers (4).Top
Chinese giant salamander habitat
The Chinese giant salamander inhabits cold, fast running mountain streams and lakes, occupying hollows and cavities under water (4).Top
Chinese giant salamander statusTop
Chinese giant salamander threats
The Chinese giant salamander is threatened by hunting, as its flesh is considered a delicacy in Asia. Other threats include habitat alteration and loss; deforestation causes soil erosion and increased runoff and silting in rivers. The building of dams in China over the years has also changed the natural river flow in some areas where the Chinese giant salamander is found. Local pesticides, fertilizers and pollutants are also thought to affect the health of this amphibian, though little research has been conducted. Symptoms of these recent threats include the lower numbers of Chinese giant salamanders recorded, with smaller populations and also smaller individuals (4).Top
Chinese giant salamander conservation
The Chinese giant salamander is now protected from international trade by its listing on Appendix I of the Convention of International Trade of Endangered Species (CITES) (3). Since the 1980s, 14 nature reserves, with a total area of more than 355,000 hectares, have been established for the conservation of the Chinese giant salamander (7). This includes a huge 99,975 hectare area of Mount Wuyi, China, which was designated as a World Heritage Site in 1999, dedicated to conserving this biodiverse region, including the habitat of this salamander (8). The surrounding area has a growing population and the establishment of this reserve will protect many species. However, there are still concerns that development around the reserve, and tourism plans within the reserve, will place pressure on Mount Wuyi’s rich resources, healthy rivers and habitats. Conservation efforts to protect this habitat and other areas where the ancient Chinese giant salamander is found are essential for the survival of this species and many others (8).Top
Find out more
For further information on the Chinese giant salamander, see:
Authenticated (09/04/08) by Jessi Krebs, Supervisor, Reptiles and Amphibians, Omaha's Henry Doorly Zoo.
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