But as the species became rarer, more destructive methods were used. But this may have caused more harm than good, says Cunningham. View image of Underneath a giant Chinese salamander Credit: Furthermore, they were not monitored, and there was no overall evaluation of whether the scheme was a success or a failure. The famous yin and yang symbol of opposites is thought to have originally been two Chinese giant salamanders, harmoniously intertwined. When they were more common, poaching was easy, says Cunningham.
ZSL London Zoo "We also propose improved biosecurity and disease control measures on farms, such as quarantining new stock and treating wastewater to prevent the discharge of pathogens from farms into the wild. Also, if the two groups interbreed it is bad news for the wild ones, as farmed ones tend to be more inbred. They can get pretty heavy too, up to 50kg. But the more that are taken from the wild, the slower the population rebounds, as young salamanders take several years to reach sexual maturity. The salamanders are often captured from the wild to stock these farms The growing salamander farming industry is largely to blame, despite being only a decade old. Furthermore, they were not monitored, and there was no overall evaluation of whether the scheme was a success or a failure. Conservationists are now working on that. The animals released weren't screened for disease, so they could have been spreading pathogens. Since the s their population has fallen dramatically. They have remained pretty much unchanged since the days of Tyrannosaurus rex, says Cunningham. The species might soon become extinct in the wild Unfortunately, the penalties for being caught are low, says Cunningham. They have underwater breeding dens, usually large hollows under rocks or in crevices, where they allow several females to enter to lay large clusters of eggs. For instance, captive ones could be tagged with microchips: Chinese giant salamanders are the world's largest living amphibians, growing up to 1. When they were more common, poaching was easy, says Cunningham. But as the species became rarer, more destructive methods were used. Only if and when that happens will it have a future. A den master will then guard and care for these eggs for over a month after they hatch. Having identified these threats, conservationists say they are in a position to protect the species. By Melissa Hogenboom 18 March It's not often that you hear an animal being referred to as a "den master". There were no tests of whether their genetic makeup was suitable for the environments where they were re-homed. View image of They are longer than many humans Credit: For example, no captive salamanders should be released into the wild. A recent investigation into the salamander farming industry, published in the journal Oryx , reports that if wild populations continue to be depleted in this way, the species might soon become extinct in the wild. What's more, their sheer size makes them a lucrative food source. As a result the salamanders are often captured from the wild to stock these farms. The salamanders are considered a delicacy, despite being a protected species.
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