TAILIEUCHUNG - Báo cáo y học: "They fought the law and the law won."

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài:They fought the law and the law won. | Comment They fought the law and the law won Gregory A Petsko Address Rosenstiel Basic Medical Sciences Research Center Brandeis University Waltham MA 02454-9110 USA. Published 2 November 2007 Genome Biology 2007 8 111 doi gb-2007-8-10-111 The electronic version of this article is the complete one and can be found online at http 2007 8 10 111 2007 BioMed Central Ltd Australia used to have a cane beetle problem. The cane beetle was slowly destroying the country s sugar cane crops and there seemed to be no way to get rid of it. Then in 1935 someone had the bright idea to import a box of cane toads from the Hawaiian Islands where the large frogs which were 25 cm long and up to 4 kg in weight supposedly kept the pest in check. So 102 cane toads were delivered to Gordonvale just south of Cairns where after a few rounds of captive breeding to increase their numbers they were released into the sugar cane fields. Then the fun began. It turned out that cane toads can t jump very high so they did not eat the cane beetles which tended to reside on the upper stalks of the cane plants. But they were able to eat just about anything else dog food mice the insects that native Australian frogs eat the native Australian frogs themselves and so on. They bred like flies a pair of cane toads can lay 33 000 eggs per spawning. They proved resistant to herbicides that would normally kill frogs and tadpoles. And they are deadly poisonous so they had no natural predators. Australian museums have exhibits of snakes that were killed by toad toxin so fast that the toads are still in their mouths. The cane toad has turned out to be one of Australia s worst environmental disasters. Since 1935 it has spread across most of Queensland the entire Northern Territory and down the coast of New South Wales. So now Australia has a cane toad problem. Oh yes and it still has a cane beetle problem. The cane toad is one of the more spectacular examples of the only scientific law for

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