ScienceDaily (Apr. 2, 2012)— The world's most popular weed killer, Roundup®, can cause amphibians to change shape, according to research recently published in Ecological Applications. Prof.Rick Relyea,Department of Biological Sciences, University of Pittsburgh, demonstrated that sublethal and environmentally relevant concentrations of Roundup® caused two species of amphibians to alter their morphology. According to Relyea, this is the first study to show that a herbicide can induce morphological changes in a vertebrate animal. "This discovery highlights the fact that pesticides, which are important for crop production and human health, can have unintended consequences for species that are not the pesticide's target," says Relyea. "Herbicides are not designed to affect animals, but we are learning that they can have a wide range of surprising effects by altering how hormones work in the bodies of animals. This is important because amphibians not only serve as a barometer of the ecosystem's health, but also as an indicator of potential dangers to other species in the food chain, including humans." This scientific research finding again proves, “glyphosate … has no danger to human health” advocated by Fang Zhou-zi, not only is a out-and-out fallacy, and in-fact is to promote deliberate crime evil!
Roundup Herbicide Can Induce Morphological Changes in Vertebrate Animals: Tadpoles Change Shape
草甘膦除草剂对脊椎动物中可以诱发形态改变
-- 禁止抗草甘膦转基因作物原料进口、开发、种植、销售理由之230
-- The 229th reason to forbid import, development, growing and selling of RR soybeans
ScienceDaily (Apr. 2, 2012)— The world's most popular weed killer, Roundup®, can cause amphibians to change shape, according to research recently published in Ecological Applications. [1]
Rick A. Relyea. New effects of Roundup on amphibians: Predators reduce herbicide mortality; herbicides induce antipredator morphology. Ecological Applications, 2012; 22 (2): 634 DOI:10.1890/11-0189.1
Rick A. Relyea。草甘膦除草剂对于脊椎动物新的作用：食肉动物减少除草剂死亡率；除草剂诱发抗食肉动物形态。生态应用，2012; 22 (2): 634 DOI:10.1890/11-0189.1
Department of Biological Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 USA
作者单位，生物科学系，匹兹堡大学，宾色法尼亚，美国。
Rick Relyea, University of Pittsburgh professor of biological sciences in the Kenneth P. Dietrich School of Arts and Sciences and director of Pitt's Pymatuning Laboratory of Ecology, demonstrated that sublethal and environmentally relevant concentrations of Roundup® caused two species of amphibians to alter their morphology. According to Relyea, this is the first study to show that a herbicide can induce morphological changes in a vertebrate animal.
瑞克·利莱伊，匹兹堡大学Kenneth P. Dietrich文学与科学学院生物科学教授，匹兹堡生态谐调实验室主任，演示了亚致死量与环境中存在浓度的草甘膦除草剂农达造成两种脊椎动物改变它们的形态。根据利莱伊教授，这是表明一种除草剂可以诱发脊椎动物形态改变的头一项研究。
Relyea set up large outdoor water tanks that contained many of the components of natural wetlands. Some tanks contained caged predators, which emit chemicals that naturally induce changes in tadpole morphology (such as larger tails to better escape predators). After adding tadpoles to each tank, he exposed them to a range of Roundup® concentrations. After 3 weeks, the tadpoles were removed from the tanks.
"It was not surprising to see that the smell of predators in the water induced larger tadpole tails," says Relyea. "That is a normal, adaptive response. What shocked us was that the Roundup® induced the same changes. Moreover, the combination of predators and Roundup® caused the tail changes to be twice as large." Because tadpoles alter their body shape to match their environment, having a body shape that does not fit the environment can put the animals at a distinct disadvantage.
Predators cause tadpoles to change shape by altering the stress hormones of tadpoles, says Relyea. The similar shape changes when exposed to Roundup® suggest that Roundup® may interfere with the hormones of tadpoles and potentially many other animals.
"This discovery highlights the fact that pesticides, which are important for crop production and human health, can have unintended consequences for species that are not the pesticide's target," says Relyea. "Herbicides are not designed to affect animals, but we are learning that they can have a wide range of surprising effects by altering how hormones work in the bodies of animals. This is important because amphibians not only serve as a barometer of the ecosystem's health, but also as an indicator of potential dangers to other species in the food chain, including humans."
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