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perch_wide-4516b69fb2803c6e168bfc34cb5b2ce7db1c88a1-s4005.jpg
简介：Perch exposed to the anxiety drug oxazepam were more daring and ate more quickly than fish that lived in drug-free water.
参与方式：全文听写
valium
Dan
Schlenck
Bryan
Brooks
Baylor
University
Richard Harris
不同说话者换行即可~口误重复不用写
Scientists now realize that low levels of pharmaceuticals have spread through the environment. Schlenck has found concentrations of a valium-like drug in a fish that lives on the sea floor off the California coast, for instance. And other lab studies have shown that human drugs can affect the behavior of striped bass and other species.
Bryan Brooks, at Baylor University, says as yet, these drug traces don't pose an obvious threat to people who might drink the water from the streams or eat the fish that live in them.
The presence of pharmaceuticals in surface waters or even the residues that accumulate in, say, edible fish and shellfish, are much lower than what you might need to gain a therapeutic dose, for example.
But he cautions that is not necessarily the case in the developing world.
Some of the observations in India, for example, downstream of manufacturing facilities, are among the highest concentrations of pharmaceuticals reported in the environment. And so, the developing world really deserves some additional attention.
And as the Swedish study makes clear, we don't have the whole story yet regarding the impact of pharmaceuticals in lakes, rivers and streams. But scientists are ratcheting up their attention to these questions.
Richard Harris, NPR News. | 
发表于 2016-8-2 11:40:38