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英国研究发现:排入河道里的避孕药让鱼变性了

2017-07-05 11:31:39   封面新闻

Tyler教授

“我们人类每天会用2万到3万种化学物质,大部分化学物质最后都会进入大自然,其中几千种会对动物的内分泌系统造成损害。”Tyler教授说道。

“我们现在关注的,是那些我们非常确定,能造成鱼儿性别错乱的化合物。”

正如给鱼类带去的性别干扰,这些类雌激素才被发现能在许多方面产生影响。避孕药中的荷尔蒙通过雄性鮈鱼的雌激素受体被吸收,而双酚通过许多不同的途径进入它们体内,比如被甲状腺吸收,从而改变了鱼儿的心脏瓣膜,以及其他一些复杂的改变。

Tyler教授表示,尽管这项研究主要以鮈鱼为研究对象,但这种生理变化很有可能对英国更珍稀的鱼类造成威胁。因为研究发现,白杨鱼、斑马鱼,它们都变了,对渔民更热情,对交配更冷淡。

“现在,除了南极洲,全世界都有雌性化的鱼”,Tyler教授说道,“其他未被测的鱼被影响的可能性非常高。”

美国科学家研究发现有80%的雄性鱼的精巢中出现未成熟的鱼卵

早在2010年,美国科学家研究全美111个地方的16种鱼,发现有80%的雄性鱼出现雌性化特征,它们的精巢中出现未成熟的鱼卵,原因也是因为避孕药、化妆品。

当时,美国地质学调查报告指出,“我们需要立马把河道里的化学有害物质清理干净。”此外,该研究团队还呼吁政府让医药公司生产更好处理的药物,加大技术投入,从而淘汰掉激素干扰化合物。

责任编辑:穆启春 CN063
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