沙夫说:“如果能先测试蟑螂,然后挑选耐药性弱的杀虫剂,那就增加了杀灭几率。”
'But even then, we had trouble controlling populations.'
“但是即便如此,我们也很难控制蟑螂的数量。”
The team says it was able to keep the roach populations stable during the study period, but could not make a significant dent in their numbers.
研究小组称,在研究期间蟑螂数量能够维持稳定,但无法大幅减少。
With the two-insecticide mixture, the pests even appeared to thrive.
在使用了两种杀虫剂的混合物之后,蟑螂数量甚至增加了。
One of the single-insecticide experiments suggested the population was at first vulnerable to the method, and in that case they were able to mostly wipe them out. But, in another trial with 10 percent starting resistance, the population grew despite treatment.
其中一项单一杀虫剂试验表明,蟑螂起初对此很敏感,在这种情况下,大多数蟑螂基本上都被杀灭了。但是,在另一项耐药性达到10%的试验中,尽管使用了杀虫剂,蟑螂数量还是增加了。
Surviving roaches then led to more resistant offspring.
幸存下来的蟑螂会生育出耐药性更强的后代。
'We would see resistance increase four- or six-fold in just one generation,' Scharf said.
沙夫说:“我们发现,耐药性在仅仅一代之内就增加了4到6倍。”
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2020-09-15
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