蟑螂进化迅速，近乎无敌！

蟑螂进化得“近乎无敌”，“对人类构成严重威胁”

Researchers warn cockroaches are evolving to be "almost impossible to kill" with chemicals, bringing them "closer to invincibility" and posing "serious threats to human health".

研究人员警告，蟑螂正在进化成“几乎不可能被化学物质杀死”，使它们“更接近无敌”，并对“人类健康构成严重威胁”。

A new study published in the journal Scientific Reports has found that German cockroaches, the most common cockroach species in the world, quickly developed an immunity to several different insecticides.

发表在《科学报告》(Scientific Reports)杂志上的一项新研究发现，世界上最常见的蟑螂品种——德国蟑螂，对几种不同的杀虫剂迅速产生了免疫力。

"This is a previously unrealized challenge in cockroaches," says Purdue University professor Michael Scharf.

普渡大学教授迈克尔·沙夫说:“这是蟑螂面临的一个前所未有的挑战。”

"Cockroaches developing resistance to multiple classes of insecticides at once will make controlling these pests almost impossible with chemicals alone."

“蟑螂对多种杀虫剂同时产生抗药性，这使得仅靠化学药品几乎无法控制这些害虫。”

Cockroaches are "serious threats to human health", carrying dozens of types of bacteria including E. coli and salmonella. Their saliva, faeces and body parts can also trigger allergies and asthma and sicken children.

蟑螂“对人类健康构成严重威胁”，自身携带包括大肠杆菌、沙门氏菌等几十种细菌，同时它们的唾液、粪便和身体部位也会引发过敏、哮喘和儿童疾病。

The researchers tested three different insecticides on roach populations over six months, then surveyed the survivors. To their horror, they found all the insecticides were "mostly ineffective", with cockroach populations remaining stable or flourishing as resistance was passed down through the generations.

研究人员在六个月的时间里对蟑螂种群测试了三种不同的杀虫剂，然后调查了存活下来的蟑螂。令他们震惊的是，他们发现所有的杀虫剂“大多无效”，通过遗传的抗药性，他们的种群继续保持稳定和繁荣。

"We would see resistance increase four- or six-fold in just one generation," Scharf say. "We didn't have a clue that something like that could happen this fast."

沙夫说:“我们发现，蟑螂的抗药性经过一代的迭代，会增加四到六倍。”“我们没想到这样的事情会发生得这么快。”

Their results have dramatic implications for pest controllers, who often combine different insecticides to make sure they're killing bugs that might have developed an immunity to one kind.

他们的研究结果对害虫控制者有着重大的意义，害虫控制者经常将不同的杀虫剂结合在一起，以确保杀死可能对一种杀虫剂产生免疫力的昆虫。

Scharf recoments pest controllers combine chemical treatments with traps, improved sanitation and vacuums that can remove cockroaches.

沙夫建议害虫控制者将化学处理与诱捕、改善卫生条件和真空吸尘器结合起来，以更好的消灭蟑螂。

"Some of these methods are more expensive than using only insecticides, but if those insecticides aren't going to control or eliminate a population, you're just throwing money away," he adds.

他补充说:“其中一些方法比只使用杀虫剂更昂贵，但如果这些杀虫剂不能控制或消灭一个种群，你就是在浪费钱。”

"Combining several methods will be the most effective way to eliminate cockroaches."

“多种方法的结合将是消除蟑螂最有效的方法。”