科學家發現控制蚊子數量新方法
文章來源:未知 文章作者:enread 發布時間:2019-07-30 08:20 字體: [ ]  進入論壇
(單詞翻譯:雙擊或拖選)
Chinese scientists have developed a new method to control the population of mosquitoes, the Science and Technology Daily reported Monday.
 
《科技日報》周一報道,中國科學家發現一種控制蚊子數量的新方法。
 
Scientists from the Sun Yat-Sen University have conducted a four-year field test in controlling the population of the Asian tiger mosquito (Aedes albopictus), one of the world's most invasive mosquito species that carries dengue, the Zika virus and many other devastating1 diseases.
 
Through microinjection and radiation, scientists sterilized2 male mosquitoes and released them into the environment to mate with wild female mosquitoes, resulting in no offspring and a declining population over time. They also exposed male mosquitoes to a strain of Wolbachia bacteria, which rendered the females sterile3.
 
With this method, the mosquito population has been almost eliminated in the field test, with the annual number of wild mosquito species decreasing by about 83 to 94 percent. No mosquitoes were detected for up to six weeks.
 
The research was published in the journal Nature.
 
This successful field trial demonstrated that the technique could be used to establish a protected area free of mosquito-borne disease and mosquito harassment4, the report cited Xi Zhiyong, the leading researcher as saying.


點擊收聽單詞發音收聽單詞發音  

1 devastating muOzlG     
adj.毀滅性的,令人震驚的,強有力的
參考例句:
  • It is the most devastating storm in 20 years.這是20年來破壞性最大的風暴。
  • Affairs do have a devastating effect on marriages.婚外情確實會對婚姻造成毀滅性的影響。
2 sterilized 076c787b7497ea77bc28e91a6612edc3     
v.消毒( sterilize的過去式和過去分詞 );使無菌;使失去生育能力;使絕育
參考例句:
  • My wife was sterilized after the birth of her fourth child. 我妻子生完第4個孩子后做了絕育手術。 來自辭典例句
  • All surgical instruments must be sterilized before use. 所有的外科手術器械在使用之前,必須消毒。 來自辭典例句
3 sterile orNyQ     
adj.不毛的,不孕的,無菌的,枯燥的,貧瘠的
參考例句:
  • This top fits over the bottle and keeps the teat sterile.這個蓋子嚴實地蓋在奶瓶上,保持奶嘴無菌。
  • The farmers turned the sterile land into high fields.農民們把不毛之地變成了高產田。
4 harassment weNxI     
n.騷擾,擾亂,煩惱,煩亂
參考例句:
  • She often got telephone harassment at night these days.這些天她經常在夜晚受到電話騷擾。
  • The company prohibits any form of harassment.公司禁止任何形式的騷擾行為。
發表評論
請自覺遵守互聯網相關的政策法規,嚴禁發布色情、暴力、反動的言論。
評價:
表情:
驗證碼:點擊我更換圖片