英国的研究人员发明了一种不危害环境的控制昆虫群的遗传技术,该技术还省去了绝育和昂贵的分类过程。这个用果蝇试验成功的技术将来某一天也许会用于对付商业上更重要的害虫或携带疾病的昆虫。现有的方法首先要繁殖不育昆虫,然后将雄性与雌性分离后,将雄性释放到自然种群中与野生雄性相互竞争,吸引雌性,经过几代繁殖逐步降低种群的数量。英国一个科研小组的新方法是,让果蝇携带一个致命的、与性別有关的基因系统,只要在果蝇的食物中做一些 British researchers have invented a genetic technique that does not harm the environment to control insect populations, and it also eliminates the need for sterilization and expensive sorting. One technique that is successful in testing fruit flies may one day be used to deal with more commercially important or disease-carrying insects. Existing methods first breed infertile insects, then separate the male from the female, release the male into a natural population and compete with the wild male to attract the female, and gradually reduce the number of the population after several generations of breeding. A new research team in the UK has adopted a new approach that allows fruit flies to carry a fatal, gender-related genetic system by doing something in the flies’ food