杀人蜂是1956年在巴西意外放出的一种杂交非洲蜂的后代,它现分布于拉丁美洲的一些国家,并已传入美国。杀人蜂比常见的欧洲蜜蜂要小,但是很凶猛,螫在人身上能长达半小时。据国外报道,截至1989年5月,已有350人被螫死。同时,杀人蜂给农业也带来很大的威胁。杀人蜂与蜜蜂长得相似,很容易杂交,因而美国农业部的专家担心,若这两种蜂杂交,其后代可能不再为农作物传粉。 Killer bees, descendants of a hybrid African bee accidentally released in Brazil in 1956, are now found in some Latin American countries and have been introduced to the United States. Killer bees are smaller than the common European bees, but fierce, and can last as long as half an hour in humans. According to foreign reports, as of May 1989, 350 people have been killed. At the same time, killer bees pose a great threat to agriculture. Killer bees are similar to bees and are easy to cross, so USDA experts fear that if the two bees cross, their offspring may no longer pollinate the crop.