昆虫保幼激素和它们对昆虫发育的重要性被发现以后,农业科学工作者高兴地注意到利用这些激素防治害虫的可能性。以经典的内分泌学技术很容易证实保幼激素存在于昆虫整个幼虫生长期和成虫的生命中;而且很快表明这些激素在昆虫的幼虫和若虫期能阻止它们早熟发育,而对于成虫则是要它来促使卵巢发育。Williams 从惜古比天蚕,制备了第一个活性萃取物,并已证明该活性物质应用于昆虫蛹期能够阻碍成虫发育。蛹涂药处理后,即 After insect juvenile hormones and their importance to insect development were discovered, agricultural scientists were pleased to note the possibility of using these hormones to combat pests. Using classical endocrinology, it is easy to confirm that juvenile hormones are present throughout the larval growth and adult life of insects, and it is quickly shown that these hormones prevent their premature development in insect larvae and nymphs, It is to promote ovarian development. Williams developed the first active extract from Cibitane, and proved that the application of the active substance to the pupal stage of the insect can hinder adult development. After pupa coating treatment, that is