Hormonal regulation of thrips' molting and metamorphosis

蓟马属于半代谢物种，从幼虫直接发育到成虫，但在幼虫和成虫之间有静止和不取食的阶段，称为亲、蛹。因此，蓟马的变态方式与其他半变态或全变态物种有很大不同。激素调节蓟马变态的机制尚未得到研究。在这项研究中，我们分离了编码两个转录因子的cDNA，这两个转录因子参与了两种蓟马的保幼激素信号传递。根据这项研究的结果，我们推测了蓟马的变态是如何进化的。

Thrips are classified as one of the hemimetabolous species that develop directly from larva to adult, but there are quiescent and non-feeding stages called propupa and pupa between larval and adult stages. Thus, the manner of thrips' metamorphosis is quite different from other hemimetabolous or holometabolous species. The mechanism how thrips' metamorphosis is regulated by hormones has not yet been investigated. In this study, we isolated cDNAs encoding two transcription factors involved in juvenile hormone signaling in two thrips species. From the results of this study, we speculated how thrips' metamorphosis has evolved.