褐飞虱翅型分化的组织学研究

利用石蜡切片的方法，观察并比较了褐飞虱Nilaparvata lugens (Stal)长翅型和短翅型纯系各龄若虫及成虫的翅芽和间接飞行肌的发育情况。发现在4龄的第8h以后间接飞行肌就开始分化，长翅型若虫的间接飞行肌正常发育而短翅型若虫间接飞行肌的发育则被抑制。在5龄初始时方可明显观察到翅芽分化，短翅型若虫前翅芽细胞增殖速度明显慢于长翅型，并且其后翅芽停止发育。本文还比较了长翅型雌、雄性个体之间间接飞行肌的发育情况。

HISTOLOGICAL STUDY ON THE WING DIMORPHISM OF THE BROWN PLANTHOPPERNILAPARVATA LUGENS (STAL)

The developments of wing pads and indirect flight muscles (IFM) in themacropterous and the brachypterous brown planthopper Nilaparvata lugens (Stal)] were studied with paraffin method. The developmental differentiation of the IFMs occurred between the 8th and the 16th hour of the 4th nymphal instar, after which the IFMs of the macropterous nymph developed normally while the IFM development of thebrachypterous was suppressed. The wing pad developmental fferentiation was observed only at the 5th nymphal instar. The front wing pad cells of the brachypterous nymph proliferated slower than those of the macropterous and the development of hind wing pads of the rachypterous broke down. The wing dimorphism differentiation sensitive instar was inferred and compared between the male and female individuals.