害嗜鳞螨休眠体光镜下形态观察

Morphological observation on hypopus of Lepidoglyphus destructor by optical microscope

目的观察害嗜鳞螨休眠体形态特征,丰富螨的生物学分类依据。方法 2016年9月于淮南某中药店采集燕麦样本10份,每份取10 g,用振筛分离法分离其中的螨,并分离出螨休眠体,制成常规玻片标本,置于光镜下观察其形态并鉴定。结果光镜下发现了害嗜鳞螨的第一若螨和休眠休。发现的害嗜鳞螨休眠体为不活动休眠体,呈无色卵圆形,背面有一条明显的横缝,无口器,足不发达,有2对生殖感觉器。结论观察到的害嗜鳞螨休眠体形态特征,可为该螨的生物学分类和防控提供科学依据。

Objective To observe the external morphology of Lepidoglyphus destructor hypopus under an optical microscope. Methods The samples were collected in a store of Chinese medicinal herbs in Huainan City in September,2016,the L. de-structor and the hypopus were isolated,and then made of slide specimens. The slide samples were prepared and observed under an optical microscope. Results The L. destructor hypopus and protonymph were found. The inactive hypopus was oval in shape, the feet were not well-developed,there was a distinct transverse seam on its back,and there were 2 pairs of genital sensory or-gans. Conclusion The optical microscopy shows the morphological characteristics of L. destructor hypopus,which can provide the basis for the biological classification and the prevention.