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目的调查某民航机场食品厂面粉库有无热带无爪螨孳生,观察热带无爪螨的形态结构特征。方法采集该机场食品厂面粉库的面粉样本,用直接镜检法分离其中孳生的热带无爪螨,并制作玻片标本,于光学显微镜下观察鉴定。结果于采集的面粉样本中发现了热带无爪螨雌成螨,镜下可见该螨近似球形,无背板,足无爪。表皮内突Ⅰ发达,于中线处相连。生殖孔位于足Ⅲ~Ⅳ水平,被一对斜生的生殖褶覆盖。足Ⅲ、Ⅳ无感棒。交配囊呈长而稍弯并逐渐变细的管状结构,伸出螨体末端。结论某民航食品厂面粉库厂中发现了热带无爪螨,该螨主要鉴别特征为无背板,足无栉齿状亚跗鳞片和爪;足Ⅰ膝节仅有1根感棒,且足Ⅲ、Ⅳ无感棒。
Objective To investigate whether there is tropical claw mite breeding in a food airport flour mill of Civil Aviation Airport and to observe the morphological characteristics of tropical claw mite. Methods Flour samples from flour mills of the airport food factory were collected, and the tropical mites without claws were isolated by direct microscopy. Slides were made and observed under optical microscope. Results Female mites were found in the collected flour samples. The mites were almost spherical in shape and had no backplate and no claws. Epidermal protrusion Ⅰ developed, connected at the midline. Reproductive holes located in the foot Ⅲ ~ Ⅳ level, was covered by a pair of oblique reproductive fold. Feet Ⅲ, Ⅳ no sense of stick. The mating capsule is long and slightly curved and tapered tubular structure, extending the end of the mite body. Conclusions A tropical clawed mite was found in the flour factory of a civil aviation food factory. The main distinguishing feature of the mite is that it has no backplate and no pods and claws. The foot knee has only one sensation stick and foot Ⅲ, Ⅳ no sense of stick.