Objective: To investigate the species of Cheyletoidea mites breeding in the culture environment of Eupolyphaga sinensis and to observe the morphology of Eucheyletia reticulata Cunliffe.
Methods: The soil samples from an E. sinensis farm in northern Anhui were collected. The mites in the soil samples were separated directly under a microscope and the glass specimens were made to observe the morphological feature of the mites under a light microscope, then the mites species were identified and classified based on the morphological characteristics.
Results: In the culture soil of E. sinensis, totally 7 kinds of Cheyletoidea mites were isolated, namely Eucheyletia reticulata Cunliffe, Cheyletus eruditus Schrank, Cheyletus malaccensis Oudemans, Cheyletus troussarti Oudemans, Cheyletus aveisor Rohdendorz, Acaropsis sollers Rohdendorz and Cheletomorpha lepidopterorum Shaw. They belonged to genera Eucheyletia, Cheletomorpha, Acaropsis and Cheyletus of Cheyletidae Leach family. The Eucheyletia reticulata Cunliffe was firstly found in the culture environment of E. sinensis, and its gnathosoma was large, the pedipalpal femurs were expanding and there were two strips of comb hair and two smooth bristles on the pedipalpal tarsus, and the back of the body was covered with two pieces of tergum, which were decorated with reticular pattern. The body and foot setae were fan-shape.
Conclusions: There are various of Cheyletoidea mites found in the breeding environment of E. sinensis. These mites are important species for pest control in the culture environments of E. sinensis. Related measures should be taken to prevent the excessive growth of Cheyletoidea mites, so as to avoid the adverse effects on the quality and quantity of E. sinensis.
［摘要］目的 调查地鳖虫养殖环境中孳生的肉食螨种类, 观察网真扇毛螨的形态特征。方法 采集皖北地区某地鳖 虫养殖场的养殖土标本, 采用直接镜检法分离其中的肉食螨并制成玻片标本, 光镜下观察螨的形态特征, 并依据形态特 征进行螨种鉴定与分类。结果 在地鳖虫养殖土标本中共分离到7种肉食螨, 分别为网真扇毛螨、普通肉食螨、马六甲 肉食螨、特氏肉食螨、转开肉食螨、阳罩单梳螨和鳞翅触足螨。此7种肉食螨分别隶属于肉食螨科中的真扇毛螨属、肉食 螨属、单梳螨属和触足螨属。本调查首次在地鳖虫养殖环境中发现了网真扇毛螨, 其颚体较大, 须肢股节膨大, 跗节有2 条梳状毛和2条光滑的刚毛; 躯体背面由两块背板覆盖并饰有网状花纹, 躯体及足上刚毛呈扇状。结论 地鳖虫养殖环 境中孳生多种肉食螨, 此类螨是地鳖虫养殖环境中害螨防制的重要物种, 应采取相关措施预防因肉食螨类过度孳生而对 地鳖虫品质和数量所致的不良影响。.
Keywords: Breeding; Cheyletoidea mites; Culture environment; Eucheyletia reticulata Cunliffe; Eupolyphaga sinensis; Morphological observation.