粉尘螨消化系统的形态学观察

光镜下观察了粉尘螨Dermatophagoides farinae消化系统结构，其组成包括：口前腔、前肠、中肠、后肠、肛门和唾液腺。口前腔由颚体围绕而成；前肠包括一个肌肉的咽和食道，食道从脑中穿过；中肠分为前中肠（包括一对盲肠）和后中肠，中肠的上皮细胞呈现多种形态； 后肠包括相对大的结肠和狭窄的直肠；消化腺为不规则形，位于脑前方。本文阐述了消化道的分支情况、显微结构及细胞形态。

Morphology of the digestive system in Dermatophagoides farinae (Hughes)(Acariformes: Pyroglyphidae)

The digestive system of Dermatophagoides farinae (Hughes) was dissected and observed with light microscopy. The results show that the digestive system consists of prebuccal cavity, foregut, midgut, hindgut, anus and salivary gland. The prebuccal cavity is surrounded by gnathosoma; the foregut consists of a muscular pharynx and an esophagus which extends through the brain; the midgut is divided into the anterior midgut with a pair of caeca and the posterior midgut; the hindgut consists of a relative broad colon and a narrow rectum; the salivary gland is irregular in shape and located in the front of the brain. The ramus, configuration and dermal cell types of the alimentary canal were described.