The study on morphological and anatomic observation of Polydora ciliata
凿贝才女虫形态与结构观察

The morphological and anatomic characterization of Polydora ciliata was described by the histological and electron microscopy. The purpose of the study was to accumulate more material for the taxonomy of polychaeta. The results showed that the notosetae, neurosetae and setae on the parapodium formed a ring around the body. P. ciliata had a modified fifth chaetiger (chaetae-bearing segment) with specialized chaetae. The body structure of P. ciliata was relatively simple insects mainly by skin, muscle layer, and the digestive system. A large number of gland cells were concentrated in glandular fields situated in the skin. The muscle system was highly developed. The muscular parapodium could facilitate their locomotion.