Abstract: The histological structures of the sluge worm Perinereis aibuhitensis was systemically observed by light microscopy.Results showed that the worm consists of body wall,parapodium,digestive and emunctory systems.The body walls comprise of parietal peritoneum of a simple squamous epithelium,smooth muscular layers including circular muscle,longitudinal muscle and diagonal muscle,epidermis of single-layered columnar cells containing gland cells and sense cells and horniness layers.The cuticle layer is a non-chitin albuminoid velum secreted from the epidermal cells.The epidermis of parapodium,consistent with body wall,contain capillary vessels,connective tissue,mucilage cells and blood corpuscles.During the period of gonad development,a large number of germ cells are found in the parapldium walls.The digestive system includes the digestive tract,which is a straight tube from the mouth to the anal,buccal cavity,pharynx,esophagus,stomach and intestines.and the digestive gland on both sides of the esophagus.The excretory system is made up of nephridium.
宋贞坪, 李霞, 王福景, 杨大佐, 周一兵. 双齿围沙蚕主要器官组织学的研究[J]. 大连海洋大学学报, 2010, 25(4): 320-323.
SONG Zhen-ping, LI Xia, WANG Fu-jing, YANG Da-zuo, ZHOU Yi-bing. Histological observation of the major organs of sluge worm Perinereis aibuhitensis. Journal of Dalian Ocean University, 2010, 25(4): 320-323.
2010, Vol. 25 
