Scanning structure of spermatozoon of Moniezia expansa (Cyclophyllidea: Anoplocephalidae)

摘要

Surface structure of spermatozoon of cestoda Moniezia expansa was observed by using scanning electron microscopy. The mature spermatozoon of Moniezia expansa was filiform, tapered at both ends at lower magnification. Under high magnification, its surface structure was rope-like, caused by 25 to 45 degree spiral cortical microtubules around the sperm axis. Diversity of mature spermatozoa of cestoda in the Order Cyclophyllidea was discussed [ Acta Zoologica Sinica 52(2): 424– 428, 2006].