Dynamic Ultrastructural Changes of Scolex on Cysticercus Pisiformis

摘要

In order to research the ultra-morphological changes of scolex of cysticercus pisiformis during the relative rest and motion states.the ultrastructure changes of scolex located in cyst and evaginated from cyst after cultivation were comparatively observed by scanning electron microscope.The results showed that,when the scolex was in the relative rest states,from the top observed,the rostellum with the tegument muscular column that connected to tooth-hook looked like the umbrella and covered on the front end of the scolex.Viewed from the side of the scolex,the tooth-hook on the rostellum lookecl like the antler branch and had only one row.Four suckers looked like cavities were located in the back of the rostellum and distributed around the scolex in the equidistance.When the scolex was in the motion states,the tegument muscular column on the rostellum contracted.the antler-like tooth-hook extended to periphery,and the sucker also made the ring-like and longituclinal-like contraction.In brief,ultrastructure of the scolex of cysticercus pisiformis had apparent changes during relative rest and motion states.Those changes were ahle to help the invasiveness of the scolex to the host tissue.