鳗类，鳗：无颚的各种原始水生圆口纲脊椎动物中的一种，包括七鳃鳗和盲鳗。
Any of various primitive aquatic vertebrates of the class Cyclostomata, lacking jaws and including the lampreys and hagfishes.
携带肺吸虫尾蚴的淡水螺类拟钉螺亚科一新种（前鳃亚纲；中腹足目；圆口螺科；拟钉螺亚科）
A new species of the Triculinae of freshwater snails thatharbours cercariae of lung flukes from Fujian, China;
七鳃鳗隶属于圆口纲，是一类因营半寄生生活而引发机体显著特化的动物。
A commensal organism, especially an insect that lives in the nest or burrow of another species.
七鳃鳗隶属于圆口纲，是一类因营半寄生生活而引发机体显著特化的动物。
A commensal organism, especially an insect that lives in the nest or burrow of another species.
应用推荐