笔者近几年在诊治鱼病时,发现以前几乎绝迹的舌状绦虫病时有发生,且呈流行趋势。究其原因,由于生态环境保护措施得力,使鸟类数量得以恢复,有些鸟类不仅直接捕食鱼类,而且还是鱼类寄生虫的终寄主,虫卵随鸟的粪便落到水体中,造成鱼病暴发,对养鱼危害很大。舌状绦虫终寄主就是鸥鸟 In recent years, the author in the diagnosis and treatment of fish diseases, found that before almost disappeared tongue taeniasis occur, and the trend. The reason for this is that due to the effective ecological and environmental protection measures, the number of birds can be restored. Some birds not only directly feed on fish, but also the final host of fish parasites. The eggs drop into the water with birds’ feces, resulting in fish Disease outbreaks, a great harm to fish farming. The final host of tongue-shaped tapeworms is the gull bird