初步调查了天津渤海湾几种虾蟹寄生复殖吸虫的状况 .其中日本大眼蟹 ( Macrophthalmusjaponicus)体内已发现有 2种吸虫囊蚴 ,经体外培养 ,获得一种微茎科成虫——后睾异类茎吸虫 ( Allomicrophalloidesopisthoorchis)和另一种隐孔科侧孔吸虫 ( Paragono sp.)的童虫 .此项研究发现了后睾异类茎吸虫的中间宿主 ,囊蚴的形态和新的囊蚴分布区 ,进一步描述了侧孔吸虫的囊蚴 ,童虫的形态及新的分布区 .度量单位 :mm. A preliminary investigation of several species of shrimp and crab parasites in the Bohai Bay in Tianjin has been carried out.Among them, 2 species of metacercariae have been found in Macrophthalmusjaponicus and cultured in vitro, Allomicrophalloides isischoorchis, and another Paragono sp. This study found the intermediate hosts, the metacercaria morphology and the new metacercariae distribution of the heterotrophic squamosomiasis , Further described the metacercariae larvae of metacercaria, the shape of the pest and the new distribution area. Units of measurement: mm.