Sheena P, Manjula K T, Subair K T, Janardanan K P
Department of Zoology, University Of Calicut, Kerala 673 635, India.
Parasitol Res. 2007 Sep;101(4):1015-8. doi: 10.1007/s00436-007-0579-7. Epub 2007 May 20.
The life cycle of the cyathocotylid fluke, Mesostephanus indicum Mehra, 1947 infecting the pariah kite, Milvus migrans govinda (Accipitridae), is elucidated. The species, reported by Mehra (Proc Nat Acad Sci India 17:1-52, 1947) from Buteo rufinus rufinus (Accipitridae), was transferred to the genus Prohemistomum by Dubois (Rev Suiss de Zool 58:639-691, 1951). However, it is retained in the genus Mesostephanus because of the presence of vaginal sphincter and caudal appendage, which are the characters of the genus. Its first intermediate host is the gastropod snail, Bellamya bengalensis (Viviparidae), which released the furcocercous cercariae. The prohemistomulum-type metacercariae encysted in the muscle tissues of the freshwater fish Rasbora daniconius and Puntius sophore (Cyprinidae), Mystus malabaricus (Bagridae), Heteropneustes fossilis (Heteropneustidae), Aplocheilus lineatus (Cyprinodontidae), Etroplus maculatus and E. suratensis (Cichlidae), and Pseudosphromenus cupanus (Belontidae). Recovery of M. indicum from M. m. govinda forms a new host record, and this is the first report of the life cycle of the genus from India.
阐明了感染食腐鸢（Milvus migrans govinda，鹰科）的印度中杯吸虫（Mesostephanus indicum Mehra，1947）的生命周期。该物种由Mehra（《印度国家科学院学报》17:1 - 52，1947）从棕尾鵟（Buteo rufinus rufinus，鹰科）中报道，Dubois（《瑞士动物学杂志》58:639 - 691，1951）将其转移到前半口属（Prohemistomum）。然而，由于存在阴道括约肌和尾附器，这是该属的特征，所以它仍保留在中杯属（Mesostephanus）。其第一中间宿主是腹足纲蜗牛孟加拉环棱螺（Bellamya bengalensis，胎螺科），该蜗牛释放出叉尾尾蚴。前半口型囊蚴寄生于淡水鱼丹氏波鱼（Rasbora daniconius）、苏氏无须魮（Puntius sophore，鲤科）、斑纹鳠（Mystus malabaricus，鲿科）、黄黝鱼（Heteropneustes fossilis，鲇科）、线纹单唇鳉（Aplocheilus lineatus，鳉科）、黑点尖塘鳢（Etroplus maculatus）和苏拉威西尖塘鳢（E. suratensis，丽鱼科）以及圆尾斗鱼（Pseudosphromenus cupanus，斗鱼科）的肌肉组织中。从食腐鸢指名亚种（M. m. govinda）体内发现印度中杯吸虫形成了一个新的宿主记录，这是该属生命周期在印度的首次报道。
