Redescription and life cycle of Gangesia parasiluri (Cestoda: Proteocephalidae), a parasite of the Far Eastern catfish Silurus asotus
1999
Shimuzu, T. (Nagano Prefectural College (Japan))
Gangesia parasiluri (Cestoda: Proteocephalidae) is redescribed on the basis of adults obtained from the intestine of Silurus asotus from Lake Suwa, Japan. Plerocercoids were found in the rectum of Chaenogobius urotaenia and Rhinogobius brunneus. Procercoids were formed in the haemocoel of Mesocyclops leuckarti (Copepoda: Cyclopidae) 7 days post infection at 21-25 deg C. They developed into plerocercoids in the intestine of Pseudorasbora pumila pumila, R. brunneus and S asotus. It is considered that the life cycle involves three hosts: a copepod as the intermediate host in which procercoids are formed, small fish as paratenic hosts which retain plerocercoids and transport them into S. asotus, and S. asotus as the definitive host in which adults develop.
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