Studies on the life history of Phyllodistomum mingensis sp. nov.
The egg and larval stages of P. mingensis n.sp. are described. The parasite occurs in the urinary bladder, ureter and intestine of the fish, Lateolabrax japonicus, in China. The cercariae develop in Corbicula fluminea and the 2nd intermediate hosts are Macrobrachium nipponensis and M. aspergills, commonly found in the Min river basin. The metacercariae are found among the gonads of these shrimps. The cercaria has a long, slender, transversely striated tail, approximately 3-4 times its body length (body 0.45 mm long) and lacks a tail bladder. In tail structure, this cercaria is unique within the genus. The flame-cell formula of the metacercaria is 2[(3+3)+(3+3+3)]=30. [From English summary.]