Fish Pathology
Online ISSN : 1881-7335
Print ISSN : 0388-788X
ISSN-L : 0388-788X
A New Species of Marine Cercaria Cercaria itoi sp. nov. from the Spindle Shell Fusinus perplexus from Kanagawa Prefecture, Japan
Shigeru SHIMURA
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1984 Volume 18 Issue 4 Pages 179-183

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Abstract

A new species of marine cercaria, possibly belonging to the family Acanthocolpidae, was found in the digestive gland of the spindle shell Fusinus perplexus and the specific name Cercaria itoi is proposed. C. itoi is a distome and biocellate cercaria with a long simple tail, five pairs of penetration gland cells, I-shaped excretory vesicle, 66 flame cells on each side and peculiar structures of comma- to sausage-shaped minute bodies, probably cystogenous glands, filled in the hindbody posterior to the acetabulum. The cercaria develops in redia, but its maturation of the cercaria occurs in the digestive gland of the host, after the immature cercariae leave the redia.

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© The Japanese Society of Fish Pathology
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