On the morphology and life-history of Stephanostomum caducum (Looss 1901) Manter 1934 (Trematoda, Acanthocolpidae)

Koie, M.

Ophelia 171: 121-133


ISSN/ISBN: 0078-5326
DOI: 10.1080/00785326.1978.10425476
Accession: 000710715

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The cercaria of Stephanostomum caducum develops in redia in Natica alderi. It is ocelate and has 2 alternating rows of oral spines and a stylet. The distal part of the tail is invaginable and functions as a sucker. The cercaria is probably identical with Cercaria obtusicaudata. Cercariae encyst below the epidermis of the mouth of gobiid fish. The metacercariae have 24 or 25 oral spines in each of 2 rows. S. caducum developed in the pyloric caeca of cod fed on experimentally infected gobies. Cod, Gadus morhua, is the natural final host for S. caducum in Danish waters. The different developmental stages were studied by scanning electron microscopy and are described. [AS].