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Some observations on the redia, cercaria and metacercaria of Opisthodiscus nigrivasis (v. Mehlij, 1929) Odening, 1959 (Trematoda: Paramphistomidae)

Published online by Cambridge University Press:  05 June 2009

F. Simon-Vicente ,
A. Martinez-Fernandez  and
M. Cordero Del Campillo
F. Simon-Vicente
Affiliation:
Centro de Edafologia y Biologia Aplicada (C.S.I.C.), SalamancaVeterinary Faculty, University of Oviedo, Leon, Spain Faculty of Pharmacy, Santiago de Composteta
A. Martinez-Fernandez
Affiliation:
Centro de Edafologia y Biologia Aplicada (C.S.I.C.), SalamancaVeterinary Faculty, University of Oviedo, Leon, Spain Faculty of Pharmacy, Santiago de Composteta
M. Cordero Del Campillo
Affiliation:
Centro de Edafologia y Biologia Aplicada (C.S.I.C.), SalamancaVeterinary Faculty, University of Oviedo, Leon, Spain Faculty of Pharmacy, Santiago de Composteta
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Abstract

The redia, cercaria and metacercaria of Opisthodiscus nigrivasis from Ancylastrum fluviatilis are described. Observations were made on the behaviour of the cercaria and experimental infections with metacercariae have been carried out in laboratory-raised frogs of the species Rana ridibunda. Some features of the morphology of these juvenile stages and aspects of the behaviour of the cercaria are compared with those of others related species.

The best known biological cycles in the Diplodiscinae are those of Diplodiscus subclavatus (Pallas, 1970) Diesing, 1836, and Megalodiscus temperatus (Stafford, 1905) Hanvood, 1932. The first was described by Looss (1892), who showed that the molluscs Planorbis nitidus, Pl. vortex, Pl. rotundatus, Pl. spirorbis and Pl. contortus acted as intermediate hosts. More recently Milka (1970) found young forms of D. subclavatus in Pl. planorbis and gave a brief description of the redia and cercaria of this species.

Type
Research Article
Information
Journal of Helminthology , Volume 48 , Issue 3 , September 1974 , pp. 187 - 193
Copyright
Copyright © Cambridge University Press 1974

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