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Researches on Pseudophyllidea (Carus, 1813) in the south of Chile. IV Occurrence of Diphyllobothrium dendriticum (Nitzch)

Published online by Cambridge University Press:  18 November 2009

Patricio Torres
Affiliation:
Institute of Parasitology
René Franjola
Affiliation:
Institute of Parasitology
Luis Figueroa
Affiliation:
Institute of Parasitology
Roberto Schlatter
Affiliation:
Institute of Zoology
Héctor González
Affiliation:
Institute of Pathology, Universidad Austral de Chile, Valdivia, Chile;
Boris Contreras
Affiliation:
Pisciculture of Pullinque, Calafquen, Chile
Rodolgo Martin
Affiliation:
Institute of Pathology, Universidad Austral de Chile, Valdivia, Chile;

Abstract

Experimental infections were established with Diphyllobothrium sp. plerocercoids obtained from Salmo gairdneri. a fish introduced at the beginning of the 1900s in the lake region of Chile. These permitted us to obtain adult parasites in Larus dominicanus and Canis familiaris.

The histological features of the plerocercoids, their relation to the host, adult pattern and susceptibility of hosts allowed us to determine the presence of Diphyllobothrium dendriticum (Nitzch) for the first time in South America in the lacustrine region of southern Chile.

It is believed that this cestode was introduced to this ecosystem by infected persons travelling from North America or Europe or, alternatively, brought by migratory birds, e.g., Sterna hirundo, S. paradisea or Larus pipixcan on their winter visits to South America.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1981

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