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Monophyly of marsupial intraerythrocytic apicomplexan parasites from South America and Australia

Published online by Cambridge University Press:  03 September 2009

SANTIAGO MERINO
Affiliation:
Departamento de Ecología Evolutiva, Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas (CSIC), José Gutiérrez Abascal 2, E-28006 Madrid, Spain
JAVIER MARTÍNEZ
Affiliation:
Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Alcalá, Alcalá de Henares, E-28871, Madrid, Spain
RODRIGO A. VÁSQUEZ
Affiliation:
Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile
JAN ŠLAPETA*
Affiliation:
Faculty of Veterinary Science, University of Sydney, New South Wales 2006, Australia
*
*Corresponding author: Faculty of Veterinary Science, University of Sydney, New South Wales 2006, Australia. Tel: +61 2 9351 2025. Fax: +61 2 9351 7348. E-mail: jslapeta@usyd.edu.au

Summary

Intraerythrocytic parasites (Apicomplexa: Sarcocystidae) of the South American mouse opossum (Thylamys elegans) from Chile, South America, and of the yellow-bellied glider (Petaurus australis) from Australia were found to be monophyletic using SSU rDNA and partial LSU rDNA sequences. Phylogenetic reconstruction placed both species within the family Sarcocystidae. These intraerythrocytic parasites of marsupials represent an as yet unnamed genus predicted to have bisporocystic oocysts and tetrazoic sporocysts, which is a characteristic feature of all members of the family Sarcocystidae. These results show that erythrocytic parasites share a common ancestor and suggest co-evolution with their vertebrate host.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2009

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