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Echinococcus granulosus from Mexican pigs is the same strain as that in Polish pigs

Published online by Cambridge University Press:  01 September 2007

A. Cruz-Reyes ,
C.C. Constantine ,
A.C. Boxell ,
R.P. Hobbs  and
R.C.A. Thompson
A. Cruz-Reyes
Affiliation:
Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Ap. Postal 70-153, C. P. 04510, Mexico
C.C. Constantine
Affiliation:
Division of Genetics and Bioinformatics, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3050, Australia
A.C. Boxell
Affiliation:
World Health Organisation Collaborating Centre for the Molecular Epidemiology of Parasitic Infections, School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
R.P. Hobbs
Affiliation:
World Health Organisation Collaborating Centre for the Molecular Epidemiology of Parasitic Infections, School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
R.C.A. Thompson*
Affiliation:
World Health Organisation Collaborating Centre for the Molecular Epidemiology of Parasitic Infections, School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
*
*Fax: +61 89310 4144 E-mail: a.thompson@murdoch.edu.au
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Abstract

Samples of Echinococcus granulosus from seven pigs from Mexico were compared with isolates of the parasite from pigs in Poland and representative strains and species of Echinococcus. Isolates from pigs in Mexico were found to be genetically identical to E. granulosus from Polish pigs and distinct from other major genotypes by sequencing part of the mitochondrial cytochrome c oxidase I (COI) mtDNA locus, restriction fragment length polymorphism (RFLP) of the polymerase chain reaction (PCR) amplified rDNA internal transcribed spacer (ITS) 1 using five different enzymes, and random amplified polymorphic DNA (RAPD) analysis. These results were complemented by data on hook morphology and together strengthen the view that Echinococcus maintained in a cycle involving pigs and dogs is a distinct strain that is conserved genetically in different geographical areas. The present study supports the close relationship of the cervid, camel and pig strains and raises the question of their taxonomic status.

Type
Research Papers
Information
Journal of Helminthology , Volume 81 , Issue 3 , September 2007 , pp. 287 - 292
Copyright
Copyright © Cambridge University Press 2007

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