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

Full 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.

Author information

Author/s: Cruz-Reyes, A (A); Constantine, C C (CC); Boxell, A C (AC); Hobbs, R P (RP); Thompson, R C A (RC);

Affiliation: Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Ap. Postal 70-153, C. P. 04510, Mexico.

Journal and publication information

Publication Type: Journal Article

Journal: Journal of helminthology (J Helminthol), published in England. (Language: eng)

Reference: 2007-Sep; vol 81 (issue 3) : pp 287-92

Dates: Created 2007/09/18; Completed 2008/03/14;

PMID: 17640396, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

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