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1 February 2008 Sequence Analysis of Ribosomal and Mitochondrial Genes of the Giant Liver Fluke Fascioloides magna (Trematoda: Fasciolidae): Intraspecific Variation and Differentiation from Fasciola hepatica
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Abstract
Complete sequences of ribosomal and mitochondrial genes of the giant liver fluke Fascioloides magna are presented. In particular, small subunit (18S) and internal transcribed spacers (ITS1 and ITS2) of the ribosomal gene (rDNA), as well as cytochrome c oxidase subunit I (cox1) and nicotinamide dehydrogenase subunit I (nad1) of the mitochondrial DNA (mtDNA), were analyzed. The 18S and ITS sequences were compared with previously published sequences of the liver fluke Fasciola hepatica. Fixed interspecific genetic differences were determined that allow molecular differentiation of F. magna and F. hepatica using either the PCR-RFLP method or PCR amplification of species-specific DNA regions. Additionally, intraspecific sequence polymorphism of the complete cox1 and nad1 mitochondrial genes in geographically distinct F. magna populations was determined. Based on the sequence divergences, short (<500 bp) variable regions suitable for broader biogeographical studies of giant liver fluke were designed.
Ivica Králová-Hromadová, Marta Špakulová, Eva Horáčková, Ludmila Turčeková, Adam Novobilský, Relja Beck, Břetislav Koudela, Albert Marinculić, Dušan Rajský and Margo Pybus "Sequence Analysis of Ribosomal and Mitochondrial Genes of the Giant Liver Fluke Fascioloides magna (Trematoda: Fasciolidae): Intraspecific Variation and Differentiation from Fasciola hepatica," Journal of Parasitology 94(1), (1 February 2008). https://doi.org/10.1645/GE-1324.1
Received: 16 May 2007; Accepted: 1 July 2007; Published: 1 February 2008
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