Molecular Identification of Fasciola spp.
Isolated from Domestic Animals Based on DNA Sequencing of the
Nuclear Ribosomal ITS1 -ITS2 Markers, Kurdistan Region, Iraq
Ahmed B. Mohammed1, Wijdan M.S. Mero1,2* and
Chira A. Nerway1
1Department
of Biology, Faculty of Science, University of Zakho, Iraq 2Department
of Biology, College of Science, Nawroz University, Duhok, Iraq *Corresponding author: wijdan.mero@uoz.edu.krd
Abstract
Fascioliasis caused by Fasciola species (Fasciola
hepatica and Fasciola gigantica) is considered as the most important
helminthic infection of domestic animals in developing countries. The present
study was performed during January to December 2019, in Biology Department,
University of Zakho. Hundred adult’s flukes of Fasciola spp. were
isolated from bile ducts and gallbladder of cattle, sheep and goats slaughtered
at different abattoirs (Duhok, Zakho, Shelidiza, Aqrah and Bardarash) in Duhok
governorate, Kurdistan region, Iraq. Genomic DNA extraction was performed using
a Genomic DNA Extraction kit, Jena Bioscience GmbH (Germany). Specific markers
ITS1 and ITS2 ribosomal DNA were used for amplifying 480 and 550 bps fragments.DNA sequences have been used to
characterize these liver flukes. The PCR products were separated by
electrophoresis in 1.5% agarose gel, visualized by staining with RedSafe dye,
and photographed. ITS-1 and ITS-1 markers were amplified successfully, the
length of produced band for ITS-1 was 480 bp and for ITS-2 was 550 bp. Thirteen
Fasciola spp. flukes isolated from cattle, sheep and goats from different
districts were sequenced, from these
thirteen PCR products, 7 amplicons were recognized as Fasciola hepatica
and 6 amplicons as Fasciola gigantica. These sequences were deposited in GenBank under
accession numbers: MW161261, MW084365, MW052601 MW084349, MW082585, MW084348,
MW082830 for F. hepatica and
MW161260, MW052602, MW084353, MW084350, MW082589, MW085034 for F. gigantica.
This study confirms the prevalence of Fasciola
hepatica and Fasciola gigantica in Iraq by using the ITS-1 and ITS-2
rDNA.
To Cite This Article:
Mohammed AB, Mero WMS and Nerway CA, 2022.
Molecular identification of Fasciola spp. isolated from domestic animals
based on DNA sequencing of the nuclear ribosomal its1 -its2 markers, Kurdistan
Region, Iraq. Pak Vet J, 42(2): 246-250.
http://dx.doi.org/10.29261/pakvetj/2021.066