Korean J Parasitol.  2013 Feb;51(1):55-59. 10.3347/kjp.2013.51.1.55.

Genetic Diversity of Taenia asiatica from Thailand and Other Geographical Locations as Revealed by Cytochrome c Oxidase Subunit 1 Sequences

• Anantaphruti MT
• Thaenkham
• Watthanakulpanich D
• Phuphisut
• Maipanich
• Yoonuan T
• Nuamtanong S
• Pubampen S
• Sanguankiat S

• KMID: 1501810
• DOI: http://doi.org/10.3347/kjp.2013.51.1.55

Abstract

Twelve 924 bp cytochrome c oxidase subunit 1 (cox1) mitochondrial DNA sequences from Taenia asiatica isolates from Thailand were aligned and compared with multiple sequence isolates from Thailand and 6 other countries from the GenBank database. The genetic divergence of T. asiatica was also compared with Taenia saginata database sequences from 6 different countries in Asia, including Thailand, and 3 countries from other continents. The results showed that there were minor genetic variations within T. asiatica species, while high intraspecies variation was found in T. saginata. There were only 2 haplotypes and 1 polymorphic site found in T. asiatica, but 8 haplotypes and 9 polymorphic sites in T. saginata. Haplotype diversity was very low, 0.067, in T. asiatica and high, 0.700, in T. saginata. The very low genetic diversity suggested that T. asiatica may be at a risk due to the loss of potential adaptive alleles, resulting in reduced viability and decreased responses to environmental changes, which may endanger the species.

Keyword

Taenia asiatica; Taenia saginata; cox1 gene; genetic diversity; Thailand; different geographical location

MeSH Terms

Animals
Asia/epidemiology
Cluster Analysis
Electron Transport Complex IV/*genetics
*Genetic Variation
Genotype
Humans
Molecular Sequence Data
*Phylogeography
Protein Subunits/genetics
Sequence Analysis, DNA
Taenia/*classification/*genetics/isolation & purification
Taeniasis/*epidemiology/*parasitology
Protein Subunits
Electron Transport Complex IV