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KMID : 0425120130510010055
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Parasites, Hosts and Diseases
2013 Volume.51 No. 1 p.55 ~ p.59
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Genetic Diversity of Taenia asiatica from Thailand and Other Geographical Locations as Revealed by Cytochrome c Oxidase Subunit 1 Sequences
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Anantaphruti Malinee Thairungroj
Thaenkham Urusa
Watthanakulpanich Dorn
Phuphisut Orawan
Maipanich Wanna
Yoonuan Tippayarat
Nuamtanong Supaporn
Pubampen Somjit
Sanguankiat Surapol
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Abstract
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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.
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KEYWORD
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Taenia asiatica, Taenia saginata, cox1 gene, genetic diversity, Thailand, different geographical location
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