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Genotypic relationships between Taenia saginata, Taenia asiatica and their hybrids

Published online by Cambridge University Press:  11 October 2013

KANAKO YAMANE ,
TETSUYA YANAGIDA ,
TIAOYING LI ,
XINGWANG CHEN ,
PARON DEKUMYOY ,
JITRA WAIKAGUL ,
AGATHE NKOUAWA ,
MINORU NAKAO ,
YASUHITO SAKO  and
AKIRA ITO
...Show all authors
KANAKO YAMANE
Affiliation:
Laboratory of Veterinary Parasitology, Faculty of Agriculture, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
TETSUYA YANAGIDA
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
TIAOYING LI
Affiliation:
Institute of Parasitic Diseases, Sichuan Centers for Disease Control and Prevention, Sichuan Province, Chengdu, Sichuan, China
XINGWANG CHEN
Affiliation:
Institute of Parasitic Diseases, Sichuan Centers for Disease Control and Prevention, Sichuan Province, Chengdu, Sichuan, China
PARON DEKUMYOY
Affiliation:
Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
JITRA WAIKAGUL
Affiliation:
Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
AGATHE NKOUAWA
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
MINORU NAKAO
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
YASUHITO SAKO
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
AKIRA ITO
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
HIROSHI SATO
Affiliation:
Laboratory of Veterinary Parasitology, Faculty of Agriculture, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
MUNEHIRO OKAMOTO*
Affiliation:
Section of Wildlife Diversity, Center for Human Evolution Modeling Research, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
*
*Corresponding author: Section of Wildlife Diversity, Center for Human Evolution Modeling Research, Primate Research Institute, Kyoto University, 41-2 Kanrin, Inuyama-shi, Aichi 484-8506, Japan. Tel: +81-568-63-0584. Fax: +81-568-63-0085. E-mail: mokamoto@pri.kyoto-u.ac.jp
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Summary

Partial sequences of the DNA polymerase delta (pold) gene from Taenia saginata-like adult worms were sequenced. Phylogenetic analysis revealed that pold gene sequences were clearly divided into two clades, differing from each other in five to seven nucleotides. There is little doubt that T. saginata and Taenia asiatica were once separated into two distinct taxa as has been concluded in previous studies. On the other hand, most of the adult worms, which were identified as T. asiatica using mitochondrial DNA, were homozygous for an allele that originated from the allele of T. saginata via single nucleotide substitution. These results indicate that most of the adult worms, which had been called T. asiatica, are not actually ‘pure T. asiatica’ but instead originated from the hybridization of ‘pure T. saginata’ and ‘pure T. asiatica’.

Keywords

Taenia saginataTaenia asiaticahybridnuclear-mitochondrial discordancepold gene
Type
Research Article
Information
Parasitology , Volume 140 , Special Issue 13: Control of cestode zoonoses in Asia: role of basic and applied science , November 2013 , pp. 1595 - 1601
Copyright
Copyright © Cambridge University Press 2013 

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