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Discovery of Paragonimus skrjabini in Vietnam and its phylogenetic status in the Paragonimus skrjabini complex

Published online by Cambridge University Press:  16 October 2012

P.N. Doanh ,
H.V. Hien ,
N. Nonaka ,
Y. Horii  and
Y. Nawa
P.N. Doanh
Affiliation:
Department of Parasitology, Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hanoi, Viet Nam
H.V. Hien
Affiliation:
Department of Parasitology, Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hanoi, Viet Nam
N. Nonaka
Affiliation:
Laboratory of Veterinary Parasitic Diseases, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
Y. Horii*
Affiliation:
Laboratory of Veterinary Parasitic Diseases, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
Y. Nawa
Affiliation:
Research Affairs Division, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
*
*Fax: +81-0985–58-7276 E-mail: horii@cc.miyazaki-u.ac.jp
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Abstract

Two members of the Paragonimus skrjabini complex, P. skrjabini and P. miyazakii, are now considered as two sub-species, P. skrjabini skrjabini and P. skrjabini miyazakii. They are well known as important pathogens for human paragonimiasis in China and Japan. Recently, members of this species complex have been reported from India. Here we report the first discovery of P. skrjabini from freshwater crab hosts in Thanh Hoa province, Vietnam. For morphological and molecular phylogenetic studies, adult worms were obtained by experimental infection in cats and dogs. Molecular analyses of metacercariae and adults revealed that the P. skrjabini population from Thanh Hoa, Vietnam was almost completely identical with that from Yunnan province, China. Those populations from Thanh Hoa, Vietnam and Yunnan, China and those from Manipur, India were significantly different from P. skrjabini populations reported from other localities of China in cytochrome oxidase subunit 1 (CO1) gene sequences, indicating considerable genetic variation within the P. skrjabini complex. Moreover, low bootstrap values in the CO1 tree suggested that more variant genotypes belonging to P. skrjabini complex may be found in other Asian countries in between Vietnam and India, such as Myanmar, Laos and Thailand. Since P. skrjabini is known as a pathogen for humans, paragonimiasis cases caused by P. skrjabini might be found in Vietnam and other Asian countries.

Type
Research Papers
Information
Journal of Helminthology , Volume 87 , Issue 4 , December 2013 , pp. 450 - 456
Copyright
Copyright © Cambridge University Press 2012 

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