1. Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki, Miyazaki 889-2192, Japan
2. Medical Zoology Group, Department of Infectious Diseases, Hokkaido Institute of Public Health, North 19, West 12, Kitaku, Sapporo, Hokkaido 060-0819, Japan
3. Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki, Miyazaki 889-2192, Japan
4. Departement of Parasitology, Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
5. Department of Microbiology and Immunology, School of Medicine, Fukuoka University, 7-45-1 Nanakuma, Fukuoka Jonan-ku, Fukuoka 814-0180, Japan
6. Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki, Miyazaki 889-2192, Japan