C-banding analysis of six species of lung flukes,Paragonimus spp. (Trematoda: Platyhelminthes), from Japan and Korea (original) (raw)

Abstract

We examined C-banded karyotypes of six species of lung flukes from Japan and Korea; diploid and triploid_Paragonimus westermani, P. miyazakii, P. ohirai, P. iloktsuenensis_ and_P. sadoensis_, with special reference to their karyotypic diversification. C-band analysis between the diploid and the triploid_westermani_ revealed that two of three homologues of the triploid resembled those of the diploid in C-band pattern, while the remaining chromosome showed a different pattern from any species examined here. This karyological evidence indicates that the triploid is allotriploid probably induced by interspecific hybridization between the diploid_westermani_ and an unknown species; we, therefore, suggest that the triploid_westermani_ is an independent species and synonymous with_P. pulmonalis_ (Miyazaki 1978). As the morphologically similar three species,ohirai, iloktsuenensis and_sadoensis_, had the same C-band polymorphism in chromosome No. 4, these species are classified as the local races of_P. ohirai. Paragonimus miyazakii_ has one common C-band (5q) with the diploid_westermani_, but other bands (1q, 4q, 6q, 7p and 7q) are different. From these observations, the six species examined are phylogenetically divided into three groups: (1)westermani group containing diploid and triploid (=pulmonalis) species, (2)miyazakii and (3)ohirai including two geographic races,iloktsuenensis and sadoensis.

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Authors and Affiliations

1. Department of Parasitic Diseases, Kumamoto University School of Medicine, 2-2-1 Honjo, 860, Kumamoto, Japan
   H. Hirai & Y. Sakaguchi
2. Department of Parasitology, School of Medicine, Fukuoka University, 814, Fukuoka, Japan
   S. Habe
3. National Institute of Genetics, 411, Mishima, Shizuoka-ken, Japan
   H. T. Imai

Authors

1. H. Hirai
2. Y. Sakaguchi
3. S. Habe
4. H. T. Imai

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Hirai, H., Sakaguchi, Y., Habe, S. et al. C-banding analysis of six species of lung flukes,Paragonimus spp. (Trematoda: Platyhelminthes), from Japan and Korea.Z. Parasitenkd. 71, 617–629 (1985). https://doi.org/10.1007/BF00925595

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• Accepted: 22 March 1985
• Issue date: September 1985
• DOI: https://doi.org/10.1007/BF00925595

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