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Parasitology Research

, Volume 118, Issue 2, pp 663–666 | Cite as

Evaluating the ontogenetic external morphology of an ectoparasitic Torix tukubana (Hirudinida: Glossiphoniidae), with records of its new host amphibian species

  • Chiaki KambayashiEmail author
  • Atsushi Kurabayashi
  • Takafumi Nakano
Genetics, Evolution, and Phylogeny - Short Communication

Abstract

Torix is a leech genus containing freshwater proboscidate species, and several members of this taxon are ectoparasites specific to amphibians. Torix tukubana inhabits mountain streams in Japan, and only two frog species are known to be hosts. We collected this leech from two other amphibians, Onychodactylus japonicus (Japanese clawed salamander) and Rana ornativentris (montane brown frog), for the first time. This finding suggests that the host specificity of T. tukubana is low. The immature individuals of T. tukubana were also collected and identified based on DNA data. This is the first juvenile record of this species confirmed by its DNA barcode sequences. Several morphological characters known from large individuals and used as diagnostic characteristics in taxonomic keys were not observed in the juveniles, suggesting that these are ontogenetic traits.

Keywords

Leech Onychodactylus japonicus Rana ornativentris cox1 Japan 

Notes

Acknowledgments

We are grateful to Junichi Naito and Norio Shimizu for their kindness in conducting the amphibian investigation. We also appreciate Nobuaki Furuno and Ryosuke Kakehashi for providing valuable advice on this study.

Funding

This study was financially supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant numbers JP15J00720, JP17K20064, JP26291080, and JP18H02497.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Amphibian Research CenterHiroshima UniversityHiroshimaJapan
  2. 2.Department of Bio-ScienceNagahama Institute of Bio-Science and TechnologyShigaJapan
  3. 3.Unit for Environmental Sciences and ManagementNorth-West UniversityPotchefstroomSouth Africa
  4. 4.Department of Zoology, Graduate School of ScienceKyoto UniversityKyotoJapan

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