Open Access Open Access  Restricted Access Subscription or Fee Access


DOI: http://dx.doi.org/10.11646/zootaxa.3866.1.3

Two new Salamanders of the genus Onychodactylus from Eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae)

NATSUHIKO YOSHIKAWA, MASAFUMI MATSUI

Abstract


We describe two new species of hynobiid salamanders in the genus Onychodactylus from eastern Honshu, Japan, based on the morphological and genetic evidence. Onychodactylus intermedius sp. nov. is distributed in southern part of Tohoku District and northern Ibaraki and Niigata Prefectures, and was previously reported as S-Tohoku group. Onychodactylus intermedius belongs to the O. japonicus species complex, and differs from the other congeners in having relatively long tail, narrow head, short snout, 18 presacral vertebrae, and distinctly curved vomerine tooth series without gap. Onychodactylus fuscus sp. nov. is known from only four localities in Fukushima and Niigata Prefectures of Tohoku and Hokuriku Districts. It also belongs to the O. japonicus complex, but lacks the dorsal stripe, which is a diagnostic character of the species complex. In other characteristics, O. fuscus differs from the other congeners in having comparatively long tail, wide head and internarial space, shallowly curved vomerine tooth series with gap, and relatively few vomerine teeth. Both species described here breed in winter. Phylogenetically, the two new species are closely related to each other, forming a well-supported clade with O. tsukubaensis as their sister species. Onychodactylus intermedius sp. nov. is known to be parapatric with O. japonicus and O. nipponoborealis without hybridization, whereas O. fuscus sp. nov. is sympatric with O. japonicus at least in a single known locality, and analysis of microsatellite loci indicates they are reproductively isolated.

 


Keywords


Onychodactylus intermedius, Onychodactylus fuscus, salamander, morphology, taxonomy, Eastern Honshu, Japan

Full Text:

PDF/A (11.58 MB)

References


Akita, Y. (1982) Notes on the egg-laying site of Onychodactylus japonicus on Mt. Hodatsu. Japanese Journal of Herpetology, 9, 111–117.

Akita, Y. (1989) Breeding cycle of Onychodactylus japonicus on Mt. Hodatsu, with special reference to biannual spawning. In: Matsui, M., Hikida, T. & Goris, R.C. (Eds.), Current Herpetology in East Asia. Herpetological Society of Japan, Kyoto, pp. 305.

Dunn, E.R. (1923) The salamanders of the family Hynobiidae. Proceedings of the American Academy of Arts and Sciences, 58, 445–523.
http://dx.doi.org/10.2307/20026019

Evanno, G., Regnaut, S., & Goudet, J. (2005) Detecting the number of clusters of individuals using the software STRUCTURE: a simulation study. Molecular Ecology, 14, 2611–2620.
http://dx.doi.org/10.1111/j.1365-294X.2005.02553.x

Fukushima Prefecture (2002) Red Data Book Fukushima II: Threatened Wildlife in Fukushima Prefecture (Freshwater Fishes, Amphibians, Reptiles, and Mammals). Department of Life and Environment, Fukushima Prefecture, Fukushima, 122 pp.

Ibaraki Prefecture (2000) Red list of threatened wild animals in Ibaraki Prefecture. Department of Life and Environment, Ibaraki Prefecture, Mito, 195 pp.

Iwasawa, H. & Kera, Y. (1980) Normal stages of development of the Japanese lungless salamander, Onychodactylus japonicus (Houttuyn). Japanese Journal of Herpetology, 8, 73–89.

Jobb, G. (2008) ‘‘TREEFINDER version of October 2008’’. Munich, Germany. Available from: http://www.treefinder.de (accessed 25 August 2014)

Kuzmin, S.L. (1995) The Clawed Salamanders of Asia. Westarp Wissenschaften, Magdeburg, 108 pp.

Mayr, E. (1942) Systematics and the origin of species from the viewpoint of a zoologist. Columbia University Press, New York, 334 pp.

Misawa, Y. (1989) The method of counting costal grooves. In: Matsui, M., Hikida, T. & Goris, R.C. (Eds.), Current Herpetology in East Asia. Herpetological Society of Japan, Kyoto, pp. 129–134.

Miyagi Prefecture (2013) Red List of Threatened Wildlife in Miyagi Prefecture 2013. Department of Life and Environment, Miyagi Prefecture, Sendai. Available from: http://www.pref.miyagi.jp/soshiki/sizenhogo/red-index.html (accessed 6 April 2014)

Molecular Ecology Resources Primer Development Consortium (2010) Permanent genetic resources added to Molecular Ecology Resources Database 1 October 2009–30 November 2009. Molecular Ecology Resources,10, 404–408.
http://dx.doi.org/10.1111/j.1755-0998.2009.02827.x

Nakamura, K. & Uéno, S. (1963) Japanese Reptiles and Amphibians in Colour. Hoikusha, Osaka, 214 pp.

Niigata Prefecture (2001) Red Data Book in Niigata, Japan. Department of Life and Environment, Niigata Prefecture, Niigata, 467 pp.

Okada, S. (1891) Catalogue of Vertebrated Animals of Japan. Kinkodo, Tokyo, 125 pp.
http://dx.doi.org/10.5962/bhl.title.12436

Okada, Y. (1937) Notes on the Amphibia of the Tohoku District, Northern Japan. Saito Ho-on Kai Museum Research Bulletin, 12, 177–206.

Poyarkov, N.A., Che, J., Min, M.S., Kuro-o, M., Yan, F., Li, C., Iizuka, K. & Vieites, D.R. (2012) Review of the systematics, morphology and distribution of Asian clawed salamanders, genus Onychodactylus (Amphibia, Caudata: Hynobiidae), with the description of four new species. Zootaxa, 3465, 1–106.

Pritchard, J.K., Stephens, M., & Donnelly, P. (2000) Inference of population structure using multilocus genotype data. Genetics, 155, 945–959.

Sato, I. (1937) A synopsis of the family Hynobiidae of Japan. Bulletin of the Biogeographical Society of Japan, 7, 31–45.

Sato, I. (1943) A Monograph of the Tailed Batrachians of Japan. Nippon Shuppan-sha, Osaka, 520 pp.

Stejneger, L. (1907) Herpetology of Japan and adjacent territory. Bulletin of the United States National Museum, 58, 1–577.

Tago, K. (1907) Studies on the Urodela of Japan. Zoological Magazine, 226, 229–248.

Tago, K. (1931) Newts and Salamanders. Unsodo, Kyoto, 210 pp.

Tanabe, A.S. (2008) Phylogears2 version 2.0.2010.11.12. Available from: http://www.fifthdimension.jp/ (accessed 25 August 2014)

Tanabe, A.S. (2011) Kakusan4 and Aminosan: two programs for comparing nonpartitioned, proportional and separate models for combined molecular phylogenetic analyses of multilocus sequence data. Molecular Ecology Resources, 11, 914–921.
http://dx.doi.org/10.1111/j.1755-0998.2011.03021.x

Vos, R.A. (2003) Accelerated likelihood surface exploration: the likelihood ratchet. Systematic Biology, 52, 368–373.
http://dx.doi.org/10.1080/10635150390196993

Yamagata Prefecture (2003) Red Data Book Yamangata: List of species and category. Department of Environment and Energy, Yamagata Prefecture, Yamagata. Available from: http://www.pref.yamagata.jp/ou/kankyoenergy/053001/joho/red_data_b
ook/reddata33.pdf (accessed 6 April 2014)

Yoshikawa, N. & Matsui, M. (2013) A new salamander of the genus Onychodactylus from Tsukuba Mountains, eastern Honshu, Japan (Amphibia, Caudata, Hynobiidae). Current Herpetology, 32, 9–25.

Yoshikawa, N., Matsui, M. & Nishikawa, K. (2010b) Allozymic variation and phylogeography of two genetic types of Onychodactylus japonicus (Amphibia: Caudata: Hynobiidae) sympatric in the Kinki District, Japan. Zoological Science, 27, 344–355.

Yoshikawa, N., Matsui, M. & Nishikawa, K. (2012) Genetic structure and cryptic diversity of Onychodactylus japonicus (Amphibia, Caudata, Hynobiidae) in northeastern Honshu, Japan, as revealed by allozymic analysis. Zoological Science, 29, 229–237.

Yoshikawa, N., Matsui, M., Nishikawa, K., Kim, J. B. & Kryukov, A. (2008) Phylogenetic relationships and biogeography of the Japanese clawed salamander, Onychodactylus japonicus (Amphibia: Caudata: Hynobiidae), and its congener inferred from the mitochondrial cytochrome b gene. Molecular Phylogenetics and Evolution, 49, 249–259.
http://dx.doi.org/10.1016/j.ympev.2008.07.016

Yoshikawa, N., Matsui, M., Nishikawa, K., Misawa, Y. & Tanabe, S. (2010a) Allozymic variation of the Japanese clawed salamander, Onychodactylus japonicus (Amphibia: Caudata: Hynobiidae), with special reference to the presence of two sympatric genetic types. Zoological Science, 27, 33–40.
http://dx.doi.org/10.2108/zsj.27.33

Yoshikawa, N., Matsui, M., Tanabe, S. & Okayama, T. (2013) Description of a new salamander of the genus Onychodactylus from Shikoku and Western Honshu, Japan (Amphibia, Caudata, Hynobiidae). Zootaxa, 3693 (4), 441–464.
http://dx.doi.org/10.11646/zootaxa.3693.4.2

Zhang, P., Chen, Y.Q., Zhou, H., Liu, Y.F., Wang, X.L., Papenfuss, T.J., Wake, D.B. & Qu, L.H. (2006) Phylogeny, evolution, and biogeography of Asiatic salamanders (Hynobiidae). Proceedings of the National Academy of Science, USA, 103, 7360–7365.
http://dx.doi.org/10.1073/pnas.0602325103


Refbacks

  • There are currently no refbacks.


 
ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa