Taxonomic Reassessment of the Izumo Lineage of <i>Hynobius utsunomiyaorum</i>: Description of a New Species from Chugoku, Japan
Here, we describe a new species of the genus <i>Hynobius</i> from Chugoku, Japan. In populations from central to eastern Shimane Prefecture, the Izumo Lineage of <i>Hynobius utsunomiyaorum</i> was clearly distinguished from the true <i>Hynobius utsunomiyaorum</i>...
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MDPI AG
2021-07-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/11/8/2187 |
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| author | Hirotaka Sugawara Takayuki Iwata Hitoshi Yamashita Masahiro Nagano |
| author_facet | Hirotaka Sugawara Takayuki Iwata Hitoshi Yamashita Masahiro Nagano |
| author_sort | Hirotaka Sugawara |
| collection | DOAJ |
| description | Here, we describe a new species of the genus <i>Hynobius</i> from Chugoku, Japan. In populations from central to eastern Shimane Prefecture, the Izumo Lineage of <i>Hynobius utsunomiyaorum</i> was clearly distinguished from the true <i>Hynobius utsunomiyaorum</i> based on morphological and molecular evidence. Thus, we describe the former lineage as a new species, <i>Hynobius kunibiki</i> sp. nov. Morphological comparisons revealed that <i>H. utsunomiyaorum</i> lacks a distinct yellow line on the ventral side of its tail, whereas the new species possesses this yellow line; most <i>H. utsunomiyaorum</i> individuals have distinct white spots on the lateral sides of their body and lack a fifth toe, whereas the new species largely lacks these spots, and all examined individuals had a fifth toe. The two species also differed significantly by several other morphological characteristics. The lentic species <i>Hynobius setoi</i> is morphologically similar to <i>H. kunibiki</i> sp. nov., but they differ significantly by various morphological characteristics. Despite their partial morphological similarity, these two species differed substantially in terms of their genetics. Finally, we show, in a phylogenetic tree including all Japanese <i>Hynobius</i> species, that the subgenus <i>Hynobius</i> can be divided into four genetic clades. Overall, this information will help develop conservation management strategies and policies for these species. |
| first_indexed | 2024-03-10T09:05:12Z |
| format | Article |
| id | doaj.art-53b10b6493854bca93c22fc323161110 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T09:05:12Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-53b10b6493854bca93c22fc3231611102023-11-22T06:28:28ZengMDPI AGAnimals2076-26152021-07-01118218710.3390/ani11082187Taxonomic Reassessment of the Izumo Lineage of <i>Hynobius utsunomiyaorum</i>: Description of a New Species from Chugoku, JapanHirotaka Sugawara0Takayuki Iwata1Hitoshi Yamashita2Masahiro Nagano3Faculty of Science and Technology, Kochi University, 2-5-1 Akebonocho, Kochi City 780-8072, JapanYasugi City Hall, 878-2, Yasugicho, Yasugi City 692-8686, JapanKurayoshi City Hall, 722, Aoimachi, Kurayoshi City 682-8611, JapanFaculty of Science and Technology, Oita University, 700 Dannoharu, Oita City 870-1192, JapanHere, we describe a new species of the genus <i>Hynobius</i> from Chugoku, Japan. In populations from central to eastern Shimane Prefecture, the Izumo Lineage of <i>Hynobius utsunomiyaorum</i> was clearly distinguished from the true <i>Hynobius utsunomiyaorum</i> based on morphological and molecular evidence. Thus, we describe the former lineage as a new species, <i>Hynobius kunibiki</i> sp. nov. Morphological comparisons revealed that <i>H. utsunomiyaorum</i> lacks a distinct yellow line on the ventral side of its tail, whereas the new species possesses this yellow line; most <i>H. utsunomiyaorum</i> individuals have distinct white spots on the lateral sides of their body and lack a fifth toe, whereas the new species largely lacks these spots, and all examined individuals had a fifth toe. The two species also differed significantly by several other morphological characteristics. The lentic species <i>Hynobius setoi</i> is morphologically similar to <i>H. kunibiki</i> sp. nov., but they differ significantly by various morphological characteristics. Despite their partial morphological similarity, these two species differed substantially in terms of their genetics. Finally, we show, in a phylogenetic tree including all Japanese <i>Hynobius</i> species, that the subgenus <i>Hynobius</i> can be divided into four genetic clades. Overall, this information will help develop conservation management strategies and policies for these species.https://www.mdpi.com/2076-2615/11/8/2187canonical discriminant analysiscytochrome <i>b</i>lentic salamanderpolyphylySan’in region |
| spellingShingle | Hirotaka Sugawara Takayuki Iwata Hitoshi Yamashita Masahiro Nagano Taxonomic Reassessment of the Izumo Lineage of <i>Hynobius utsunomiyaorum</i>: Description of a New Species from Chugoku, Japan Animals canonical discriminant analysis cytochrome <i>b</i> lentic salamander polyphyly San’in region |
| title | Taxonomic Reassessment of the Izumo Lineage of <i>Hynobius utsunomiyaorum</i>: Description of a New Species from Chugoku, Japan |
| title_full | Taxonomic Reassessment of the Izumo Lineage of <i>Hynobius utsunomiyaorum</i>: Description of a New Species from Chugoku, Japan |
| title_fullStr | Taxonomic Reassessment of the Izumo Lineage of <i>Hynobius utsunomiyaorum</i>: Description of a New Species from Chugoku, Japan |
| title_full_unstemmed | Taxonomic Reassessment of the Izumo Lineage of <i>Hynobius utsunomiyaorum</i>: Description of a New Species from Chugoku, Japan |
| title_short | Taxonomic Reassessment of the Izumo Lineage of <i>Hynobius utsunomiyaorum</i>: Description of a New Species from Chugoku, Japan |
| title_sort | taxonomic reassessment of the izumo lineage of i hynobius utsunomiyaorum i description of a new species from chugoku japan |
| topic | canonical discriminant analysis cytochrome <i>b</i> lentic salamander polyphyly San’in region |
| url | https://www.mdpi.com/2076-2615/11/8/2187 |
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