Intraspecific Relationships and Variation of Two Lefua Species (Balitoridae, Cypriniformes) in the Tokai Region, Honshu, Japan
| Autor: | Seiya Hida, Takurou Ozaki, Jun-Ichi Miyazaki, Masashi Nakazawa, Tomonari Asaka, Misaki Iwata, Youki Fukasawa, Yuichirou Tabata |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Paraphyly education.field_of_study biology Phylogenetic tree Ecology Population biology.organism_classification 010603 evolutionary biology 01 natural sciences Intraspecific competition Lefua 03 medical and health sciences Phylogeography 030104 developmental biology Cypriniformes Biological dispersal education |
| Zdroj: | Journal of Water Resource and Protection. :238-253 |
| ISSN: | 1945-3108 1945-3094 |
| DOI: | 10.4236/jwarp.2017.92016 |
| Popis: | Two species Lefua echigonia and Lefua sp. 2 of the eight-barbel loach inhabit the Tokai region of Honshu, Japan. We determined sequences of the mitochondrial D-loop region to elucidate intraspecific phylogenetic relationships and variation in these two species. Lefua sp. 2 represented high intraspecific genetic similarity and complicated haplotype network, but three assemblages were recognized, including specimens mainly from Yahagi, Toyo, and Tenryu River systems, respectively, and named Groups 1 to 3. Divergence of Group 1 from the others was marginally supported, but Group 2 was paraphyletic to Group 3, suggesting the existence of two populations, i.e. Yahagi River population and Toyo-Tenryu River population. Lefua echigonia also represented high intraspecific genetic similarity, and two assemblages with slight genetic differentiation were discernible, including specimens from Shizuoka and southeastern Aichi prefectures and those from northwestern Aichi, Gifu, and Mie prefectures, respectively, and named Groups A and B. Star-like relationships of haplotypes suggested the dispersal origin located in eastern Aichi prefecture. The two species are threatened to extinction and thus we proposed evolutionary significant units for conservation. |
| Databáze: | OpenAIRE |
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