Current status of two closely related <i>Phoxinus</i> species, in the Ishi River (Yamato River basin), Osaka Prefecture, Japan
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- Hata Hiroaki
- 近畿大学大学院農学研究科
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- Fujita Tomohiko
- 株式会社建設環境研究所
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- Watanabe Shun
- 近畿大学大学院農学研究科
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- Hosoya Kazumi
- 近畿大学農学部
Bibliographic Information
- Other Title
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- 大阪府大和川水系石川におけるヒメハヤ属魚類の生息現況
- オオサカフ ヤマト カワミズケイ イシカワ ニ オケル ヒメハヤゾクギョルイ ノ セイソク ゲンキョウ
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Description
<p>Difficulties in distinguishing between morphologically similar species, such as Phoxinus lagowskii steindachneri and Phoxinus oxycephalus jouyi, whose distributions overlap in the Kinki region, are significant for assessments of biodiversity and conservation, in addition to taxonomic status. Morphological analyses were undertaken on Phoxinus specimens (n = 75) collected in the Ishi and Chihaya rivers (Yamato River basin, Osaka Prefecture), and compared with type specimens (syntypes of Phoxinus steindachneri, Sauvage, 1883 and paratypes of Leusiscus jouyi, Jordan and Snyder, 1991) and non-type museum specimens (Phoxinus oxycephalus jouyi). Mitochondrial DNA (mtDNA) analyses of 16 individuals were also undertaken. Two distinct types of Phoxinus were recognized, differing morphologically in the presence or absence of a black horizontal band on the side of the body and scale numbers above the lateral line, and separated by a principal component analysis of 9 characters. In addition, 12 haplotypes (identified in the present and previous studies) were variously associated within two genetically different groups, corresponding to two ecological types that inhabit the upper and middle parts of the Yamato River, respectively. Because reproductive isolation is already clearly established between the two types, their recognition as separate species (Phoxinus lagowskii steindachneri and P. oxycephalus jouyi) in the Ishi and Chihaya rivers is upheld.</p>
Journal
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- Japanese Journal of Ichthyology
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Japanese Journal of Ichthyology 66 (1), 15-22, 2019-04-25
The Ichthyological Society of Japan
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Details 詳細情報について
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- CRID
- 1390282763111029760
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- NII Article ID
- 130007637242
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- NII Book ID
- AN00063212
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- ISSN
- 18847374
- 00215090
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- NDL BIB ID
- 029743340
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed