Scholarlink

<p>Belonging to the <i>Oncorhynchus masou</i> species complex, the Biwa salmon is described as the new species <i>Oncorhynchus biwaensis</i>, a Lake Biwa (Japan) endemic which has been treated as an unidentified species/subspecies since 1990. The new species can be easily distinguished from Masu salmon [<i>Oncorhynchus masou masou</i> (Brevoort 1856)] and Amago salmon (<i>Oncorhynchus masou ishikawae</i> Jordan and McGregor <i>in</i> Jordan and Hubbs 1925) among the species complex in having more pyloric caeca and fewer transverse scales above the lateral line. The identity of <i>Oncorhynchus rhodurus</i> Jordan and McGregor <i>in</i> Jordan and Hubbs 1925, often previously applied to the new species, is shown to differ from the latter. Similarly, <i>O. ishikawae</i>, also previously confused with the new species, is confirmed as Amago salmon. Types of the new species and examples of the other subspecies examined were confirmed as nonhybrids by DNA analysis.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The Biwa salmon, a new species of Oncorhynchus (Salmonidae) endemic to Lake Biwa, Japan

  • 期刊论文

  • 发表日期：

    2025年6月21日

查看全文
  • Yasuhiro Fujioka,
  • Masayuki Kuwahara,
  • Ryoichi Tabata,
  • Yusuke Fuke,
  • Tetsuji Nakabo

摘要

Belonging to the Oncorhynchus masou species complex, the Biwa salmon is described as the new species Oncorhynchus biwaensis, a Lake Biwa (Japan) endemic which has been treated as an unidentified species/subspecies since 1990. The new species can be easily distinguished from Masu salmon [Oncorhynchus masou masou (Brevoort 1856)] and Amago salmon (Oncorhynchus masou ishikawae Jordan and McGregor in Jordan and Hubbs 1925) among the species complex in having more pyloric caeca and fewer transverse scales above the lateral line. The identity of Oncorhynchus rhodurus Jordan and McGregor in Jordan and Hubbs 1925, often previously applied to the new species, is shown to differ from the latter. Similarly, O. ishikawae, also previously confused with the new species, is confirmed as Amago salmon. Types of the new species and examples of the other subspecies examined were confirmed as nonhybrids by DNA analysis.