Genetic and morphological characteristics and distribution of the Ryukyuan subspecies of ayu Plecoglossus altivelis.

香鱼琉球亚种的遗传形态特征及分布。

• 批准号: 61560220
• 负责人: NISHIDA Mutsumi
• 金额: $ 1.47万
• 依托单位: University of the Ryukyus
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61560220/
• 关键词: Ayu; The Ryukyu Islands; Distribution; 生息状況; アイソザイム

Genetic and morphological characteristics and distribution of the Ryukyuan subspecies of ayu Plecoglossus altivelis were examined.A new allele substituion was discovered between the Ryukyuan and Japanese subspecies. Average genetic identity between them was 0.78, suggesting that the two subspecies share in common only 78% of total structural genes in their genome on the average.Ayu in Yaku Island, where is in the north of the Tokara Channel, showed genetic and morphological characteristics of Japanese subspecies. This fact supports the hypothesis that the both subspecies were separated by the Tokara Channel and have evolved independently.The Ryukyuan subspecies was found only in Amami-oshima Island. Populations of this subspecies in Okinawa Island probably be extinct. Remnant populations in Amami-oshima Island should be protected.

研究了Ayu plecoglossus altivelis的ryukyuan亚种的遗传和形态特征以及分布。在ryukyuan和日本亚种之间发现了一种新的等位基因取代。它们之间的平均遗传认同为0.78，这表明这两个亚种在其基因组中仅占总结构基因的78％。Yaku岛（Yaku Island）在Tokara通道北部的Yaku岛显示了日本亚种的遗传和形态特征。这一事实支持以下假设：这两个亚种都被托卡拉河道分开并独立进化。ryukyuan亚种仅在amami-oshima岛发现。冲绳岛这些亚种的种群可能已经灭绝。应保护Amami-Ishima岛的残留人群。

项目成果

NISHIDA, M.: "A new subspecies of the ayu, Plecoglossus altivelis, (Plecoglossidae) from the Ryukyu Islands."

NISHIDA, M.：“来自琉球群岛的香鱼新亚种，Plecoglossus altivelis（Plecoglossidae）。”

西田睦,内村真之: 琉球大学・理学部紀要.

西田睦美、内村雅之：琉球大学理学院通报。

NISHIDA,M. et al.: "Electrophoretic and morphological characteristics of the ayu Plecoglossus altivelis in Yaku Island with reference to the distribution limit of the Ryukyuan subspecies."

西田，M.

Nishida,M.;Y.Sawashi: Bull.Japan.Soc.Sci.Fish.

Nishida,M.；Y.Sawashi：Bull.Japan.Soc.Sci.Fish。

水野,後藤,西田睦他編: "「日本の淡水魚類」アユの地理的変異" 東海大学出版会, 146-155 (1987)

Mizuno、Goto、Mutsumi Nishida 等编：“日本淡水鱼香鱼的地理变异”东海大学出版社，146-155（1987 年）