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.

对香鱼（Plecoglossus altivelis）琉球亚种的遗传特征、形态特征和分布进行了研究，发现琉球亚种与日本亚种之间存在一个新的等位基因替代。它们之间的平均遗传一致性为0.78，表明两个亚种的基因组结构基因平均只有78%相同，而位于吐噶喇海峡北部雅库岛的阿鱼具有日本亚种的遗传和形态特征。这一事实支持了这两个亚种被吐噶喇海峡分开并独立进化的假设。琉球亚种只在奄美大岛发现。在冲绳的这个亚种的种群可能灭绝。奄美大岛的残存种群应得到保护。

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。

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）

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。