水環境学会誌
Online ISSN : 1881-3690
Print ISSN : 0916-8958
ISSN-L : 0916-8958
調査報告
希少淡水魚ニッポンバラタナゴ保護の取組み
-タイリクバラタナゴ混入個体群の池干しと捕獲による防除の試み-
白井 康子池田 滋伊藤 英夫横井 聰
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2009 年 32 巻 12 号 p. 661-664

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Japanese rose bitterling, Rhodeus ocellatus kurumeus, is an endangered freshwater fish in Japan. Both the expansion of the habitat of an alien subspecies, R. o. ocellatus, and the increased chances of hybridization between the two subspecies have threatened the genetic identity of R. o. kurumeus. To conserve R. o. kurumeus in Kagawa Prefecture, 17 populations were genetically monitored in 2006. Two individuals in a pond were found to harbor R. o. ocellatus type mitochondrial DNA through PCR-RFLP analysis. Then the contaminated population was transplanted to a closed Bio-top water system to prevent contamination in other ponds. Three-day pond drying was found to be insufficient to eradicate R. ocellatus.

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© 2009 公益社団法人 日本水環境学会
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