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―

書誌事項

タイトル別名
  • Organized Activities for Conserving A Critically Endangered Freshwater Fish, Rhodeus Ocellatus Kurumeus-An Attempt to Eradicate the Population Contaminated with Rhodeus Ocellatus Ocellatus by Pond Drying and Fish Removal-
  • キショウ タンスイギョ ニッポンバラタナゴ ホゴ ノ トリクミ タイリクバラタナゴ コンニュウ コタイグン ノ イケ ボシ ト ホカク ニ ヨル ボウジョ ノ ココロミ

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抄録

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.

収録刊行物

  • 水環境学会誌

    水環境学会誌 32 (12), 661-664, 2009

    公益社団法人 日本水環境学会

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