リュウキュウアユの分布と生息状況　１９８６年の調査結果

DOI 日本農学文献記事索引 Web Site 被引用文献26件

書誌事項

タイトル別名
  • Distribution and Abundance of the Ryukyuan Subspecies of the Ayu Plecoglossus altivelis ryukyuensis: Results of a Survey Made in 1986.
  • リュウキュウアユ ノ ブンプ ト セイソク ジョウキョウ 1986ネン ノ チ
  • Results of a Survey Made in 1986
  • 1986年の調査結果

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抄録

The distribution and abundance of an endangered subspecies of the ayu Plecoglossus altivelis ryukyuensis was determined on the three major islands, Amami-oshima, Tokunoshima, and Okinawa Islands, in 1986. The fish was observed only in five streams in the southern part of Amami-oshima Island. Among these five streams, the majority of fish were found in the Yakugachi River. While the number of fish in this particular stream was approximately 3.5×104, in all other streams the densities were much lower, and we therefore conclude that this subspecies is threatened and some attempts should be made for conservation of this fish.

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 58 (2), 199-206, 1992

    公益社団法人 日本水産学会

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