ＲＡＰＤ法によるＨｙｄｒｏｐｓｙｃｈｅ　ｏｒｉｅｎｔａｌｉｓ（Ｈｙｄｒｏｐｓｙｃｈｉｄａｅ：Ｔｒｉｃｈｏｐｔｅｒａ）の遺伝的多様性に基づく河川環境評価―宮城県名取川水系を例として―

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書誌事項

タイトル別名
  • Evaluation of River Environment Based on the Genetic Diversity of Hydropsyche orientalis (Hydropsychidae: Trichoptera) Using RAPD Analysis-A Case Study of the Natori River in Miyagi Prefecture-
  • RAPDホウ ニ ヨル Hydropsyche orientalis Hydropsychidae Trichoptera ノ イデンテキ タヨウセイ ニ モトヅク カセン カンキョウ ヒョウカ ミヤギケン ナトリガワ スイケイ オ レイ ト シテ
  • A Case Study of the Natori River in Miyagi Prefecture
  • 宮城県名取川水系を例として

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抄録

It has been reported that several floras and faunas in rivers are genetically impaired by artificial structures such as dams and cities because of the fragmentation and the reduced heterogeneity of their habitats. However, the investigations on genetic diversities of Trichoptera in rivers have been few to date. In this study, therefore, the genetic investigation of Hydropsyche orientalis was conducted at 13 stations in the Natori River System in Miyagi Prefecture, Japan from Dec. 2000 to May 2001. The Okura and Kamafusa dams, and the Sendai urban area are located upstream and downstream of the rivers. The DNA polymorphisms of Hydropsyche orientalis collected at the 13 stations were analyzed with the appropriate primer, OPA-11, for calculating the genetic diversity index. The result of statistical analysis of the index showed a significantly higher level of genetic diversity of Hydropsyche orientalis in the natural area than in the areas around the dams. Moreover, the effect of urbanization on its genetic diversity was indicated based on the estimation of its migration from the results of the cluster analysis of the DNA polymorphisms.

収録刊行物

  • 水環境学会誌

    水環境学会誌 26 (4), 223-229, 2003

    公益社団法人 日本水環境学会

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