強酸性湖潟沼における炭素・窒素安定同位体比によるサンユスリカ (<I>Chironomus acerbiphilus</I>) 幼虫の餌資源解析

• 土居 秀幸

  東北大学大学院理学研究科生物専攻

• 菊地 永祐

  東北大学東北アジア研究センター

• 鹿野 秀一

  東北大学東北アジア研究センター

書誌事項

タイトル別名

• Carbon and Nitrogen Stable Isotope Ratios Analysis of Food Sources for Chironomus acerbiphilus larvae(Diptera Chironomidae) in Strongly Acidic Lake Katanuma.

抄録

The food sources for Chironomus acerbiphilus larvae (Diptera Chironomidae) were analyzed using carbon and nitrogen stable isotope ratios in Lake Katanuma. Lake Katanuma is a volcanic and strongly acidic lake (average pH 2.2) . In Lake Katanuma, potential sources of diets for the chironomid larvae are limited including a benthic diatom (Pinnularia braunii), a phytoplankton (Chlamydomonas acidophila), sulfate oxidizing bacteria, and vascular plants supplied from vegetation surrounding the lake. Based on the average carbon and nitrogen isotope ratios among these potential sources and sediment, benthic diatoms were considered to be most probable food source of the chironomid larvae. δ¹³C values of the chironomid were significantly different among seasons and habitat depths, suggesting that diet of C. acerbiphilus changed seasonally and with habitat depth.

収録刊行物

• ＲＡＤＩＯＩＳＯＴＯＰＥＳ

  ＲＡＤＩＯＩＳＯＴＯＰＥＳ 50 (12), 601-611, 2001

  公益社団法人 日本アイソトープ協会

キーワード

• <I>Chironomus acerbiphilus</I> larvae
• carbon
• nitrogen
• stable isotope
• food source analysis
• acidic lake
• Lake Katanuma

詳細情報

• CRID: 1390282679129348096
• NII論文ID: 130004383157
• DOI: 10.3769/radioisotopes.50.12_601
• ISSN: 18844111
• ISSN: 00338303
• Web Site: http://www.jstage.jst.go.jp/article/radioisotopes1952/50/12/50_12_601/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可