多摩川河口干潟に優占する十脚甲殻類3種の生息場所による食性の変化

DOI Web Site Web Site 被引用文献2件 参考文献49件

書誌事項

タイトル別名
  • Change of Feeding Habits of Three Decapod Species Dominating the Tamagawa Estuary in Central Japan Corresponding to Habitats
  • タマガワ カコウ ヒガタ ニ ユウセンスル ジッキャク コウカクルイ 3シュ ノ セイソク バショ ニ ヨル ショクセイ ノ ヘンカ

この論文をさがす

抄録

We determined the stable isotope ratios of carbon and nitrogen of three decapods, Ilyoplax pusilla, Macrophthalmus japonicus, and Helice tridens, that dominate the Tamagawa Estuary as well as those of other coexisting benthic animals, benthic diatoms, terrestrial plants, surface sediment, and suspended particulate organic matter present in the estuary water. The results suggest that I. pusilla feeds on benthic diatoms as its primary food source; H. tridens feeds on other benthic animals in addition to organic matter in the bottom sediment, while M. japonicus feeds on benthic diatoms and other animals. The values of total organic carbon (TOC), total nitrogen (TN), and stable isotope ratios of sediment samples from the burrow walls and mud around the burrow entrances of M. japonicus were similar to those of surface sediment samples. However, sediment samples from the burrow wall and mud balls of I. pusilla showed lower TOC, TN, and δ15N values than the surface sediment samples, which suggests that I. pusilla uses mud devoid of organic materials to construct the burrow wall.

収録刊行物

被引用文献 (2)*注記

もっと見る

参考文献 (49)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ