Variation in δ^<13>C and δ^<15>N among different tissues of three estuarine bivalves : implications for dietary reconstructions

この論文にアクセスする

この論文をさがす

著者

抄録

The stable isotope approach to dietary reconstructions is based on the consistent isotopic fractionation between diet and consumer. Despite the rapidly increasing use of stable isotopes in studies on bivalves, classical fractionation values (0–1‰ for δ13C and 3–4‰ for δ15N) are used in the literature irrespective of the tissue analyzed and of the sample preparation method. We measured δ13C and δ15N for lipid-removed and lipid-containing tissues (adductor muscle, foot, mantle lobe, siphon, labial palp, gill lamella, midgut gland, and male and female gonad) of three suspension feeding bivalves (Crassostrea gigas, Cyclina sinensis and Ruditapes philippinarum) to provide an essential calibration for the diet-tissue fractionation. There were similar tissue-specific patterns in the δ13C and δ15N, which rank adductor muscle>other tissues>midgut gland or female gonad. Removal of lipids raised the δ13C and δ15N for all tissues of the three species. Acid treatment of the total soft tissues of R. philippinarum had no significant effects on the isotopic compositions. Diet-tissue fractionations for R. philippinarum were estimated based on the known fractionation values for the lipid-containing total soft tissues. Lipid removal and associated rinsing raised not only the 13C fractionation by 0.4–1.5‰ but also the 15N fractionation by 0–0.8‰, resulting in large fractionation values outside of the range of currently accepted 13C and 15N fractionation. The present study demonstrates that isotopic analyses are affected by the choice of tissue type and sample preparation method.

収録刊行物

  • Plankton & benthos research  

    Plankton & benthos research 1(4), 178-182, 2006-11-01 

    日本プランクトン学会、日本ベントス学会

参考文献:  27件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

被引用文献:  1件

被引用文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10018808519
  • NII書誌ID(NCID)
    AA12130745
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    18808247
  • NDL 記事登録ID
    8567681
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z54-J424
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ