Carbon and nitrogen sources for the bivalve <i>Corbicula japonica</i> in Natori River estimated from stable isotope analyses
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- KATAYAMA AYU
- Graduate school of Agricultural Science, Tohoku University
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- ITO KINUKO
- Graduate school of Agricultural Science, Tohoku University
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- SASAKI KOUICHI
- Graduate school of Agricultural Science, Tohoku University
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- KATAYAMA SATOSHI
- Graduate school of Agricultural Science, Tohoku University
Bibliographic Information
- Other Title
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- 名取川における安定同位体比を用いたヤマトシジミ <i>Corbicula japonica</i> の炭素源と窒素源の推定
- 名取川における安定同位体比を用いたヤマトシジミCorbicula japonicaの炭素源と窒素源の推定
- ナトリガワ ニ オケル アンテイ ドウイタイヒ オ モチイタ ヤマトシジミ Corbicula japonica ノ タンソゲン ト チッソ ゲン ノ スイテイ
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Abstract
We report measurements of the C and N stable isotope ratios (δ13C and δ15N) in tissue of the bivalve Corbicula japonica and particulate organic matter (POM), and the C/N ratios of microalgae, terrestrial plants and sedimentary organic matter in Natori River, Miyagi Prefecture, Japan. δ13C of the bivalve and POM at upstream stations (4.0∼4.5 km from the river mouth) were significantly lower than those in the downstream station (1.5 km from the river mouth). The low δ13C values in the upper two stations (between −28.0 and −25.5‰) indicated that terrestrial organic matter is the primary C source of the bivalve. However, δ15N values for the bivalve at all stations (between 9.5 and 10.8‰) did not differ significantly. This suggests that benthic microalgae are the primary N source in all stations. We conclude that C and N sources for the bivalve originate from different food items in the upper reaches of the river.<br>
Journal
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- NIPPON SUISAN GAKKAISHI
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NIPPON SUISAN GAKKAISHI 79 (4), 649-656, 2013
The Japanese Society of Fisheries Science
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Keywords
Details 詳細情報について
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- CRID
- 1390282681393907584
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- NII Article ID
- 10031178459
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- NII Book ID
- AN00193422
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- COI
- 1:CAS:528:DC%2BC3sXhsFajsb7L
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- ISSN
- 1349998X
- 00215392
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- NDL BIB ID
- 024812786
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed