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Food Sources for Ruditapes philippinarum in a Coastal Lagoon Determined by Mass Balance and Stable Isotope Approaches

The relationship between the food demand of a clam population (Ruditapes philippinarum (Adams & Reeve 1850)) and the isotopic contributions of potential food sources (phytoplankton, benthic diatoms, and organic matter derived from the sediment surface, seagrass, and seaweeds) to the clam diet we...

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Autores principales: Komorita, Tomohiro, Kajihara, Rumiko, Tsutsumi, Hiroaki, Shibanuma, Seiichiro, Yamada, Toshiro, Montani, Shigeru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3904936/
https://www.ncbi.nlm.nih.gov/pubmed/24489779
http://dx.doi.org/10.1371/journal.pone.0086732
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author Komorita, Tomohiro
Kajihara, Rumiko
Tsutsumi, Hiroaki
Shibanuma, Seiichiro
Yamada, Toshiro
Montani, Shigeru
author_facet Komorita, Tomohiro
Kajihara, Rumiko
Tsutsumi, Hiroaki
Shibanuma, Seiichiro
Yamada, Toshiro
Montani, Shigeru
author_sort Komorita, Tomohiro
collection PubMed
description The relationship between the food demand of a clam population (Ruditapes philippinarum (Adams & Reeve 1850)) and the isotopic contributions of potential food sources (phytoplankton, benthic diatoms, and organic matter derived from the sediment surface, seagrass, and seaweeds) to the clam diet were investigated. In particular, we investigated the manner in which dense patches of clams with high secondary productivity are sustained in a coastal lagoon ecosystem (Hichirippu Lagoon) in Hokkaido, Japan. Clam feeding behavior should affect material circulation in this lagoon owing to their high secondary productivity (ca. 130 g C m(−2) yr(−1)). Phytoplankton were initially found to constitute 14–77% of the clam diet, although phytoplankton nitrogen content (1.79–4.48 kmol N) and the food demand of the clam (16.2 kmol N d(–1)) suggest that phytoplankton can constitute only up to 28% of clam dietary demands. However, use of isotopic signatures alone may be misleading. For example, the contribution of microphytobenthos (MPB) were estimated to be 0–68% on the basis of isotopic signatures but was subsequently shown to be 35±13% (mean ± S.D.) and 64±4% (mean ± S.D.) on the basis of phytoplankton biomass and clam food demand respectively, suggesting that MPB are the primary food source for clams. Thus, in the present study, the abundant MPB in the subtidal area appear to be a key food source for clams, suggesting that these MPB may sustain the high secondary production of the clam.
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spelling pubmed-39049362014-01-31 Food Sources for Ruditapes philippinarum in a Coastal Lagoon Determined by Mass Balance and Stable Isotope Approaches Komorita, Tomohiro Kajihara, Rumiko Tsutsumi, Hiroaki Shibanuma, Seiichiro Yamada, Toshiro Montani, Shigeru PLoS One Research Article The relationship between the food demand of a clam population (Ruditapes philippinarum (Adams & Reeve 1850)) and the isotopic contributions of potential food sources (phytoplankton, benthic diatoms, and organic matter derived from the sediment surface, seagrass, and seaweeds) to the clam diet were investigated. In particular, we investigated the manner in which dense patches of clams with high secondary productivity are sustained in a coastal lagoon ecosystem (Hichirippu Lagoon) in Hokkaido, Japan. Clam feeding behavior should affect material circulation in this lagoon owing to their high secondary productivity (ca. 130 g C m(−2) yr(−1)). Phytoplankton were initially found to constitute 14–77% of the clam diet, although phytoplankton nitrogen content (1.79–4.48 kmol N) and the food demand of the clam (16.2 kmol N d(–1)) suggest that phytoplankton can constitute only up to 28% of clam dietary demands. However, use of isotopic signatures alone may be misleading. For example, the contribution of microphytobenthos (MPB) were estimated to be 0–68% on the basis of isotopic signatures but was subsequently shown to be 35±13% (mean ± S.D.) and 64±4% (mean ± S.D.) on the basis of phytoplankton biomass and clam food demand respectively, suggesting that MPB are the primary food source for clams. Thus, in the present study, the abundant MPB in the subtidal area appear to be a key food source for clams, suggesting that these MPB may sustain the high secondary production of the clam. Public Library of Science 2014-01-28 /pmc/articles/PMC3904936/ /pubmed/24489779 http://dx.doi.org/10.1371/journal.pone.0086732 Text en © 2014 Komorita et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Komorita, Tomohiro
Kajihara, Rumiko
Tsutsumi, Hiroaki
Shibanuma, Seiichiro
Yamada, Toshiro
Montani, Shigeru
Food Sources for Ruditapes philippinarum in a Coastal Lagoon Determined by Mass Balance and Stable Isotope Approaches
title Food Sources for Ruditapes philippinarum in a Coastal Lagoon Determined by Mass Balance and Stable Isotope Approaches
title_full Food Sources for Ruditapes philippinarum in a Coastal Lagoon Determined by Mass Balance and Stable Isotope Approaches
title_fullStr Food Sources for Ruditapes philippinarum in a Coastal Lagoon Determined by Mass Balance and Stable Isotope Approaches
title_full_unstemmed Food Sources for Ruditapes philippinarum in a Coastal Lagoon Determined by Mass Balance and Stable Isotope Approaches
title_short Food Sources for Ruditapes philippinarum in a Coastal Lagoon Determined by Mass Balance and Stable Isotope Approaches
title_sort food sources for ruditapes philippinarum in a coastal lagoon determined by mass balance and stable isotope approaches
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3904936/
https://www.ncbi.nlm.nih.gov/pubmed/24489779
http://dx.doi.org/10.1371/journal.pone.0086732
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