Tidal variability of biochemical composition of spm and feeding environment of manila clam, Ruditapes Philippinarum in Banzu Intertidal Sand Flat, Japan

Masashi Kodama, Satoshi Watanabe, Satoshi Katayama, Mitsuharu Toba, Kaoru Nakata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Variability during the tidal cycle of the biochemical composition and phytopigment content of suspended particulate matter (SPM) in the bottom water were investigated in the Banzu Intertidal Sand Flat, Tokyo Bay, Japan in relation to the feeding environment and diet of Manila clam, Ruditapes phillippinarum. Biochemical composition of SPM in the bottom water showed large tidal variations, such as the ratio of phytopigment content to SPM (Phy/SPM ratio) and particulate organic carbon (Phy/POC ratio) were both higher during high tide periods compared to low tide periods. Therefore, it was considered that high tide periods form a suitable food environment for the clam. The results also indicated that phytoplankton which is transported from offshore at high tide is an important food source for the clam. In addition, results of stable isotope analyses indicated that R. phillippinarum selectively intakes SPM during high tide periods and assimilate selected components among the SPM.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Asian and Pacific Coasts, APAC 2009
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages272-278
Number of pages7
ISBN (Print)9814287962, 9789814287968
Publication statusPublished - 2010 Jan 1
Externally publishedYes
Event5th International Conference on Asian and Pacific Coasts, APAC 2009 - Singapore, Singapore
Duration: 2009 Oct 132009 Oct 16

Publication series

NameProceedings of the 5th International Conference on Asian and Pacific Coasts, APAC 2009
Volume1

Other

Other5th International Conference on Asian and Pacific Coasts, APAC 2009
CountrySingapore
CitySingapore
Period09/10/1309/10/16

ASJC Scopus subject areas

  • Ocean Engineering

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  • Cite this

    Kodama, M., Watanabe, S., Katayama, S., Toba, M., & Nakata, K. (2010). Tidal variability of biochemical composition of spm and feeding environment of manila clam, Ruditapes Philippinarum in Banzu Intertidal Sand Flat, Japan. In Proceedings of the 5th International Conference on Asian and Pacific Coasts, APAC 2009 (pp. 272-278). (Proceedings of the 5th International Conference on Asian and Pacific Coasts, APAC 2009; Vol. 1). World Scientific Publishing Co. Pte Ltd.