The composition of fatty acids and stable isotopes in the detritophage Acila insignis (Gould, 1861) (Bivalvia: Nuculidae): Searching for markers of a microbial food web

The composition of fatty acids and stable isotopes in the detritophage Acila insignis (Gould,... The fatty acid composition and stable isotope ratios of carbon, nitrogen, and sulfur were analyzed in the protobranch bivalve Acila insignis, a selective detritophage inhabiting subtidal sand sediments of Vostok Bay (Sea of Japan). Soft tissues of A. insignis contained abnormally high concentrations of the polyunsaturated arachidonic acid, 20: 4(n-6), and a rare monounsaturated fatty acid 20: 1(n-13), which distinguishes this species from other bivalves. The high concentrations of these fatty acids in A. insignis, together with the low values of σ34S and the high values of σ13C and σ15N, are probably a result of feeding on the microbial food web. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

The composition of fatty acids and stable isotopes in the detritophage Acila insignis (Gould, 1861) (Bivalvia: Nuculidae): Searching for markers of a microbial food web

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Publisher
Springer Journals
Copyright
Copyright © 2011 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S1063074011030060
Publisher site
See Article on Publisher Site

Abstract

The fatty acid composition and stable isotope ratios of carbon, nitrogen, and sulfur were analyzed in the protobranch bivalve Acila insignis, a selective detritophage inhabiting subtidal sand sediments of Vostok Bay (Sea of Japan). Soft tissues of A. insignis contained abnormally high concentrations of the polyunsaturated arachidonic acid, 20: 4(n-6), and a rare monounsaturated fatty acid 20: 1(n-13), which distinguishes this species from other bivalves. The high concentrations of these fatty acids in A. insignis, together with the low values of σ34S and the high values of σ13C and σ15N, are probably a result of feeding on the microbial food web.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Jul 8, 2011

References

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