Changes in the Fatty Acid Composition of Hepatopancreas of the Mollusk Mytilus trossulus Fed on Microalgae

Changes in the Fatty Acid Composition of Hepatopancreas of the Mollusk Mytilus trossulus Fed on... The influence of diet on the fatty acid composition of the hepatopancreas of Mytilus trossulus was studied. Three groups of mollusks were fed monocultures of the microalgae Phaeodactylum tricornutum, Chaetoceros muelleri (Bacillariophyceae), and Nannochloropsis sp. (Eustigmatophyceae) for 10 days. After 10 days, the proportion of polyunsaturated fatty acids, mainly eicosapentaenoic and docosahexaenoic, increased in the total lipids of the hepatopancreas in all mollusk groups. The content of saturated fatty acids in the mussel tissues decreased and was not dependent on the amount in the algal diet. Toward the end of the experiment, the fatty acid composition of the hepatopancreas of mussels was similar irrespective of the fatty acid composition of their food. The fatty acid analysis of M. trossulus feces suggests a selective assimilation by mussels of predominantly the n-3 polyunsaturated fatty acids. The role of fatty acid metabolism in M. trossulus is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Changes in the Fatty Acid Composition of Hepatopancreas of the Mollusk Mytilus trossulus Fed on Microalgae

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1023/B:RUMB.0000011706.89867.ec
Publisher site
See Article on Publisher Site

Abstract

The influence of diet on the fatty acid composition of the hepatopancreas of Mytilus trossulus was studied. Three groups of mollusks were fed monocultures of the microalgae Phaeodactylum tricornutum, Chaetoceros muelleri (Bacillariophyceae), and Nannochloropsis sp. (Eustigmatophyceae) for 10 days. After 10 days, the proportion of polyunsaturated fatty acids, mainly eicosapentaenoic and docosahexaenoic, increased in the total lipids of the hepatopancreas in all mollusk groups. The content of saturated fatty acids in the mussel tissues decreased and was not dependent on the amount in the algal diet. Toward the end of the experiment, the fatty acid composition of the hepatopancreas of mussels was similar irrespective of the fatty acid composition of their food. The fatty acid analysis of M. trossulus feces suggests a selective assimilation by mussels of predominantly the n-3 polyunsaturated fatty acids. The role of fatty acid metabolism in M. trossulus is discussed.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Oct 12, 2004

References

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