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Dietary lipid changes during herbivory and coprophagy by the marine invertebrate Nereis diversicolor

Published online by Cambridge University Press:  11 May 2009

Stuart A. Bradshaw ,
Sean C. M. O'Hara ,
Eric D. S. Corner  and
Geoffrey Eglinton
Stuart A. Bradshaw
Affiliation:
Organic Geochemistry Unit, University of Bristol, Cantock' Close, Bristol, BS8 ITS
Sean C. M. O'Hara
Affiliation:
Marine Biological Association of the UK, Citadel Hill, Plymouth, PL1 2PB
Eric D. S. Corner
Affiliation:
Marine Biological Association of the UK, Citadel Hill, Plymouth, PL1 2PB
Geoffrey Eglinton
Affiliation:
Organic Geochemistry Unit, University of Bristol, Cantock' Close, Bristol, BS8 ITS
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Extract

Changes in dietary lipids (fatty acids, sterols and fatty alcohols) during herbivory and coprophagy by the annelid worm Hediste (Nereis) diversicolor (O.F. Müller) were modelled in laboratory feeding experiments. The dinoflagellate Scrippsiella trochoidea (Stein) was used as the food in herbivory; faeces from the crustacean Neomysis integer (Leach) after feeding on this same alga, were used as the food in coprophagy.

Nereis is extremely efficient in its assimilation of dietary lipids and produces faeces with very low fatty acid:sterol (FAST) ratios in both herbivory and coprophagy. The net decrease in total lipid in both modes of feeding with this species suggests that annelids, where present, are as important as other invertebrate groups in affecting the flux of lipids through marine food chains.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 70 , Issue 4 , November 1990 , pp. 771 - 787
Copyright
Copyright © Marine Biological Association of the United Kingdom 1990

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