Temporal dynamics in the diet of two marine polychaetes as inferred from fatty acid biomarkers

Braeckman, U.; Provoost, P.; Sabbe, K.; Soetaert, K.; Middelburg, J.J.; Vincx, M.; Vanaverbeke, J.

doi:/10.1016/j.seares.2011.11.003

Integrated Marine Information System (IMIS)

Data Policy

Persons | Institutes | Publications | Projects | Datasets

[ report an error in this record ]

basket (0): add | show

Temporal dynamics in the diet of two marine polychaetes as inferred from fatty acid biomarkers

Braeckman, U.; Provoost, P.; Sabbe, K.; Soetaert, K.; Middelburg, J.J.; Vincx, M.; Vanaverbeke, J. (2012). Temporal dynamics in the diet of two marine polychaetes as inferred from fatty acid biomarkers. J. Sea Res. 68: 6-19. dx.doi.org/10.1016/j.seares.2011.11.003

In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414

Available in	Authors
VLIZ: Open Marine Archive 230053 [ download pdf ] NIOZ: NIOZ files 254923

Keywords

Algal blooms
Aquatic communities > Plankton > Phytoplankton
Biomarkers
Blooms
Chemical compounds > Organic compounds > Lipids
Macrobenthos
Lanice conchilega (Pallas, 1766) [WoRMS]; Nephtys hombergii Savigny in Lamarck, 1818 [WoRMS]
Marine/Coastal

Author keywords

Macrobenthos; Phytoplankton Bloom; Lipid Biomarker; Lanice conchilega;Nephtys hombergii

Authors		Top
Braeckman, U., more Provoost, P., more Sabbe, K., more Soetaert, K.	Middelburg, J.J. Vincx, M., more Vanaverbeke, J., more

Abstract

We investigated the temporal variation of pelagic and benthic food sources in the diet of two marine polychaetes: a macrobenthic omnivore (Nephtys hombergii) and a suspension-deposit feeder (Lanice conchilega) by means of fatty acid (FA) biomarkers and compound-specific stable isotope analysis (CSIA). FA biomarkers in the suspended particulate matter roughly mirrored phytoplankton dynamics in the water column, consisting of a small diatom dominance early spring, succeeded by a mass Phaeocystis peak followed by a mixed diatom-dinoflagellate bloom. Deposition and subsequent bacterial degradation of the phytoplankton bloom were also reflected in sediment FA biomarkers. The main distinction in FA biomarker concentration within macrobenthic tissue was observed at the species level (48% of variation), the diet of L. conchilega consisting of bacteria and diatoms and that of N. hombergii also of diatoms, but including more dinoflagellates and invertebrates. Temporal variation explained 17%: the two species retained more bacterial and Phaeocystis markers before the bloom, while they accumulated more poly-unsaturated FA after the bloom. CSIA revealed increased accumulation or biosynthesis of poly-unsaturated FA from the suspended matter in L. conchilega upon bloom deposition, which is probably related to energy storage for gametogenesis. In contrast, bloom-dependent accumulation or biosynthesis of FA was not detected in N. hombergii, probably because of its reliance on invertebrate prey.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy

Top | Authors

[Back]

Integrated Marine Information System (IMIS)

WoRMS

Using WoRMS

Tools

Connect with us