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Fatty acid trophic markers and trophic links among seston, crustaceanzooplankton and the siphonophore Nanomia cara in Georges Basin and Oceanographer Canyon (NWAtlantic)

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Date Issued:
2008
Title: Fatty acid trophic markers and trophic links among seston, crustaceanzooplankton and the siphonophore Nanomia cara in Georges Basin and Oceanographer Canyon (NWAtlantic).
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Name(s): Rossi, S.
Youngbluth, Marsh J.
Jacoby, C. A.
Pages, F.
Garrofe, X.
Type of Resource: text
Genre: Article
Date Issued: 2008
Publisher: Consejo Superior de Investigaciones Científicas
Place of Publication: Barcelona, Spain
Physical Form: pdf
Extent: 15 p.
Language(s): English
Identifier: FA00007246 (IID), 10.3989/scimar.2008.72n2403 (doi)
Note(s): Fatty acid concentrations expressed as percentages of total fatty acid pools in seston, stage V copepodites of Calanus finmarchicus, adults of the euphausiid Meganyctiphanes norvegica, and the physonect siphonophore Nanomia cara were used to elucidate trophic links in Georges Basin and Oceanographer Canyon in September 2003. Seston at both locations was refractory and comprised mainly of saturated fatty acids. Phytoplankton did not contribute significantly to the fatty acid composition of seston or higher trophic levels. Only four fatty acids, i.e. 14:0, 16:0, 16:1 (n–7) and 18:1 (n–7), were transferred from seston to C. finmarchicus or M. norvegica, which suggested weak trophic interactions. Fatty acids transferred from the two species of crustaceans to N. cara included the same four fatty acids, along with three polyunsaturated fatty acids found in relatively high concentrations in both crustaceans, i.e. 20:3 (n–6), 20:5 (n–3) and 22:6 (n–3). In addition, 18:1 (n–9), which occurred in relatively high concentrations only in M. norvegica, and 18:0 and 18:2 (n–6), which were found in low concentrations in both crustaceans, also appeared to be transferred to N. cara. Overall, fatty acid trophic markers proved useful for identifying trophic links to N. cara.
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 1696
This manuscript is an author version with the final publication available and may be cited as: Rossi, S., Youngbluth, M. J., Jacoby, C. A., Pages, F., & Garrofe, X. (2008). Fatty acid trophic markers and trophic links among seston, crustacean zooplankton and the siphonophore Nanomia cara in Georges Basin and Oceanographer Canyon (NW Atlantic). Scientia Marina, 72(2), 403-416.
Subject(s): Maine, Gulf of
Siphonophores
Fatty acids
Food chains (Ecology)
Persistent Link to This Record: http://purl.flvc.org/fau/fd/FA00007246
Links: http://dx.doi.org/10.3989/scimar.2008.72n2403
Host Institution: FAU