Lipid-correction models for δ 13 C values across small pelagic fishes (Clupeiformes) from the Atlantic Ocean.

Autor: Sardenne F; IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280, Plouzané, France. Electronic address: fany.sardenne@univ-brest.fr., Raynon T; IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280, Plouzané, France., Munaron JM; IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280, Plouzané, France., van der Lingen CD; Department of Forestry, Fisheries and the Environment (DFFE), Cape Town, South Africa., Sadio O; IRD, Univ Brest, CNRS, Ifremer, LEMAR, Dakar, Senegal., Diop K; IRD, Univ Brest, CNRS, Ifremer, LEMAR, Dakar, Senegal., Brosset P; UMR DECOD, Ifremer, INRAE, L'Institut Agro, Plouzané, France., Lebigre C; UMR DECOD, Ifremer, INRAE, L'Institut Agro, Plouzané, France., Soudant P; IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280, Plouzané, France., Vagner M; IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280, Plouzané, France., Pecquerie L; IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280, Plouzané, France.
Jazyk: angličtina
Zdroj: Marine environmental research [Mar Environ Res] 2023 Nov; Vol. 192, pp. 106213. Date of Electronic Publication: 2023 Sep 26.
DOI: 10.1016/j.marenvres.2023.106213
Abstrakt: The interpretation of δ 13 C values in trophic ecology requires standardization of the lipid content of organisms estimated through their C:N ratio. To avoid time-consuming lipid extractions, the use of mathematical corrections has been developed for many years, and the conclusions generally point in the direction of species-specific adjustment of the models. This study aimed at defining the maximum taxonomic level required to obtain the best corrected δ 13 C values in small pelagic fish of the order Clupeiformes. δ 13 C values of six species were analyzed bulk and lipid-free, and were used to fit and validate linear and mass-balance models at different taxonomic levels. Despite a species effect combined with the C:N ratio effect, the corrected δ 13 C values produced by a global model for the Clupeiformes were as good as or better when compared to lipid-free samples than those produced by species-specific models, paving the way for possible generalization to other species in this order. At the order level, the linear model outperformed the mass-balance model.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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