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Article Dans Une Revue Philosophical Transactions of the Royal Society B: Biological Sciences Année : 2020

Stable isotopes of fatty acids: current and future perspectives for advancing trophic ecology

Cornelia Twining
  • Fonction : Auteur
Sami Taipale
Liliane Ruess
  • Fonction : Auteur
Dominik Martin-Creuzburg
  • Fonction : Auteur
Martin Kainz
  • Fonction : Auteur

Résumé

To understand consumer dietary requirements and resource use across ecosystems, researchers have employed a variety of methods, including bulk stable isotope and fatty acid composition analyses. Compound-specific stable isotope analysis (CSIA) of fatty acids combines both of these tools into an even more powerful method with the capacity to broaden our understanding of food web ecology and nutritional dynamics. Here, we provide an overview of the potential that CSIA studies hold and their constraints. We first review the use of fatty acid CSIA in ecology at the natural abundance level as well as enriched physiological tracers, and highlight the unique insights that CSIA of fatty acids can provide. Next, we evaluate methodological best practices when generating and interpreting CSIA data. We then introduce three cutting-edge methods: hydrogen CSIA of fatty acids, and fatty acid isotopomer and isotopologue analyses, which are not yet widely used in ecological studies, but hold the potential to address some of the limitations of current techniques. Finally, we address future priorities in the field of CSIA including: generating more data across a wider range of taxa; lowering costs and increasing laboratory availability; working across disciplinary and methodological boundaries; and combining approaches to answer macroevolutionary questions. This article is part of the theme issue ‘The next horizons for lipids as ‘trophic biomarkers’: evidence and significance of consumer modification of dietary fatty acids’.

Dates et versions

hal-03227630 , version 1 (17-05-2021)

Identifiants

Citer

Cornelia Twining, Sami Taipale, Liliane Ruess, Alexandre Bec, Dominik Martin-Creuzburg, et al.. Stable isotopes of fatty acids: current and future perspectives for advancing trophic ecology. Philosophical Transactions of the Royal Society B: Biological Sciences, 2020, 375 (1804), pp.20190641. ⟨10.1098/rstb.2019.0641⟩. ⟨hal-03227630⟩
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