0000000000277474

AUTHOR

Alexandre Bec

0000-0003-4353-3766

showing 3 related works from this author

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

2020

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 p…

0106 biological sciencesFood ChainEcology (disciplines)010603 evolutionary biology01 natural sciencesGeneral Biochemistry Genetics and Molecular BiologyTrophic levelIsotope analysis2. Zero hungerchemistry.chemical_classificationCarbon IsotopesEcologyNitrogen IsotopesStable isotope ratioEcology010604 marine biology & hydrobiologyFatty AcidsFatty acidArticlesDeuteriumFood webDietary Requirementschemistry13. Climate action[SDE]Environmental SciencesEnvironmental scienceResource use[SDE.BE]Environmental Sciences/Biodiversity and EcologyGeneral Agricultural and Biological Sciences
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High food quality increases infection of Gammarus pulex (Crustacea: Amphipoda) by the acanthocephalan parasite Pomphorhynchus laevis.

2019

13 pages; International audience; Parasitism is an important process in ecosystems, but has been largely neglected in ecosystem research. However, parasites are involved in most trophic links in food webs with, in turn, a major role in community structure and ecosystem processes. Several studies have shown that higher nutrient availability in ecosystems tends to increase the prevalence of parasites. Yet, most of these studies focused on resource availability, whereas studies investigating resource quality remain scarce. In this study, we tested the impact of the quality of host food resources on infection by parasites, as well as on the consequences for the host. Three resources were used t…

0301 basic medicineMaleAmphipodaTime FactorsSurvivalgrowth030231 tropical medicineVideo RecordingParasitismZoologyKaplan-Meier Estimatefood qualityParasite LoadAcanthocephalaFood SupplyHost-Parasite Interactions03 medical and health sciences0302 clinical medicineRiversEcological stoichiometryAnimalsEcosystemAmphipoda[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/ParasitologyEcosystemTrophic level2. Zero hungerBehaviorExperimental infestationecological stoichiometrybiologyPlant litterbiology.organism_classificationParasiteGammarus pulex030104 developmental biologyInfectious DiseasesRegression AnalysisParasitologyPomphorhynchus laevisFemale[SDE.BE]Environmental Sciences/Biodiversity and EcologyLocomotion[SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis
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Additional Figures and Tables from Stable isotopes of fatty acids: current and future perspectives for advancing trophic ecology

2020

Supplementary Table 1 and Supplementary Figures 1-2

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