FN Archimer Export Format PT J TI Fatty acid composition differs between emergent aquatic and terrestrial insects—A detailed single system approach BT AF Parmar, Tarn Preet Kindinger, Alina L. MATHIEU-RESUGE, Margaux Twining, Cornelia W. Shipley, Jeremy Ryan Kainz, Martin J. Martin-Creuzburg, Dominik AS 1:1;2:1;3:2,3,4;4:1,5,6;5:6;6:2,7;7:8; FF 1:;2:;3:;4:;5:;6:;7:; C1 Department of Biology, Limnological Institute, University of Konstanz, Konstanz, Germany WasserCluster Lunz—Inter-University Centre for Aquatic Ecosystem Research, University of Vienna, Lunz am See, Austria Université de Brest, CNRS, IRD, Ifremer, LEMAR, Plouzané, France UMR DECOD (Ecosystem Dynamics and Sustainability), Ifremer, INRAE, Institut Agro, Plouzané, France Max Planck Institute of Animal Behavior, Radolfzell, Germany Department of Fish Ecology and Evolution, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland Department of Biomedical Research, Danube University Krems, Krems an der Donau, Austria Department of Aquatic Ecology, Research Station Bad Saarow, Brandenburg University of Technology Cottbus–Senftenberg, Bad Saarow, Germany C2 UNIV KONSTANZ, GERMANY UNIV VIENNA, AUSTRIA UBO, FRANCE IFREMER, FRANCE MAX PLANCK INST ANIMAL BEHAVIOR, GERMANY EAWAG, SWITZERLAND UNIV KREMS, AUSTRIA UNIV BRANDENBURG, GERMANY SI BREST SE PDG-RBE-HALGO-LBH UM LEMAR DECOD IN WOS Ifremer UMR WOS Cotutelle UMR DOAJ copubli-france copubli-europe copubli-univ-france copubli-int-hors-europe IF 3 TC 13 UR https://archimer.ifremer.fr/doc/00788/89988/95529.pdf https://archimer.ifremer.fr/doc/00788/89988/95530.docx https://archimer.ifremer.fr/doc/00788/89988/95531.xlsx LA English DT Article DE ;alpha-linolenic acid;aquatic subsidies;arachidonic acid;Diptera;eicosapentaenoic acid;insect emergence;seasonality AB Emergent insects represent a key vector through which aquatic nutrients are transferred to adjacent terrestrial food webs. Aquatic fluxes of polyunsaturated fatty acids (PUFA) from emergent insects are particularly important subsidies for terrestrial ecosystems due to high PUFA contents in several aquatic insect taxa and their physiological importance for riparian predators. While recent meta-analyses have shown the general dichotomy in fatty acid profiles between aquatic and terrestrial ecosystems, differences in fatty acid profiles between aquatic and terrestrial insects have been insufficiently explored. We examined the differences in fatty acid profiles between aquatic and terrestrial insects at a single aquatic-terrestrial interface over an entire growing season to assess the strength and temporal consistency of the dichotomy in fatty acid profiles. Non-metric multidimensional scaling clearly separated aquatic and terrestrial insects based on their fatty acid profiles regardless of season. Aquatic insects were characterized by high proportions of long-chain PUFA, such as eicosapentaenoic acid (20:5n-3), arachidonic acid (20:4n-6), and α-linolenic acid (18:3n-3); whereas terrestrial insects were characterized by high proportions of linoleic acid (18:2n-6). Our results provide detailed information on fatty acid profiles of a diversity of aquatic and terrestrial insect taxa and demonstrate that the fundamental differences in fatty acid content between aquatic and terrestrial insects persist throughout the growing season. However, the higher fatty acid dissimilarity between aquatic and terrestrial insects in spring and early summer emphasizes the importance of aquatic emergence as essential subsidies for riparian predators especially during the breading season. PY 2022 PD AUG SO Frontiers In Ecology And Evolution SN 2296-701X PU Frontiers Media SA VL 10 UT 000848033000001 DI 10.3389/fevo.2022.952292 ID 89988 ER EF