title: Higher temperature exacerbates the impact of sediments on embryo performances in a salmonid.
abstract: In a warming climate, higher temperatures are likely to modulate positively or negatively the effect of other environmental factors on biota, although such interactions are poorly documented. Here, we explore under controlled conditions the combined effects of two common stressors in freshwater ecosystems, higher temperature and sediment load, on the embryonic development of arctic charr (Salvelinus alpinus L.). In the warm treatment, embryos had a lower survival, a longer incubation period and a smaller body size with a bigger yolk sac volume. Our data show a significant interaction between temperature and sediment load with temperature increasing dramatically the negative effects of sediment load on fitness-related traits. In the climate change context, these findings highlight the importance of taking into account different thermal scenarios when examining the effect of environmental or anthropogenic stressors.
authors.affiliation: UMR CARRTEL INRA/USMB, 74203 Thonon-les-Bains Cedex, France.
authors.forename: Lisandrina
authors.initials: L
authors.lastname: Mari
authors.affiliation: UMR CARRTEL INRA/USMB, 74203 Thonon-les-Bains Cedex, France.
authors.forename: Laura
authors.initials: L
authors.lastname: Garaud
authors.affiliation: UMR ESE INRA/Agrocampus Ouest, 35042 Rennes Cedex, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Evanno
authors.affiliation: UMR CARRTEL INRA/USMB, 74203 Thonon-les-Bains Cedex, France emilien.lasne@inra.fr.
authors.forename: Emilien
authors.identifier: 0000-0001-5289-4542
authors.initials: E
authors.lastname: Lasne
mesh_terms: D000818:Animals; D049628:Body Size / Q000502:physiology; D004625:Embryo, Nonmammalian / Q000502:physiology; D019015:Geologic Sediments; D006358:Hot Temperature; D060106:Lakes; D013997:Time Factors; D014337:Trout / Q000196:embryology*; D014873:Water Pollutants; D015017:Yolk Sac
chemical_list: D014873:Water Pollutants
keywords: fish; global change; hypoxia; multistress; thermal stress