How to stand the heat? Post-stress nutrition and developmental stage determine insect response to a heat wave
| Autor: | Denis Thiéry, Corentin Iltis, Jérôme Moreau, Philippe Louâpre, Fanny Vogelweith |
|---|---|
| Přispěvatelé: | Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), M2i Biocontrol, Santé et agroécologie du vignoble (UMR SAVE), Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Physiology media_common.quotation_subject European grapevine moth [SDE.MCG]Environmental Sciences/Global Changes Zoology Stage-specific effects Context (language use) Insect Biology Moths Lobesia botrana 01 natural sciences 03 medical and health sciences Heat wave Larval nutrition Climate change Animals media_common Larva Developmental stage fungi Age Factors Immunity Metamorphosis Biological biology.organism_classification 010602 entomology 030104 developmental biology 13. Climate action Insect Science Instar Animal Nutritional Physiological Phenomena [SDE.BE]Environmental Sciences/Biodiversity and Ecology Food quality Heat-Shock Response |
| Zdroj: | Journal of Insect Physiology Journal of Insect Physiology, Elsevier, 2021, 131, pp.1-12. ⟨10.1016/j.jinsphys.2021.104214⟩ |
| ISSN: | 1879-1611 0022-1910 |
| Popis: | 12 pages; International audience; Organisms are increasingly confronted with intense and long-lasting heat waves. In insects, the effects of heat waves on individual performance can vary in magnitude both within (e.g. from one larval instar to another) and between life stages. However, the reasons underlying these stage-dependent effects are not fully understood. There are several lines of evidence suggesting that individual ability to withstand a heat stress depends on mechanisms based on nutrition and supporting energetically physiological stress responses. Hence, we tested the hypothesis that the efficiency of these food-based buffering mechanisms may vary between different larval instars of a phytophagous insect. Using larvae of the moth Lobesia botrana, we examined the importance of post-stress food quality in insect response to a non-lethal heat wave at two distinct larval instars. Three major conclusions were drawn from this work. First, heat waves induced an overall decline in larval performance (delayed development, depressed immunity). Second, food quality primarily mediated the insect's ability to respond to the heat stress: the reduction in performance following heat wave application was mostly restricted to individuals with access to low-quality food after the heat stress. Third, larval instars differed in their susceptibility to this combination of thermal and food stressors, but conclusions about the instar being the most vulnerable differed in a trait-specific manner. In a global warming context, this study may shed additional light on the combination of direct and indirect (through alteration of plant nutritional value) effects of rising temperatures on the ecology and the evolution of phytophagous insects. |
| Databáze: | OpenAIRE |
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