Effects of daily fluctuating temperatures on the Drosophila–Leptopilina boulardi parasitoid association

Autor: Emilie Delava, Frédéric Fleury, Patricia Gibert
Přispěvatelé: Génétique et évolution des interactions hôtes-parasites, Département génétique, interactions et évolution des génomes [LBBE] (GINSENG), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2016
Předmět:
0106 biological sciences
Physiology
Range (biology)
[SDE.MCG]Environmental Sciences/Global Changes
Wasps
[SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy
Parasitism
Biology
Diapause
Global Warming
010603 evolutionary biology
01 natural sciences
Biochemistry
Host-Parasite Interactions
Parasitoid
[SDV.EE.ECO]Life Sciences [q-bio]/Ecology
environment/Ecosystems
Animals
[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology
Entry into diapause
ComputingMilieux_MISCELLANEOUS
[SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE]
Ecology
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]
Temperature
Atmospheric temperature range
biology.organism_classification
010602 entomology
13. Climate action
Larva
Ectotherm
Drosophila
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
General Agricultural and Biological Sciences
Constant (mathematics)
[SDV.EE.IEO]Life Sciences [q-bio]/Ecology
environment/Symbiosis
Developmental Biology
Zdroj: Journal of Thermal Biology
Journal of Thermal Biology, Elsevier, 2016, 60, pp.95-102. ⟨10.1016/j.jtherbio.2016.06.012⟩
Journal of Thermal Biology, 2016, 60, pp.95-102. ⟨10.1016/j.jtherbio.2016.06.012⟩
ISSN: 0306-4565
DOI: 10.1016/j.jtherbio.2016.06.012
Popis: Koinobiont parasitoid insects, which maintain intimate and long-term relationships with their arthropod hosts, constitute an association of ectothermic organisms that is particularly sensitive to temperature variations. Because temperature shows pronounced natural daily fluctuations, we examined if experiments based on a constant temperature range can mask the real effects of the thermal regime on host-parasitoid interactions. The effects of two fluctuating thermal regimes on several developmental parameters of the Drosophila larval parasitoid Leptopilina boulardi were analyzed in this study. Regime 1 included a range of 16–23–16 °C and regime 2 included a range of 16–21–26–21–16 °C (mean temperature 20.1 °C) compared to a 20.1 °C constant temperature. Under an average temperature of 20.1 °C, which corresponds to a cold condition of L. boulardi development, we showed that the success of parasitism is significantly higher under a fluctuating temperature regime than at constant temperature. A fluctuating regime also correlated with a reduced development time of the parasitoids. In contrast, the thermal regime did not affect the ability of Drosophila to resist parasitoid infestation. Finally, we demonstrated that daily temperature fluctuation prevented the entry into diapause for this species, which is normally observed at a constant temperature of 21 °C. Overall, the results reveal that constant temperature experiments can produce misleading results, highlighting the need to study the thermal biology of organisms under fluctuating regimes that reflect natural conditions as closely as possible. This is particularly a major issue in host-parasitoid associations, which constitute a good model to understand the effect of climate warming on interacting species.
Databáze: OpenAIRE
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