Bet-hedging in parasitoids: when optimization is not the best strategy to cope with climatic extremes.
| Autor: | van Baaren J; Université de Rennes, CNRS, ECOBIO (écosystèmes, biodiversité, évolution) - UMR 6553, 263 Avenue du Général Leclerc, 35042 Rennes, France., Boivin G; Horticultural Research and Development Centre, Agriculture and Agrifood Canada, 430 Boul. Gouin, St-Jean-sur-Richelieu, Quebec, Canada, J3B 3E6., Visser B; Evolution and Ecophysiology Group, Department of Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium., Le Lann C; Université de Rennes, CNRS, ECOBIO (écosystèmes, biodiversité, évolution) - UMR 6553, 263 Avenue du Général Leclerc, 35042 Rennes, France. |
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| Jazyk: | angličtina |
| Zdroj: | Current research in insect science [Curr Res Insect Sci] 2024 Feb 20; Vol. 5, pp. 100076. Date of Electronic Publication: 2024 Feb 20 (Print Publication: 2024). |
| DOI: | 10.1016/j.cris.2024.100076 |
| Abstrakt: | Bet-hedging occurs when unreliable environments select for genotypes exhibiting a lower variance in fitness at the cost of a lower mean fitness for each batch of progeny. This means that at the level of the genotype, the production of mostly non-optimal phenotypes may be favored when at least some phenotypes are successful. As extreme unreliable climatic events are increasing because of climate change, it is pertinent to investigate the potential of bet-hedging strategies that allow insects to cope with climate change. Evidence for bet-hedging is scarce in most insects, including parasitoids, but the unique lifestyle and biology of parasitoids leads to the expectation that bet-hedging may occur frequently. Here, we evaluate a range of parasitoid traits for which a bet-hedging strategy could be envisioned even if bet-hedging has not been identified as such yet. Under-identification of bet-hedging in nature could have resulted from a major focus of studies on parasitoid life history evolution and foraging behavior on optimality models, predicting how mean fitness can be maximized. Most environmental factors, however, vary unpredictably. Life history and behavioral adaptations are thus expected to be affected by environmental stochasticity. In this paper, we review different aspects of parasitoid behavior, physiology, and life histories and ask the question whether parasitoid traits could have evolved under selection by environmental stochasticity. Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (© 2024 The Author(s).) |
| Databáze: | MEDLINE |
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