Affiliation:
1. Laboratoire Écologie et Biologie des Interactions—UMR CNRS 7267, Laboratoire EBI—Équipe Écologie Évolution Symbiose Université de Poitiers Poitiers France
2. UE 1255 Abeilles, Paysages, Interactions et Systèmes de culture,Station du Magneraud, Institut national de recherche pour l'agriculture, l'alimentation et l'environnement Surgères France
3. Université Paris‐Saclay CNRS, IRD, UMR Évolution Génomes, Comportement et Écologie Gif‐sur‐Yvette France
Abstract
AbstractApis mellifera was used as a model species for ecotoxicological testing. In the present study, we tested the effects of acetone (0.1% in feed), a solvent commonly used to dissolve pesticides, on bees exposed at different developmental stages (larval and/or adult). Moreover, we explored the potential effect of in vitro larval rearing, a commonly used technique for accurately monitoring worker exposure at the larval stage, by combining acetone exposure and treatment conditions (in vitro larval rearing vs. in vivo larval rearing). We then analyzed the life‐history traits of the experimental bees using radio frequency identification technology over three sessions (May, June, and August) to assess the potential seasonal dependence of the solvent effects. Our results highlight the substantial influence of in vitro larval rearing on the life cycle of bees, with a 47.7% decrease in life span, a decrease of 0.9 days in the age at first exit, an increase of 57.3% in the loss rate at first exit, and a decrease of 40.6% in foraging tenure. We did not observe any effect of exposure to acetone at the larval stage on the capacities of bees reared in vitro. Conversely, acetone exposure at the adult stage reduced the bee life span by 21.8% to 60%, decreased the age at first exit by 1.12 to 4.34 days, and reduced the foraging tenure by 30% to 37.7%. Interestingly, we found a significant effect of season on acetone exposure, suggesting that interference with the life‐history traits of honey bees is dependent on season. These findings suggest improved integration of long‐term monitoring for assessing sublethal responses in bees following exposure to chemicals during both the larval and adult stages. Environ Toxicol Chem 2024;43:1320–1331. © 2024 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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