Bees remain heat tolerant after acute exposure to desiccation and starvation DOI Creative Commons
Víctor H. González, Wesley Rancher, Rylee Vigil

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(24)

Published: Dec. 15, 2024

ABSTRACT Organisms may simultaneously face thermal, desiccation and nutritional stress under climate change. Understanding the effects arising from interactions among these stressors is relevant for predicting organisms' responses to change developing effective conservation strategies. Using both dynamic static protocols, we assessed first time how sublethal exposure (at 16.7%, 50.0% 83.3% of LD50) impacts heat tolerance foragers two social bee species found on Greek island Lesbos: managed European honey bee, Apis mellifera, wild, ground-nesting sweat Lasioglossum malachurum. In addition, explored a short-term starvation period (24 h), followed by moderate (50% LD50), influences tolerance. We that neither critical thermal maximum (CTmax) nor stupor was significantly impacted in either species. Similarly, did not affect average CTmax estimate, but it increase its variance. Our results suggest environmental always lead significant changes bees' or vulnerability rapid temperature during extreme weather events, such as waves. However, variance suggests greater variability individual change, which impact colony-level performance. The ability withstand be unmeasured hypoxic conditions overall effect solitary remains assessed.

Language: Английский

Hormetic response to pesticides in diapausing bees DOI
Etya Amsalem, Nathan Derstine,

Cameron Murray

et al.

Biology Letters, Journal Year: 2025, Volume and Issue: 21(1)

Published: Jan. 1, 2025

Pollinators face declines and diversity loss associated with multiple stressors, particularly pesticides. Most pollination services are provided by annual bees that undergo winter diapause, many common pesticides highly soluble in water move through soil plants where hibernate feed, yet the effects of on pollinators’ diapause survival performance poorly understood. Pesticides may have complex bees, some were shown to induce hormetic various traits characterized high-dose inhibition coupled low-dose stimulation. Here, we examined occurrence hormesis responses imidacloprid. We found while longevity reproduction reduced following exposure imidacloprid, length new queens (gynes) was greater. Diapause is a critical period life cycle most profound their health. Exposure sublethal doses increase bees’ resistance stress/cold during but also trade off reproductive later life. Identifying these trade-offs crucial understanding how stressors affect pollinator health should be accounted for when assessing pesticide risk, designing studies facilitating conservation management tools supporting diapause.

Language: Английский

Citations

0
Bumble bees lose more water when it's drier and hotter DOI
Jordan R. Glass

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(13)

Published: July 1, 2024

Language: Английский

Citations

0
Bees remain heat tolerant after acute exposure to desiccation and starvation DOI Creative Commons
Víctor H. González, Wesley Rancher, Rylee Vigil

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(24)

Published: Dec. 15, 2024

ABSTRACT Organisms may simultaneously face thermal, desiccation and nutritional stress under climate change. Understanding the effects arising from interactions among these stressors is relevant for predicting organisms' responses to change developing effective conservation strategies. Using both dynamic static protocols, we assessed first time how sublethal exposure (at 16.7%, 50.0% 83.3% of LD50) impacts heat tolerance foragers two social bee species found on Greek island Lesbos: managed European honey bee, Apis mellifera, wild, ground-nesting sweat Lasioglossum malachurum. In addition, explored a short-term starvation period (24 h), followed by moderate (50% LD50), influences tolerance. We that neither critical thermal maximum (CTmax) nor stupor was significantly impacted in either species. Similarly, did not affect average CTmax estimate, but it increase its variance. Our results suggest environmental always lead significant changes bees' or vulnerability rapid temperature during extreme weather events, such as waves. However, variance suggests greater variability individual change, which impact colony-level performance. The ability withstand be unmeasured hypoxic conditions overall effect solitary remains assessed.

Language: Английский

Citations

0