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| DOI | 10.3389/fevo.2024.1405459 |
| Stingless bee foragers experience more thermally stressful microclimates and have wider thermal tolerance breadths than other worker subcastes | |
| 发表日期 | 2024 |
| ISSN | 2296-701X |
| 起始页码 | 12 |
| 卷号 | 12 |
| 英文摘要 | Introduction: The current state of anthropogenic climate change is particularly concerning for tropical insects, species predicted to be the most negatively affected. Researching climatic tolerance in social insects is challenging because adaptations exist at both individual and societal levels. Division of labor research helps to bridge the gap between our understanding of these adaptations at different scales, which is important because social insects comprise a tremendous portion of global animal biomass, biodiversity, and ecosystem services. Considering how individual physiologies construct group-level adaptations can improve climate change impact assessments for social species. Tetragonisca angustula is a neotropical stingless bee species that exhibits high worker subcaste specialization with a morphologically distinct soldier caste. Methods: We used this species to investigate 1) whether age- and size-differentiated subcastes differ in thermal tolerance, 2) which worker subcaste operates closest to their thermal limits, and 3) the extent to which this species selects active foraging times to offset thermal stress. We measured the thermal tolerance (CTmax and CTmin) of small-bodied foragers and two soldier subcastes (hovering guards and standing guards) in T. angustula. Results and discussion: Despite body size differences between foragers and guards, no differences in the upper or lower thermal limits were observed. However, the average thermal tolerance breadth of foragers was significantly larger than that of guards, and foraging sites were more thermally variable than nest sites, supporting the Climatic Variability Hypothesis at a microclimate scale and in the context of division of labor. Warming tolerance was significantly lower among small-bodied foragers compared to hovering and standing guards. The magnitude of warming tolerances indicated low risk of imminent climate change impacts in this environment but suggests that increasing temperatures and heatwave prevalence may cause foragers to meet their upper thermal limits before other subcastes. Foraging occurred at a narrower range of temperatures than would challenge critical temperatures, with higher morning activity. Directionally increasing temperatures will likely confine these preferred foraging temperatures to a narrower time window. Further study is needed to elucidate how foragers may shift times of activity in response to anthropogenic warming, but changing climates may impact plant pollination rates in natural and agricultural systems. |
| 英文关键词 | climate change; Jata & iacute;; Meliponini; Microclimates; social insects; Tetragonisca angustula; thermal tolerance; warming tolerance |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Ecology |
| WOS记录号 | WOS:001228951200001 |
| 来源期刊 | FRONTIERS IN ECOLOGY AND EVOLUTION
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/310015 |
| 作者单位 | University of Southern Mississippi |
| 推荐引用方式 GB/T 7714 | . Stingless bee foragers experience more thermally stressful microclimates and have wider thermal tolerance breadths than other worker subcastes[J],2024,12. |
| APA | (2024).Stingless bee foragers experience more thermally stressful microclimates and have wider thermal tolerance breadths than other worker subcastes.FRONTIERS IN ECOLOGY AND EVOLUTION,12. |
| MLA | "Stingless bee foragers experience more thermally stressful microclimates and have wider thermal tolerance breadths than other worker subcastes".FRONTIERS IN ECOLOGY AND EVOLUTION 12(2024). |
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