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DOI	10.1002/ece3.10945
	Body mass, temperature, and pathogen intensity differentially affect critical thermal maxima and their population-level variation in a solitary bee
	Jones, Laura J.; Miller, Douglas A.; Schilder, Rudolf J.; Lopez-Uribe, Margarita M.
发表日期	2024
ISSN	2045-7758
起始页码	14
结束页码	2
卷号	14 期号:2
英文摘要	Climate change presents a major threat to species distribution and persistence. Understanding what abiotic or biotic factors influence the thermal tolerances of natural populations is critical to assessing their vulnerability under rapidly changing thermal regimes. This study evaluates how body mass, local climate, and pathogen intensity influence heat tolerance and its population-level variation (SD) among individuals of the solitary bee Xenoglossa pruinosa. We assess the sex-specific relationships between these factors and heat tolerance given the differences in size between sexes and the ground-nesting behavior of the females. We collected X. pruinosa individuals from 14 sites across Pennsylvania, USA, that varied in mean temperature, precipitation, and soil texture. We measured the critical thermal maxima (CTmax) of X. pruinosa individuals as our proxy for heat tolerance and used quantitative PCR to determine relative intensities of three parasite groups-trypanosomes, Spiroplasma apis (mollicute bacteria), and Vairimorpha apis (microsporidian). While there was no difference in CTmax between the sexes, we found that CTmax increased significantly with body mass and that this relationship was stronger for males than for females. Air temperature, precipitation, and soil texture did not predict mean CTmax for either sex. However, population-level variation in CTmax was strongly and negatively correlated with air temperature, which suggests that temperature is acting as an environmental filter. Of the parasites screened, only trypanosome intensity correlated with heat tolerance. Specifically, trypanosome intensity negatively correlated with the CTmax of female X. pruinosa but not males. Our results highlight the importance of considering size, sex, and infection status when evaluating thermal tolerance traits. Importantly, this study reveals the need to evaluate trends in the variation of heat tolerance within and between populations and consider implications of reduced variation in heat tolerance for the persistence of ectotherms in future climate conditions. This study evaluates how body mass, local climate, and pathogen intensity influence heat tolerance and its population-level variation among individuals of the solitary bee Xenoglossa pruinosa. We did not find evidence of microclimate predicting mean heat tolerance in X. pruinosa, but we found that the population-level standard deviation in heat tolerance (CTmax) decreased by 0.72 degrees C with every 1 degrees C increase in maximum temperature. In addition, trypanosome parasite intensity negatively correlated with the CTmax of females, but not males. This study reveals that temperature may act as an environmental filter, and exemplifies the need to evaluate trends in heat tolerance variation within and between populations.image
英文关键词	climate; critical thermal maxima; heat tolerance; parasite; sex
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Ecology ; Evolutionary Biology
WOS记录号	WOS:001162535900001
来源期刊	ECOLOGY AND EVOLUTION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293076
作者单位	Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of Texas System; University of Texas Austin
推荐引用方式 GB/T 7714	Jones, Laura J.,Miller, Douglas A.,Schilder, Rudolf J.,et al. Body mass, temperature, and pathogen intensity differentially affect critical thermal maxima and their population-level variation in a solitary bee[J],2024,14(2).
APA	Jones, Laura J.,Miller, Douglas A.,Schilder, Rudolf J.,&Lopez-Uribe, Margarita M..(2024).Body mass, temperature, and pathogen intensity differentially affect critical thermal maxima and their population-level variation in a solitary bee.ECOLOGY AND EVOLUTION,14(2).
MLA	Jones, Laura J.,et al."Body mass, temperature, and pathogen intensity differentially affect critical thermal maxima and their population-level variation in a solitary bee".ECOLOGY AND EVOLUTION 14.2(2024).