Impact of food availability on the thermal performance curves of male European green lizards (Lacerta viridis).

IF 2.3 2区 环境科学与生态学 Q2 ECOLOGY
Boglárka Mészáros, Lilla Jordán, Orsolya Molnár, János Török
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引用次数: 0

Abstract

In a changing environment, characterized by human-induced rapid environmental change (HIREC), understanding the impacts of environmental stressors on reptile species is crucial. Preferred body temperatures (PBT) and thermal performance curves (TPCs) are comprehensive thermal physiology traits reflecting overall physiological performance and crucial for predicting species-specific responses to environmental changes. There is limited or conflicting information on how food availability affect the PBT and TPCs of lizard species, despite their significance in the context of the global decline in reptile species. The aim of this study was to experimentally investigate how food deprivation affects the PBT and TPCs of the European green lizards (Lacerta viridis). We exposed 30 adult male European green lizards to optimal and suboptimal food treatments. We assessed PBTs, and characterized the TPCs based on the thermal optimum (To), the maximum performance (Pmax) and performance breadth (B80) of the lizards. We found that food availability had a significant impact on preferred body temperature and locomotor performance. Lizards experiencing suboptimal conditions showed a preference for lower body temperatures, indicating an intention to minimize energy expenditure during fasting. Additionally, food-deprived lizards had wider B80 range, suggesting their thermal acclimatization to maintain effective performance across a broader temperature range. Our findings highlight the importance of food availability as a key environmental stressor influencing thermoregulation strategies. As habitat modifications and global warming continue, it is crucial to evaluate the impacts of these changes on species for the development of effective conservation strategies.

食物可得性对雄性欧洲绿蜥热性能曲线的影响
在以人为引起的快速环境变化(HIREC)为特征的环境变化中,了解环境应激源对爬行动物物种的影响至关重要。偏好体温(PBT)和热性能曲线(TPCs)是反映生物整体生理性能的综合热生理特征,对预测物种对环境变化的特异性反应具有重要意义。关于食物供应如何影响蜥蜴物种的PBT和tpc的信息有限或相互矛盾,尽管它们在全球爬行动物物种减少的背景下具有重要意义。本研究的目的是实验研究食物剥夺如何影响欧洲绿蜥(Lacerta viridis)的PBT和TPCs。我们将30只成年雄性欧洲绿蜥蜴暴露在最佳和次优食物处理中。基于热最适值(To)、最大性能值(Pmax)和性能宽度(B80)对tpc进行了评价,并对tpc进行了表征。我们发现食物供应对偏好体温和运动表现有显著影响。经历次优条件的蜥蜴表现出对较低体温的偏好,这表明它们打算在禁食期间尽量减少能量消耗。此外,缺乏食物的蜥蜴有更宽的B80范围,这表明它们的热适应性可以在更宽的温度范围内保持有效的表现。我们的研究结果强调了食物供应作为影响体温调节策略的关键环境压力源的重要性。随着生境变化和全球变暖的持续,评估这些变化对物种的影响对于制定有效的保护策略至关重要。
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来源期刊
Oecologia
Oecologia 环境科学-生态学
CiteScore
5.10
自引率
0.00%
发文量
192
审稿时长
5.3 months
期刊介绍: Oecologia publishes innovative ecological research of international interest. We seek reviews, advances in methodology, and original contributions, emphasizing the following areas: Population ecology, Plant-microbe-animal interactions, Ecosystem ecology, Community ecology, Global change ecology, Conservation ecology, Behavioral ecology and Physiological Ecology. In general, studies that are purely descriptive, mathematical, documentary, and/or natural history will not be considered.
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