Flexibility in thermal requirements: a comparative analysis of the wide-spread lizard genus Sceloporus.

IF 3.5 1区 生物学 Q1 ZOOLOGY Integrative zoology Pub Date : 2024-06-16 DOI:10.1111/1749-4877.12860
Melissa Plasman, Alejandro Gonzalez-Voyer, Amando Bautista, Aníbal H Díaz DE LA Vega-Pérez
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Abstract

Adaptation or acclimation of thermal requirements to environmental conditions can reduce thermoregulation costs and increase fitness, especially in ectotherms, which rely heavily on environmental temperatures for thermoregulation. Insight into how thermal niches have shaped thermal requirements across evolutionary history may help predict the survival of species during climate change. The lizard genus Sceloporus has a widespread distribution and inhabits an ample variety of habitats. We evaluated the effects of geographical gradients (i.e. elevation and latitude) and local environmental temperatures on thermal requirements (i.e. preferred body temperature, active body temperature in the field, and critical thermal limits) of Sceloporus species using published and field-collected data and performing phylogenetic comparative analyses. To contrast macro- and micro-evolutional patterns, we also performed intra-specific analyses when sufficient reports existed for a species. We found that preferred body temperature increased with elevation, whereas body temperature in the field decreased with elevation and increased with local environmental temperatures. Critical thermal limits were not related to the geographic gradient or environmental temperatures. The apparent lack of relation of thermal requirements to geographic gradient may increase vulnerability to extinction due to climate change. However, local and temporal variations in thermal landscape determine thermoregulation opportunities and may not be well represented by geographic gradient and mean environmental temperatures. Results showed that Sceloporus lizards are excellent thermoregulators, have wide thermal tolerance ranges, and the preferred temperature was labile. Our results suggest that Sceloporus lizards can adjust to different thermal landscapes, highlighting opportunities for continuous survival in changing thermal environments.

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热需求的灵活性:对广布蜥蜴属 Sceloporus 的比较分析。
对环境条件的热需求的适应或驯化可以降低体温调节成本并提高适应能力,尤其是对于外温动物来说,因为它们在很大程度上依赖环境温度来进行体温调节。洞察整个进化史中热生态位是如何形成热需求的,可能有助于预测物种在气候变化中的生存情况。黄喉蜥属分布广泛,栖息于多种栖息地。我们利用已发表的数据和野外收集的数据,评估了地理梯度(即海拔和纬度)和当地环境温度对黄喉蜥物种热需求(即喜好体温、野外活动体温和临界温度极限)的影响,并进行了系统发生学比较分析。为了对比宏观和微观的进化模式,我们还在一个物种有足够报告的情况下进行了种内分析。我们发现,喜好体温随海拔升高而升高,而野外体温随海拔升高而降低,并随当地环境温度升高而升高。临界温度极限与地理梯度或环境温度无关。热要求与地理梯度明显无关,这可能会增加因气候变化而灭绝的可能性。然而,热景观的局部和时间变化决定了体温调节的机会,而地理梯度和平均环境温度可能并不能很好地体现这一点。结果表明,黄颡蜥是优秀的体温调节者,具有宽广的热耐受范围,且偏好温度易变。我们的研究结果表明,黄喉蜥能够适应不同的热景观,这凸显了它们在不断变化的热环境中持续生存的机会。
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来源期刊
CiteScore
6.40
自引率
12.10%
发文量
81
审稿时长
>12 weeks
期刊介绍: The official journal of the International Society of Zoological Sciences focuses on zoology as an integrative discipline encompassing all aspects of animal life. It presents a broader perspective of many levels of zoological inquiry, both spatial and temporal, and encourages cooperation between zoology and other disciplines including, but not limited to, physics, computer science, social science, ethics, teaching, paleontology, molecular biology, physiology, behavior, ecology and the built environment. It also looks at the animal-human interaction through exploring animal-plant interactions, microbe/pathogen effects and global changes on the environment and human society. Integrative topics of greatest interest to INZ include: (1) Animals & climate change (2) Animals & pollution (3) Animals & infectious diseases (4) Animals & biological invasions (5) Animal-plant interactions (6) Zoogeography & paleontology (7) Neurons, genes & behavior (8) Molecular ecology & evolution (9) Physiological adaptations
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