Geographic variation in developmental plasticity among populations of the canyon treefrog in response to temperature and pond-drying

IF 1.9 3区 生物学 Q1 ZOOLOGY
C. I. Hernández-Herrera, H. A. Pérez-Mendoza, J. Fornoni
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引用次数: 0

Abstract

Understanding how species respond to environmental changes, particularly in the context of climate change, is crucial for biodiversity conservation. This study focuses on the plastic responses of canyon tree frog (Dryophytes arenicolor) larvae to variations in temperature and pond-drying, examining potential consequences of climate change. Frog larvae serve as an excellent model due to their high responsiveness to environmental cues during development. We analysed the impact of temperature and pond-drying on morphological and life-history traits, via a common garden experiment with individuals from three distinct populations with different ecological conditions. The experiments revealed significant differences in responses among populations, indicating geographic variation in plasticity. Pond-drying treatments led to reduced survival and reduction of morphological traits and growth, challenging the assumption that tadpoles have adaptive responses to drying conditions. In contrast, temperature treatments showed variable effects, with elevated temperatures generally favouring growth rates, reducing metamorphosis time, and having population-specific morphological shifts. We emphasize the importance of considering both morphological and life-history traits, as well as geographic variation, in assessing species' vulnerability to climate change. Furthermore, the integration of environmental standardized plasticity index (ESPI) and relative distances plasticity index (RDPI) in amphibian developmental plasticity will allow to quantify and compare plastic responses among populations and even other amphibian species in which these metrics are obtained in the future. Our results underscore the complexity of phenotypic plasticity, revealing genotype–environment interactions. These findings contribute valuable insights into the potential adaptability of D. arenicolor populations to ongoing climate changes, highlighting the need for comprehensive inter-population studies for a more nuanced understanding of species' responses to environmental change, and suggest that certain populations may be more vulnerable to extinction or better equipped to handle climate change based on their ability to adapt to environmental change.

Abstract Image

峡谷树蛙种群发育可塑性对温度和池塘干燥反应的地理差异
了解物种如何应对环境变化,尤其是气候变化,对于保护生物多样性至关重要。本研究侧重于峡谷树蛙(Dryophytes arenicolor)幼体对温度变化和池塘干燥的可塑性反应,探讨气候变化的潜在后果。青蛙幼体是一个极好的模型,因为它们在发育过程中对环境线索反应灵敏。我们通过对来自三个不同生态条件种群的个体进行共同园实验,分析了温度和池塘干燥对形态和生活史特征的影响。实验结果表明,不同种群的反应存在显著差异,这表明可塑性存在地域差异。池塘干燥处理导致蝌蚪存活率降低、形态特征和生长速度下降,这对蝌蚪对干燥条件具有适应性反应的假设提出了挑战。与此相反,温度处理显示出不同的影响,温度升高通常有利于蝌蚪的生长速度,缩短变态时间,并产生种群特有的形态变化。我们强调,在评估物种对气候变化的脆弱性时,必须同时考虑形态和生活史特征以及地理差异。此外,将环境标准化可塑性指数(ESPI)和相对距离可塑性指数(RDPI)整合到两栖动物发育可塑性研究中,将有助于量化和比较不同种群甚至其他两栖动物物种的可塑性反应。我们的研究结果强调了表型可塑性的复杂性,揭示了基因型与环境之间的相互作用。这些发现为了解D. arenicolor种群对持续气候变化的潜在适应能力提供了宝贵的见解,强调了进行种群间综合研究的必要性,以便更细致地了解物种对环境变化的反应,并表明某些种群可能更容易灭绝,或根据其适应环境变化的能力更好地应对气候变化。
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来源期刊
Journal of Zoology
Journal of Zoology 生物-动物学
CiteScore
3.80
自引率
0.00%
发文量
90
审稿时长
2.8 months
期刊介绍: The Journal of Zoology publishes high-quality research papers that are original and are of broad interest. The Editors seek studies that are hypothesis-driven and interdisciplinary in nature. Papers on animal behaviour, ecology, physiology, anatomy, developmental biology, evolution, systematics, genetics and genomics will be considered; research that explores the interface between these disciplines is strongly encouraged. Studies dealing with geographically and/or taxonomically restricted topics should test general hypotheses, describe novel findings or have broad implications. The Journal of Zoology aims to maintain an effective but fair peer-review process that recognises research quality as a combination of the relevance, approach and execution of a research study.
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