多态蜥蜴色素和结构体色的热稳定性

IF 2.9 2区 生物学 Q2 BIOLOGY
Cristina Romero-Diaz , Enrique Font , Guillem Pérez i de Lanuza
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引用次数: 0

摘要

动物的颜色在交流、伪装、警告、模仿和体温调节中起着重要作用,并对适应和多样化具有重要意义。因此,颜色特征的表型可塑性可以影响社会、繁殖、反捕食者或体温调节行为,确定颜色变化的原因和后果有助于我们理解进化。与季节或个体发生的颜色变化相比,响应环境条件精细变化的生理颜色变化受到的关注较少。温度驱动的颜色快速变化对生态生理学有着深远的影响,特别是在变温动物中。本研究利用一种广泛存在的颜色多态性动物——斑足虫(Podarcis muralis),研究了温度对不同身体区域的颜色特性和基于色素和结构的颜色感知的影响。我们将不同颜色的雄性和雌性成年蜥蜴置于低温(25°C)和高温(≥34°C)两种不同的温度条件下,并使用分光光度计量化背部、腹部、喉咙和紫外线(UV)蓝色腹侧斑块的颜色变化。然后,我们应用视觉建模来评估从同一和两个视觉捕食者的角度的颜色变化。我们表明,尽管光谱反射率指标存在微小差异,但温度对接收器感知色块的方式没有显着影响。此外,温度不会影响现有的性别和形态的颜色特性差异,这表明我们观察到的微小变化在这种情况下几乎没有功能/适应性后果。与其他蜥蜴类群(鬣蜥和壁虎)的研究结果相反,我们的研究结果表明,温度诱导的快速视觉颜色变化不太可能发生在这种蜥蜴物种中。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Thermal stability of pigment- and structurally based body coloration in a polymorphic lizard
Animal coloration plays a fundamental role in communication, camouflage, aposematism, mimicry and thermoregulation, and has strong implications for adaptation and diversification. Phenotypic plasticity of color traits can thus affect social, reproductive, antipredator, or thermoregulatory behavior and determining the causes and consequences of color change helps us understand evolution. In contrast to seasonal or ontogenetic color changes, physiological color change in response to fine-scale changes in environmental conditions has received less attention. Temperature-driven, rapid changes in coloration can have profound implications for ecophysiology, particularly in ectotherms. Here, using a widespread color polymorphic lacertid, Podarcis muralis, we study the impact of temperature on the chromatic properties and perception of pigment- and structurally based coloration of different body regions. We subjected male and female adult lizards from different color morphs to two different temperature regimes: cold (25 °C) and hot (≥34 °C) temperature, and quantified color change in the dorsum, belly, throat and ultraviolet (UV)-blue ventrolateral patches using a spectrophotometer. We then applied visual modeling to assess color variation from the perspective of a conspecific and two visual predators. We show that despite minor differences in spectral reflectance metrics, temperature had no significant effect on how color patches are perceived by receivers. Moreover, temperature did not affect existing sex and morph differences in color properties, suggesting that the minor changes we observed have little functional/adaptive consequences in this context. Contrary to results reported in other lizard taxa (iguanians and geckos), our findings suggest that temperature-induced rapid visual color change is unlikely in this lacertid species.
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来源期刊
Journal of thermal biology
Journal of thermal biology 生物-动物学
CiteScore
5.30
自引率
7.40%
发文量
196
审稿时长
14.5 weeks
期刊介绍: The Journal of Thermal Biology publishes articles that advance our knowledge on the ways and mechanisms through which temperature affects man and animals. This includes studies of their responses to these effects and on the ecological consequences. Directly relevant to this theme are: • The mechanisms of thermal limitation, heat and cold injury, and the resistance of organisms to extremes of temperature • The mechanisms involved in acclimation, acclimatization and evolutionary adaptation to temperature • Mechanisms underlying the patterns of hibernation, torpor, dormancy, aestivation and diapause • Effects of temperature on reproduction and development, growth, ageing and life-span • Studies on modelling heat transfer between organisms and their environment • The contributions of temperature to effects of climate change on animal species and man • Studies of conservation biology and physiology related to temperature • Behavioural and physiological regulation of body temperature including its pathophysiology and fever • Medical applications of hypo- and hyperthermia Article types: • Original articles • Review articles
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