表型可塑性和扩散可塑性并不是生物应对热变化的替代策略。

IF 3.8 1区 生物学 Q1 BIOLOGY
Mélanie Thierry, Léonard Dupont, Delphine Legrand, Staffan Jacob
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引用次数: 0

摘要

为了缓冲局部环境变化的影响,生物可能会改变其表型特征(即表型可塑性)或向其他潜在栖息地分散(即扩散可塑性)。尽管对“局部表型可塑性”或“扩散可塑性”进行了广泛的独立研究,但对它们潜在的共变异和相互作用知之甚少。这些策略通常被视为替代策略。然而,这一期望受到了理论工作的挑战,理论工作表明它们可能在某些环境背景下共同进化。本文通过实验量化了12株纤毛虫嗜热四膜虫(Tetrahymena thermoophila)的形态、运动和传播可塑性对温度变化的响应。我们发现表型可塑性和扩散可塑性并不是可替代的策略,有一半的菌株在响应热变化时同时表达可塑性的所有维度。在形态可塑性和运动可塑性方面,居居者和分散者存在显著差异。有趣的是,我们发现这些不同的可塑性维度之间没有共变,这表明它们可能是独立进化的,这就需要研究哪种环境背景有利于每种可塑性维度的进化。表型可塑性和扩散可塑性并不是可替代的策略,它们可能会影响彼此的表达,这一事实为它们的共同进化和相互作用的潜在后果开辟了有趣的视角。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phenotypic and dispersal plasticity are not alternative strategies for organisms to face thermal changes.

To buffer the effects of local environmental changes, organisms may modify their phenotypic traits (i.e. phenotypic plasticity) or disperse towards other potential habitats (i.e. dispersal plasticity). Despite extensive work studying either 'local phenotypic plasticity' or 'dispersal plasticity' independently, little is known about their potential covariation and interplay. These strategies are classically viewed as alternatives. However, this expectation has been challenged by theoretical work suggesting that they may instead evolve together under some environmental contexts. Here, we experimentally quantified morphological, movement and dispersal plasticity in response to thermal changes in 12 strains of the ciliate Tetrahymena thermophila. We showed that phenotypic and dispersal plasticity are not alternative strategies, with half of the strains expressing simultaneously all dimensions of plasticity in response to thermal changes. Furthermore, the extent of morphological and movement plasticity weakly but significantly differed between residents and dispersers. Interestingly, we found no covariation between these different plasticity dimensions, suggesting that they may evolve independently, which pleads for studying which environmental contexts favour the evolution of each. The fact that phenotypic and dispersal plasticity are not alternative strategies and may affect the expression of one another opens interesting perspectives about their joint evolution and the potential consequences of their interplay.

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来源期刊
CiteScore
7.90
自引率
4.30%
发文量
502
审稿时长
1 months
期刊介绍: Proceedings B is the Royal Society’s flagship biological research journal, accepting original articles and reviews of outstanding scientific importance and broad general interest. The main criteria for acceptance are that a study is novel, and has general significance to biologists. Articles published cover a wide range of areas within the biological sciences, many have relevance to organisms and the environments in which they live. The scope includes, but is not limited to, ecology, evolution, behavior, health and disease epidemiology, neuroscience and cognition, behavioral genetics, development, biomechanics, paleontology, comparative biology, molecular ecology and evolution, and global change biology.
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