E. van Bergen, G. Atencio, M. Saastamoinen, P. Beldade
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引用次数: 0
摘要
自然种群中的表型变异源于生物与其不断变化的环境之间复杂的相互作用。环境既影响表型频率(在适应过程中),也影响生物表型(通过表型可塑性)。尤其是发育可塑性,是指生物的表型取决于发育过程中的环境条件的现象。它可以使表型与生态条件相匹配,帮助生物应对环境的异质性,包括季节交替之间的差异。发育可塑性的实验研究通常侧重于单个环境线索的影响,而没有明确考虑遗传变异。与此相反,自然环境是复杂的,由多种变量组成,其综合效应尚不清楚,而且可能因基因型而异。我们研究了多因素环境对Bicyclus anynana蝴蝶季节性可塑性眼斑发育的影响。眼斑的大小取决于发育温度,并参与避开捕食者的季节性策略。在自然界中,温度和食物供应都会发生季节性波动。然而,我们对眼斑大小的热可塑性如何随食物可获得性和不同基因型而变化的了解仍然有限。为了解决这个问题,我们研究了发育过程中温度(T;两个水平:20°C 和 27°C)和食物供应(N;两个水平:控制和限制)的综合影响。我们研究了它们对多基因型(G;28 个家系)成年雄性和雌性的翅膀和眼斑大小的影响。我们发现了热和营养可塑性以及温度-营养相互作用(显著的 T × N)对雌雄个体眼斑大小影响的证据。食物限制导致眼窝相对较小,并削弱了温度的影响。此外,我们还发现不同科的热可塑性存在差异(G × T效应显著),但营养可塑性(G × N效应不显著)以及温度和食物限制的综合效应(G × T × N效应不显著)不存在差异。我们的结果揭示了热可塑性的环境依赖性,不同基因型和不同营养环境下的热反应规范斜率各不相同。我们将根据色素沉着的生态意义以及在研究气候变化对生物影响时考虑热可塑性的价值来讨论这些结果。在期刊博客上免费阅读本文的通俗摘要。
期刊介绍:
Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.