Individual plasticity in response to rising sea temperatures contributes to an advancement in green turtle nesting phenology.

IF 3.8 1区 生物学 Q1 BIOLOGY
Mollie L Rickwood, Eve Tucker, Damla Beton, Sophie Davey, Brendan J Godley, Robin T E Snape, Erik Postma, Annette C Broderick
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Abstract

Phenological changes (i.e. shifts in the timing of biological events) are among the most frequently reported population-level responses to climate change and are often assumed to be adaptive and increase population viability. These may be driven by both individual-level phenotypic plasticity and population-level evolutionary and demographic changes. However, few studies have explored how individual-level versus population-level processes drive phenological trends. Using a 31-year dataset of over 600 individually marked nesting green turtles (Chelonia mydas), we quantify the population- and individual-level temporal trend in their first nest date. Of the latter, approximately 30% is attributable to individual phenological plasticity in response to sea surface temperature, with females advancing their nesting by 6.47 days for every degree (Celsius) increase. The remaining change is almost entirely explained by individual- and population-level changes in size and breeding experience (correlates of age), as well as the number of clutches laid per season. This is the first study of individual-level phenological change in a marine ectotherm, furthering our understanding of how this and similar species may respond to rising temperatures.

个体可塑性对海水温度上升的响应有助于绿海龟筑巢物候学的进步。
物候变化(即生物事件发生时间的变化)是最常报道的种群水平对气候变化的反应之一,通常被认为是适应性的,可以提高种群的生存能力。这些可能是由个体水平的表型可塑性和种群水平的进化和人口变化驱动的。然而,很少有研究探讨了个体水平与群体水平的过程如何驱动物候趋势。使用超过600只单独标记筑巢绿海龟(Chelonia mydas)的31年数据集,我们量化了它们第一次筑巢日期的种群和个体水平的时间趋势。在后者中,约30%归因于个体对海面温度的物候可塑性,每升高1摄氏度,雌性会提前6.47天筑巢。其余的变化几乎完全可以用个体和种群在体型和繁殖经验(与年龄相关)以及每个季节产卵数量上的变化来解释。这是对海洋变温动物个体物候变化的首次研究,进一步加深了我们对这种物种和类似物种如何应对不断上升的温度的理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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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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