Environment-dependent relationships between corticosterone and energy expenditure during reproduction: Insights from seabirds in the context of climate change

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY

Functional Ecology Pub Date : 2024-08-13 DOI:10.1111/1365-2435.14630

Andrea S. Grunst, Melissa L. Grunst, David Grémillet, Olivier Chastel, Marta Cruz-Flores, Sophie Gentès, Antoine Grissot, Dariusz Jakubas, Akiko Kato, Charline Parteneau, Katarzyna Wojczulanis-Jakubas, Jérôme Fort

引用次数: 0

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皮质酮与繁殖期间能量消耗之间的环境依赖关系：气候变化背景下海鸟的启示

关于荷尔蒙皮质酮（CORT）如何介导繁殖期间的能量消耗，人们提出了不同的假设。基线皮质酮（CORTb）的升高可能会支持每日能量消耗（DEE），促进繁殖努力，或降低低质量个体在面临静力超载时的代价高昂的行为。我们研究了 CORTb、时间活动预算（TABs）、DEE 和潜水行为之间的关系，这些关系跨越了两年时间和小赤麻鸭（Alle alle）的群落，小赤麻鸭是一种北极海鸟，面对气候变化，提高 DEE 可能有助于其繁殖。我们还探讨了汞（Hg）污染是否会通过影响下丘脑-垂体-肾上腺（HPA）轴和CORT的产生来抑制DEE。此外，我们还对繁殖海鸟物种进行了系统发育控制分析，以更广泛地了解 CORT 与 DEE 的关系。在东格陵兰岛寒冷的一年中，CORTb与小赤麻鸭的活动、DEE和潜水持续时间呈正相关，当时小赤麻鸭种群中的CORTb升高，但在温暖的一年中或在斯瓦尔巴群岛，CORTb与小赤麻鸭的活动、DEE和潜水持续时间不呈正相关。CORTb不能预测雏鸟的供给量，汞也不能抑制CORTb。在所有繁殖海鸟物种中，CORTb与DEE不相关。相反，与预测相反，在低纬度繁殖的物种CORTb更高。种内分析结果表明，CORTb、行为和DEE之间的关系取决于环境，这对理解CORTb在适应气候变化中的作用具有重要意义。种间分析表明，在繁殖过程中，CORTb和DEE之间不存在相关选择，而且引起CORTb变化的DEE阈值可能因物种而异。在期刊博客上免费阅读本文的通俗摘要。

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来源期刊

Functional Ecology 环境科学-生态学

CiteScore

9.00

自引率

1.90%

发文量

243

审稿时长

4 months

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.