Datasets and R code for Bottini et al. (2022) Effects of methylmercury and food stress on migratory activity in song sparrows, Melospiza melodia

This folder contains all the datasets and R code needed to reproduce the analysis of manuscript from Bottini et al. 2022 “Effects of methylmercury and food stress on migratory activity in song sparrows, Melospiza melodia”, published in Hormones and Behavior journal.
Link to the article is provided below.
Article's Highlights:
• Exposure to contaminants and/or stressors can hinder songbirds' migration.
• Carry-over effects of MeHg exposure and food stress on song sparrows were assessed.
• Nocturnal activity increased in MeHg-exposed birds and varied with food stress.
• Treatments and time affected corticosterone and body mass, but not thyroxine.
• Fecal corticosterone was positively correlated with nocturnal activity.

本文件夹收纳了复现Bottini等（2022）发表于《激素与行为（Hormones and Behavior）》期刊的论文《甲基汞与食物胁迫对歌带鹀（Melospiza melodia）迁徙活动的影响》的分析过程所需的全部数据集与R代码。该论文的链接已在下方提供。
论文核心亮点：
• 污染物与胁迫因子暴露可阻碍鸣禽的迁徙活动。
• 本研究评估了甲基汞（MeHg）暴露与食物胁迫对歌带鹀的遗留效应。
• 甲基汞暴露个体的夜间活动水平显著升高，且随食物胁迫程度发生动态变化。
• 实验处理与时间节点会影响皮质酮（corticosterone）水平与体重，但对甲状腺素（thyroxine）水平无显著作用。
• 粪便皮质酮水平与夜间活动呈显著正相关。