Behavioral and physiological responses of wild-caught European starlings (Sturnus vulgaris) to a minor, rapid change in ambient temperature
Behavioral and physiological responses of wild-caught European starlings (Sturnus vulgaris) to a minor, rapid change in ambient temperature
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DOI：
10.1016/j.cbpa.2011.06.011
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发表时间：
2011-10-01
影响因子：
2.3
通讯作者：
Romero, L. Michael
中科院分区：
文献类型：
--
作者：
de Bruijn, Robert;Romero, L. Michael
自由放养的动物不断适应环境的变化。以心率和糖皮质激素增加为代表的应激反应是调节这些变化的重要生理反应。本研究探讨了心率，皮质酮和行为反应的欧洲椋鸟（Sturnus vulgaris），以快速30分钟的温度下降，使用空调机组。10只野生捕获的鸟被分成两对，进行四次不同的试验。三项试验为对照：不受干扰的鸟类;使鸟类仅暴露于空调单元的噪声;以及使鸟类暴露于20摄氏度的气流。在实验中，鸟暴露在12摄氏度的空气中，导致鸟笼内的环境温度迅速但适度地下降3摄氏度。在试验前和试验期间记录心率和行为，同时在每次试验前后收集血液样本用于皮质酮测量。冷却，但没有控制条件，诱导心率和皮质酮的增加。此外，冷却导致鲈鱼跳跃和羽毛起皱的增加。我们的结论是，温度的微小变化可以引起欧洲椋鸟的应激反应，这表明，这可能是一个重要的机制，使动物科普轻微的快速环境变化。(C)2011 Elsevier Inc. All rights reserved.
Free-ranging animals continuously adjust to changes in their environment. The stress response, typified by increases in heart rate and glucocorticoids, is an important physiological response regulating these changes. This study investigated heart rate, corticosterone and behavioral responses of European starlings (Sturnus vulgaris) to a rapid 30 min decrease in temperature using an air-conditioning unit. Ten wild-caught birds were divided into pairs and exposed to four different trials. Three trials were controls: undisturbed birds; exposing birds to only the noise of the air-conditioning unit; and exposing the birds to 20 degrees C airflow. For the experimental trial birds were exposed to 12 degrees C air, leading to a rapid but modest 3 degrees C drop in ambient temperature inside the birdcages. Heart rate and behavior were recorded before and during trials, while blood samples were collected before and after each trial for corticosterone measurements. Cooling, but none of the control conditions, induced an increase in heart rate and corticosterone. Additionally, cooling led to an increase in perch hopping and feather ruffling. We conclude that minor changes in temperature can elicit a stress response in European starlings, which suggests that this may be an important mechanism by which animals cope with minor rapid environmental changes. (C) 2011 Elsevier Inc. All rights reserved.