Physiological implications of pair-bond status in greylag geese
Physiological implications of pair-bond status in greylag geese
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DOI：
10.1098/rsbl.2011.0917
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发表时间：
2012-06
期刊：
影响因子：
3.3
通讯作者：
C. Wascher;B. Weiß;W. Arnold;K. Kotrschal
中科院分区：
文献类型：
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作者：
C. Wascher;B. Weiß;W. Arnold;K. Kotrschal
在群居脊椎动物中，可靠的社会盟友在应对压力源方面起着决定性作用。例如，已知社会盟友的支持会抑制糖皮质激素的反应。然而，在非人类动物中，社会嵌入如何影响交感神经-肾上腺素能轴（如心率（HR）所示）仍然是未知的。本文研究了25只在自然社会环境中自由放养的灰雁（Anser anser）的心率（HR）、配对联结状态和与配对距离之间的关系。在三个人中，我们调查了伴侣丧失后的HR反应。总体而言，我们发现了一个上下文和性别依赖的差异，配对和未配对的个人之间的HR，配对的男性具有较低的HR在激动的遭遇，和未配对的女性具有较低的HR在休息。此外，在配对的女性HR增加与合作伙伴的距离。我们的数据表明，人力资源是调制的对债券的地位在灰雁的背景和性别依赖的方式，这可能是社会脊椎动物的代表。尽管样本量小，本研究表明，适当的社会嵌入可以优化个人的生理投资在社会领域。这减少了个人的能量消耗，可能有利于健康和生殖成功。
In group-living vertebrates, reliable social allies play a decisive role in dealing with stressors. For example, support by social allies is known to dampen glucocorticoid responses. It remains unknown, however, how social embedding affects the sympatho-adrenergic axis as indicated by heart rate (HR) in non-human animals. We studied the relationships between HR, pair-bond status and distance from the pair-partner in twenty-five free-ranging greylag geese (Anser anser) in a natural social environment. In three individuals, we investigated HR responses following partner loss. Overall, we found a context- and sex-dependent difference in HR between paired and unpaired individuals, paired males having a lower HR during agonistic encounters, and unpaired females having a lower HR during resting. Also, in paired females HR increased with increasing distance from the partner. Our data suggest that HR is modulated by pair-bond status in greylag geese in a context- and sex-dependent manner, which may be representative for social vertebrates in general. Despite the low sample size, the present study indicates that proper social embedding may optimize an individual's physiological investment in the social domain. This reduces individual energy expenditure and may benefit health and reproductive success.