Robust behavioral effects of song playback in the absence of testosterone or corticosterone release.
Robust behavioral effects of song playback in the absence of testosterone or corticosterone release.
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DOI：
10.1016/j.yhbeh.2012.07.009
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发表时间：
2012-09
影响因子：
3.5
通讯作者：
Ketterson, Ellen D.
中科院分区：
文献类型：
--
作者：
Rosvall, Kimberly A.;Reichard, Dustin G.;Ferguson, Stephen M.;Whittaker, Danielle J.;Ketterson, Ellen D.
关键词：
一些鸣禽物种会提高睾丸激素水平，以应对领土入侵，而其他物种则不会。由于研究方法的差异，对荷尔蒙对社会挑战的反应的种间差异的普遍解释一直受到阻碍。我们的问题是，仅仅是歌曲回放是否足以使黑眼睛的Junco(Junco Hyemalis)体内的睾丸素或皮质酮水平上升，这种物种此前曾在模拟的领土入侵中表现出显著的睾丸素升高，当时伴随着歌声的是一只活的诱饵。我们研究了繁殖季节长度不同的两个种群(6-8vs14-16周)，并进行了高幅度、远距离歌唱的回放。在一个种群中，我们还播放了低幅度、短距离的歌声，这是丛林鸟和许多鸣禽攻击性的极强诱导者。我们观察到了对这两种类型歌曲的强烈攻击性反应，但在两种人群中都没有检测到血浆睾酮或皮质酮的升高。我们还测量了处理回放后皮质酮的升高，发现完全可以提高皮质酮的水平，但歌曲类别(长距离或短距离)对皮质酮的升高没有影响。总而言之，我们的数据表明，男性可以在不改变睾酮或皮质酮的情况下对重播做出攻击性反应，尽管在其他类型的社交互动中有能力改变这些激素。我们讨论了观察到的循环荷尔蒙和攻击性的脱钩与行为机制的关系，以及可能激活HPA和HPG轴的线索。
Some species of songbirds elevate testosterone in response to territorial intrusions while others do not. The search for a general explanation for this interspecific variation in hormonal response to social challenges has been impeded by methodological differences among studies. We asked whether song playback alone is sufficient to bring about elevation in testosterone or corticosterone in the dark-eyed junco (Junco hyemalis), a species that has previously demonstrated significant testosterone elevation in response to a simulated territorial intrusion when song was accompanied by a live decoy. We studied two populations of juncos that differ in length of breeding season (6–8 v. 14–16 weeks), and conducted playbacks of high amplitude, long-range song. In one population, we also played low amplitude, short-range song, a highly potent elicitor of aggression in juncos and many songbirds. We observed strong aggressive responses to both types of song, but no detectable elevation of plasma testosterone or corticosterone in either population. We also measured rise in corticosterone in response to handling post-playback, and found full capacity to elevate corticosterone but no effect of song class (long-range or short-range) on elevation. Collectively, our data suggest that males can mount an aggressive response to playback without a change in testosterone or corticosterone, despite the ability to alter these hormones during other types of social interactions. We discuss the observed decoupling of circulating hormones and aggression in relation to mechanisms of behavior and the cues that may activate the HPA and HPG axes.
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影响因子：
2.6
作者：
Ketterson, Ellen D.;Atwell, Jonathan W.;McGlothlin, Joel W.
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