Testosterone implants alter the frequency range of zebra finch songs
Testosterone implants alter the frequency range of zebra finch songs
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DOI：
10.1016/j.yhbeh.2004.11.018
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发表时间：
2005-04-01
影响因子：
3.5
通讯作者：
Rossman, I
中科院分区：
文献类型：
--
作者：
Cynx, J;Bean, NJ;Rossman, I
为了研究睾酮的变化是否会改变斑胸草雀鸣叫的频率范围，我们将雄性斑胸草雀分为两组，一组接受睾酮植入，另一组接受空硅胶胶囊植入。然后，我们在手术后52周录制了歌曲，并测量了任意选择的两组鸟类歌曲中谐波堆叠的基本频率的频率变化。我们发现，5周后，睾酮治疗的鸟的歌声在统计学上显著下降。对照组的基本频率未见变化。在睾酮植入的明显效果结束后，频率的变化仍然存在。这些数据表明，高水平的睾丸激素会降低斑胸草雀歌曲中元素的频率。(c) 2004 Elsevier Inc.版权所有。
To investigate whether changes in testosterone alter the frequency range in which a zebra finch produces song, we assigned male zebra finches to two groups, one of which received testosterone implants and the other empty silastic capsule implants. We then recorded songs up to 52 weeks after the surgery and measured frequency changes in the fundamental frequencies of arbitrarily chosen harmonic stacks in the songs of birds in either group. We found statistically significant decreases after 5 weeks in the songs of the testosterone-treated birds. No changes were found in the fundamental frequencies of the control group. The frequency change remained after the apparent effects of the testosterone implants ended. These data show that high levels of testosterone can lower the frequencies of elements in zebra finch songs. (c) 2004 Elsevier Inc. All rights reserved.