Time course of changes in Gambel's white-crowned sparrow song behavior following transitions in breeding condition.
Time course of changes in Gambel's white-crowned sparrow song behavior following transitions in breeding condition.
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DOI：
10.1016/j.yhbeh.2008.10.006
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发表时间：
2009-01
影响因子：
3.5
通讯作者：
Brenowitz EA
中科院分区：
文献类型：
--
作者：
Meitzen J;Thompson CK;Choi H;Perkel DJ;Brenowitz EA
在动物类群中，行为及其潜在神经底物的季节性变化是常见的。这些变化通常是由类固醇性激素引发的。季节性繁殖的鸣禽的鸣叫就是这种现象的一个很好的例子。在这些物种中，由睾酮及其代谢物介导的戏剧性季节变化发生在成年歌唱行为和控制歌唱的神经回路中。虽然歌曲率可以根据季节性的繁殖线索迅速变化，但歌曲的其他方面变化的速度是未知的，特别是歌曲音素和句法的刻板印象。在这项研究中，我们确定了歌唱速率、音素和句法是否以及以多快的速度对繁殖和非繁殖的生理线索做出反应。我们用甘贝尔的白冠麻雀(Zonotrichia Leucophrys Gambeli)问了这些问题，这是一种封闭式学习者，在控制歌唱行为的神经回路中有很好的特征变化。我们将10只光敏性麻雀暴露在长日光周期下，并在它们的皮下植入睾丸素颗粒(第0天)以模拟繁殖条件。我们连续录制歌曲，发现歌唱频率迅速增加，在第6天左右达到最大值。歌曲音素的刻板印象变化较慢，到第10天或更晚达到最大值。歌曲句法在第6天后变化最小，这是被检查的最早时间点。21天后，我们将5只鸟从繁殖状态过渡到非繁殖状态。歌曲率急剧下降。这些结果表明，虽然歌唱速率变化很快，但歌曲音韵的变化却更慢，通常跟随或平行于先前研究的神经底物的变化。
Seasonal changes in behavior and its underlying neural substrate are common across animal taxa. These changes are often triggered by steroid sex hormones. Song in seasonally breeding songbirds provides an excellent example of this phenomenon. In these species, dramatic seasonal changes mediated by testosterone and its metabolites occur in adult song behavior and in the neural circuitry controlling song. While song rate can quickly change in response to seasonal breeding cues, it is unknown how quickly other aspects of song change, particularly the stereotypy of song phonology and syntax. In this study we determined whether and how quickly song rate, phonology, and syntax change in response to breeding and non-breeding physiological cues. We asked these questions using Gambel’s white-crowned sparrows (Zonotrichia leucophrys gambelii), a closed-ended learner with well-characterized changes in the neural circuitry controlling song behavior. We exposed ten photosensitive sparrows to long-day photoperiod and implanted them with subcutaneous testosterone pellets (day 0) to simulate breeding conditions. We continuously recorded song and found that song rate increased quickly, reaching maximum around day 6. The stereotypy of song phonology changed more slowly, reaching maximum by day 10 or later. Song syntax changed minimally after day 6, the earliest time point examined. After 21 days, we transitioned five birds from breeding to non-breeding condition. Song rate declined precipitously. These results suggest that while song rate changes quickly, song phonology changes more slowly, generally following or in parallel with previously investigated changes in the neural substrate.
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影响因子：
3.1
作者：
AUSTEN, MJW;HANDFORD, PT
通讯作者：
HANDFORD, PT
DOI：
10.2307/4512046
发表时间：
1974-01-01
期刊：
BIRD-BANDING
影响因子：
--
作者：
DEWOLFE, BB;KASKA, DD;PEYTON, LJ
通讯作者：
PEYTON, LJ
DOI：
10.1007/s00359-002-0359-x
发表时间：
2002-12-01
影响因子：
2.1
作者：
Lucas, JR;Freeberg, TM;Long, GR
通讯作者：
Long, GR
影响因子：
3.5
作者：
Cynx, J;Bean, NJ;Rossman, I
通讯作者：
Rossman, I
DOI：
10.1016/s0163-1047(86)90485-1
发表时间：
1986-11-01
期刊：
BEHAVIORAL AND NEURAL BIOLOGY
影响因子：
--
作者：
NOTTEBOHM, F;NOTTEBOHM, ME;CRANE, L
通讯作者：
CRANE, L