CORRELATIONS BETWEEN SONG ACQUISITION, SONG PRODUCTION, AND PLASMA-LEVELS OF TESTOSTERONE AND ESTRADIOL IN SPARROWS
CORRELATIONS BETWEEN SONG ACQUISITION, SONG PRODUCTION, AND PLASMA-LEVELS OF TESTOSTERONE AND ESTRADIOL IN SPARROWS
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DOI：
10.1002/neu.480180605
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发表时间：
1987-11-01
期刊：
影响因子：
--
通讯作者：
WINGFIELD, J
中科院分区：
文献类型：
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作者：
MARLER, P;PETERS, S;WINGFIELD, J
雄鸟的鸣叫是一种两性异形的行为，其特征是习得的方言。在一项关于血浆中类固醇水平与学习的联合研究中，雌二醇和睾酮水平的变化与歌曲获得敏感期的时间和歌曲发展的连续阶段相关。雄性沼泽麻雀的训练与不断变化的一系列现场歌唱导师从26天到1岁。宋收购集中在26日龄和47日龄（57%）。到85日龄时，71%的获得完成，有些甚至迟至300日龄。有两个主要时期睾丸激素水平升高。第一个阶段是30-80天，涵盖了歌曲习得的大部分时间。第二，从260天到至少360天的年龄正好与歌曲的发展。从18日龄到170日龄，情绪水平升高，几乎涵盖了所有的歌曲获得时期。一个显着的雌二醇峰值之间的40和50天，正好在睾酮水平的低谷和歌曲收购的中断。第二阶段睾丸激素升高与歌曲运动发育之间的强相关性表明了一种因果关系，睾丸激素水平在发育中期达到峰值，在成熟的歌曲产生过程中下降。在研究开始时，雌激素水平升高，并在30至165天的早期亚歌产生期间保持如此。然后它们下降到基线，在250-326天的亚歌和塑料歌生产恢复期间保持在那里。雌二醇和睾酮都可能影响歌曲的获得。
Male birdsong is a sexually dimorphic behavior characterized by learned dialects. In a combined study of learning in relation to steroid levels in the plasma, changes in estradiol and testosterone levels were correlated with the timing of the sensitive period for song acquisition and with successive stagesd in song development. Male swamp sparrows were trained with a changing series of live singing tutors from 26 days to 1 year of age. Song acquisition was concentrated between 26 and 47 days of age (57%). By 85 days of age 71% of acquisition was completed; some occurred as late as 300 days. There were two major periods when testosterone levels were elevated. The first, from 30-80 days, encompassed most of the period of song acquisition. The second, from 260 to at least 360 days of age coincided with song development. Estradiol levels were elevated from 18 to 170 days of age, encompassing almost all of the period of song acquisition. A marked estradiol peak between 40 and 50 days coincided with a trough in testosterone levels and a hiatus in song acquisition. The strong correlation between the second period of elevated testosterone and song motor development suggests a causal connection, with levels peaking in mid-development and declining during mature song production. Estradiol levels were elevated at the start of the study and remained so during early subsong production, from 30 to 165 days. They then fell to baseline, remaining there throughout the resumption of subsong and plastic song production at 250-326 days. Both estradiol and testosterone are candidates for possibly affecting song acquisition.