SONG DEVELOPMENT IN THE WHITE-CROWNED SPARROW - SOCIAL-FACTORS AND SEX-DIFFERENCES
SONG DEVELOPMENT IN THE WHITE-CROWNED SPARROW - SOCIAL-FACTORS AND SEX-DIFFERENCES
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DOI：
10.1016/s0003-3472(86)80207-x
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发表时间：
1986-10-01
期刊：
影响因子：
2.5
通讯作者：
PETRINOVICH, L
中科院分区：
文献类型：
--
作者：
BAPTISTA, LF;PETRINOVICH, L
早期研究结果表明，人工饲养的白冠麻雀接触录音歌曲后，会在 10 至 50 天之间学会同一种歌曲，但不会在该年龄之前或之后学会。这些研究还表明，同种异体歌曲并不是习得的。我们描述了 41 只雄性和 22 只雌性人工饲养的白冠麻雀的鸣叫发育过程。 30 名男性和 15 名女性接触了现场唱歌的成年男性。研究发现，尽管辅导是在 50 天大时开始的，但大多数男学生还是学会了现场导师的歌曲，而在这个年龄，幼崽会从出生地分散到繁殖地。男学生学习同种歌曲就像学习同种歌曲一样容易，即使实验室中存在同种歌曲。只有三名雌性复制了同种或异体现场导师歌曲的任何部分。六只 50 天大的雄性和七只雌性被暴露在录音歌曲中，但没有一个学会了导师歌曲。这些结果表明，歌曲学习存在性别差异，并且如果使用现场导师，男性歌曲学习的敏感期会延伸到 50 天以上。我们的结论是，社交互动可以凌驾于任何防止不当刺激影响歌曲学习中心的听觉门控机制。
Results of earlier studies indicated that hand-raised white-crowned sparrows exposed to tape-recorded songs learned conspecific song between ages 10-50 days, but not before or after that age. These studies also indicated that allospecific songs were not learned. We describe song development in 41 male and 22 female hand-raised white-crowned sparrows. Thirty males and 15 females were exposed to a live adult singing male. It was found that most male students learned the song of their live tutor even though tutoring was begun at 50 days of age, an age by which young would have dispersed from the natal to the breeding area. Male students learned allospecific song as easily as they did conspecific song, even though conspecific song was present in the laboratory. Only three females copied any part of the song of either conspecific or allospecific live tutors. Six 50-day-old males and seven females were exposed to tape-recorded song and none learned the tutor song. These results indicate that there are sex differences in song learning, and that, if live tutors are used, the sensitive phase for male song learning extends beyond 50 days of age. We conclude that social interaction can override any auditory gating mechanism that prevents inappropriate stimuli from influencing song learning centres.