SEASONAL-CHANGES IN GONADAL HORMONE LEVELS OF ADULT MALE CANARIES AND THEIR RELATION TO SONG
SEASONAL-CHANGES IN GONADAL HORMONE LEVELS OF ADULT MALE CANARIES AND THEIR RELATION TO SONG
复制标题
DOI：
10.1016/s0163-1047(87)90327-x
复制
发表时间：
1987-03-01
期刊：
影响因子：
--
通讯作者：
WINGFIELD, JC
中科院分区：
文献类型：
--
作者：
NOTTEBOHM, F;NOTTEBOHM, ME;WINGFIELD, JC
在 1 年内，当这些鸟从 12 个月大到 24 个月大时，我们每月从 6 只成年雄性金丝雀身上采集鸣叫声和三种性腺激素 T、DHT 和 E2 的血液水平样本。歌曲的变异性和新音节类型的添加在夏季和初秋期间达到最大，并在九月达到顶峰。新音节习得的第二个高峰出现在三月份。 7 月至 8 月和 2 月期间，血液 T 水平特别低。因此，在新音节习得的两个明显峰值之前约 1 个月，血液 T 水平降低。其他两种激素的血液水平与歌曲学习高峰的相关性不太明显。据推测，荷尔蒙、神经和行为变化的同时发生有利于成年期的歌曲学习。
Samples of song and blood levels of three gonadal hormones, T, DHT, and E2, were taken at monthly intervals from six adult male canaries over a period of 1 year, as these birds went from 12 to 24 months of age. Song variability and addition of new syllable types were maximal during the summer and early fall, with a peak in September. A secondary peak in new syllable acquisition occurred in March. Blood T levels were particularly low during July-August and during February. Thus, a lowering of blood T levels preceded by about 1 month the two marked peaks in new syllable acquisition. Blood levels of the two other hormones were related less obviously to song learning peaks. It is hypothesized that a concurrence of hormonal, neural, and behavioral changes facilitates song learning in adulthood.