Tchernichovski O, Schwabl H, Nottebohm F
The Rockefeller University Field Research Center
Anim Behav. 1998 Apr;55(4):1003-10. doi: 10.1006/anbe.1997.0673.
We explored the conditions under which playbacks of male zebra finch, Taeniopygia guttata, song induced reproduction in females. In a laboratory study, a rise in faecal oestrogen levels predicted egg laying. Song playbacks by themselves induced a decrease in oestrogen levels. There was an increase in oestrogen levels, followed by egg laying, when the song was broadcast from inside a male model positioned away from the nest. However, this effect occurred only when a second, silent male model was perched on the rim of the nest. If song was broadcast from inside the model perched on the nest, there was no increase in oestrogen levels. We conclude that tests of song efficacy in female songbirds must respect some contextual rules, which are likely to vary between species. Only then does it become possible to ascertain which sounds are most effective in inducing physiological changes leading to reproduction. Copyright 1998 The Association for the Study of Animal Behaviour. Copyright 1998 The Association for the Study of Animal Behaviour.
我们探究了雄性斑胸草雀（Taeniopygia guttata）歌声回放诱导雌性繁殖的条件。在一项实验室研究中，粪便中雌激素水平的升高预示着产卵。单独的歌声回放会导致雌激素水平下降。当歌声从放置在远离巢穴的雄性模型体内播放时，雌激素水平会升高，随后产卵。然而，这种效应只有在另一只沉默的雄性模型栖息在巢穴边缘时才会出现。如果歌声从栖息在巢穴上的模型体内播放，雌激素水平不会升高。我们得出结论，在雌性鸣禽中测试歌声的功效必须遵循一些情境规则，这些规则可能因物种而异。只有这样，才有可能确定哪些声音在诱导导致繁殖的生理变化方面最有效。版权所有1998年动物行为研究协会。版权所有1998年动物行为研究协会。
