Goldsmith A R, Burke S, Prosser J M
J Endocrinol. 1984 Nov;103(2):251-6. doi: 10.1677/joe.0.1030251.
Prolactin and LH concentrations were measured in the plasma of female canaries sampled during the breeding cycle and after disruption and reinitiation of incubation behaviour. The late incubation period was characterized by low LH and high prolactin concentrations, and canaries separated from their nests at this stage showed an increased in LH and a decline in prolactin within 3 h. In one experiment mean (+/- S.E.M.) concentrations before and 24 h after nest deprivation were: prolactin 397 +/- 86 and 18 +/- 5 micrograms/l; LH 1.04 +/- 0.21 and 2.03 +/- 0.17 micrograms/l. Female canaries which abandoned their nests after the eggs had been removed also showed an increase in LH together with a fall in prolactin 24 h after egg removal. When nest-deprived canaries were allowed to resume incubation, plasma prolactin increased again within 5 h and after 2 days had reached levels normal for incubating birds (398 +/- 46 micrograms/l). Concentrations of LH changes more gradually but had decreased 2 days after the resumption of incubation. Thus prolactin and LH show inverse changes after the disruption and reinitiation of incubation behaviour; it is not clear, however, if the change in one is dependent on the other or if both hormones are responding to the same external stimulus.
在雌性金丝雀繁殖周期以及孵化行为被干扰和重新开始期间采集的血浆中，测量了催乳素和促黄体生成素的浓度。孵化后期的特征是促黄体生成素浓度低而催乳素浓度高，在此阶段与巢分离的金丝雀在3小时内促黄体生成素增加而催乳素下降。在一项实验中，剥夺巢穴前和剥夺后24小时的平均（±标准误）浓度分别为：催乳素397±86和18±5微克/升；促黄体生成素1.04±0.21和2.03±0.17微克/升。在卵被移除后放弃巢穴的雌性金丝雀在卵被移除24小时后也表现出促黄体生成素增加以及催乳素下降。当剥夺巢穴的金丝雀被允许恢复孵化时，血浆催乳素在5小时内再次增加，2天后达到孵化期鸟类的正常水平（398±46微克/升）。促黄体生成素的浓度变化较为缓慢，但在恢复孵化2天后有所下降。因此，催乳素和促黄体生成素在孵化行为被干扰和重新开始后呈现相反的变化；然而，尚不清楚一种激素的变化是否依赖于另一种激素，或者两种激素是否都对相同的外部刺激做出反应。
