Bottoni L, Massa R, Lea R W, Sharp P J
Department of Biology, University of Milano, Italy.
Horm Behav. 1993 Sep;27(3):308-17. doi: 10.1006/hbeh.1993.1023.
Behavioral patterns, reproductive success, and concentrations of plasma-luteinizing hormone, testosterone, and estrogen were compared in pairs of red-legged partridges which had either selected their own mates or had been randomly paired. Males in self-selected pairs called more frequently than males in non-self-selected pairs. Females in self-selected pairs but not those in non-self-selected pairs guarded their nests. Females in self-selected pairs had a greater egg production and laid more of their eggs in nests than females in non-self-selected pairs. There was a significant difference between the two groups in the concentration of plasma testosterone in males, which was higher in males from self-selected pairs prior to the onset of egg laying. These results are consistent with the hypothesis that mate choice affects both reproductive parameters and nest defense in monogamous birds.
对自行选择配偶或随机配对的红腿鹧鸪进行了行为模式、繁殖成功率以及血浆促黄体生成素、睾酮和雌激素浓度的比较。自行选择配偶的雄鸟比非自行选择配偶的雄鸟鸣叫更频繁。自行选择配偶的雌鸟会守护巢穴，而非自行选择配偶的雌鸟则不会。自行选择配偶的雌鸟产蛋量更高，且在巢中产下的蛋比非自行选择配偶的雌鸟更多。两组雄鸟血浆睾酮浓度存在显著差异，在产蛋开始前，自行选择配偶的雄鸟血浆睾酮浓度更高。这些结果与配偶选择影响一夫一妻制鸟类的繁殖参数和巢穴防御这一假设相一致。
