Moore C L
J Comp Physiol Psychol. 1976 Jun;90(6):583-89. doi: 10.1037/h0077240.
Noncycling, progesterone-injected, experienced male ring doves prefer eggs to squabs in a simultaneous squab-egg choice test, while experienced male doves injected with both progesterone and prolactin prefer squabs to eggs. When exogenous prolactin is administered to either naive or experienced male ring doves during the early phase of a normal incubation cycle, squab choice is significantly increased. Squab choice is also significantly increased in incubating doves by 24 hr of exposure to a squab in the home nest. This effect is greater in naive than in experienced doves. Squabs introduced during late incubation have more of a positive effect on squab choice than when introduced during early incubation. It is concluded that intracyclic experience organizes successive behavioral changes within a reproductive cycle and that naive doves are more affected by some changes in intracyclic events than are experienced doves.
在一项同时提供雏鸽和鸽蛋的选择测试中，未处于繁殖周期、注射了孕酮的成年雄性环颈鸽比起雏鸽更喜欢鸽蛋，而同时注射了孕酮和催乳素的成年雄鸽则更喜欢雏鸽而非鸽蛋。在正常孵化周期的早期阶段，当向初次经历或已经历过繁殖的雄性环颈鸽体内注射外源性催乳素时，选择雏鸽的比例会显著增加。在家巢中接触雏鸽24小时，也会使正在孵化的鸽子选择雏鸽的比例显著增加。这种影响在初次经历繁殖的鸽子中比在已经历过繁殖的鸽子中更大。与在孵化早期引入雏鸽相比，在孵化后期引入雏鸽对选择雏鸽的影响更大。研究得出的结论是，繁殖周期内的经历会在一个繁殖周期内组织连续的行为变化，并且与已经历过繁殖的鸽子相比，初次经历繁殖的鸽子更容易受到繁殖周期内某些事件变化的影响。
