PEAHENS PREFER PEACOCKS WITH ELABORATE TRAINS
PEAHENS PREFER PEACOCKS WITH ELABORATE TRAINS
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DOI：
10.1016/s0003-3472(05)80484-1
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发表时间：
1991-02-01
期刊：
影响因子：
2.5
通讯作者：
SANDERS, C
中科院分区：
文献类型：
--
作者：
PETRIE, M;HALLIDAY, T;SANDERS, C
孔雀（Pavo cristatus）保卫小型展示场所并聚集形成leks。对由 10 只雄性组成的一只 lek 的观察表明，交配成功率存在相当大的差异。最成功的雄性交配了 12 次，而最不成功的雄性则没有交配。超过 50% 的交配成功率差异可归因于列车形态的差异；雄性的眼点数量与其交配的雌性数量之间存在显着的正相关关系。此外，对女性行为的分析提供了充分的证据，表明这种非随机交配是女性偏好的结果。雌性从来不会与第一个向她求爱的雄性交配，平均而言，雌性会拜访三只不同的雄性。因此，雌性总是会拒绝一些潜在的配偶。在以成功交配结束的 11 个序列中的 10 个中，在序列结束时“选择”的雄性在所访问的雄性中具有最高的眼斑数量。这些数据支持达尔文的假设，即孔雀尾羽的进化，至少部分是由于雌性偏好的结果。
Peacocks,Pavo cristatus, defend small display sites and aggregate to form leks. Observations of one lek, consisting of 10 males, showed that there was considerable variance in mating success. The most successful male copulated 12 times whilst the least successful males obtained no copulations. Over 50% of the variance in mating success could be attributed to variance in train morphology; there was a significant positive correlation between the number of eye-spots a male had in his train and the number of females he mated with. Furthermore, analysis of female behaviour provided good evidence that this non-random mating is a result of a female preference. On no occasion did a female mate with the first male that courted her and, on average, females visited three different males. Females thus always reject some potential mates. For 10 out of 11 sequences ending in a successful copulation, the male ‘chosen’ at the end of a sequence had the highest eye-spot number among the males visited. These data support Darwin's hypothesis that the peacock's train has evolved, at least in part, as a result of a female preference.