Social inhibition of song imitation among sibling male zebra finches
Social inhibition of song imitation among sibling male zebra finches
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DOI：
10.1073/pnas.95.15.8951
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发表时间：
1998-07-21
影响因子：
11.1
通讯作者：
Nottebohm, F
中科院分区：
文献类型：
--
作者：
Tchernichovski, O;Nottebohm, F
雄性斑胸草雀（Taeniopygia guttata）与父亲在一起，直到成年后才开始模仿父亲的鸣声母音。我们在这里报告说，这种模仿的完整性对鸟类成长的社会或听觉环境很敏感：一窝雄性兄弟姐妹的数量越多，鸣声母音的平均持续时间越短，模仿父亲鸣声的平均数量越少；后者的不足没有得到其他即兴音符的补偿。我们称这种效应为兄弟抑制，兄弟抑制是由先唱出这首歌的一窝鸟避免的。令我们惊讶的是，这个角色通常落在了孵蛋中的一只年轻的鸟身上。早期的鸣叫学习可能会影响健康，因为模仿最完整的个体也倾向于诱导更多的产卵。
A male zebra finch, Taeniopygia guttata, kept with its father until adulthood develops an imitation of its father's song motif, We report here that the completeness of this imitation was sensitive to the social or auditory context in which the bird grew up: the greeter the number of male siblings in a clutch, the shorter the mean duration of the song motif and the fewer the mean number of song notes imitated from the father; the latter shortfall was not compensated by other, improvised notes. We call this effect fraternal inhibition, Fraternal inhibition was avoided by members of a clutch that developed the song first. To our surprise, this role commonly fell to one of the younger birds in the clutch, Early song learning may influence fitness since individuals that produced the most complete imitations also tended to induce more egg laying.