Undirected Song in Wild Zebra Finch Flocks: Contexts and Effects of Mate Removal
Undirected Song in Wild Zebra Finch Flocks: Contexts and Effects of Mate Removal
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野生斑胸草雀群中的无向鸣叫：交配去除的背景和影响
DOI：
10.1111/j.1439-0310.1996.tb01145.x
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发表时间：
2010
期刊：
影响因子：
1.7
通讯作者：
R. Zann
中科院分区：
文献类型：
--
作者：
A. M. Dunn;R. Zann
野生斑胸草雀（Taeniopygia guttata）全年频繁鸣叫，但最常见的无定向鸣叫的功能尚不清楚。成对的雄鸟通常在觅食的鸟群中唱无方向的歌，这种情况在非繁殖季节比在繁殖季节更频繁。雄性的鸣唱率差异很大。歌手的背景和鸟群成员没有任何公开的反应排除了直接的攻击和吸引配偶的功能。无导歌曲的表演可能有能量消耗和掠夺性风险。研究发现，歌手是有“空闲时间”的活跃个体，他们既不饿，也不累，也没有性冲动，这表明歌手是在宣传自己作为潜在伴侣和/或参与额外配对交配的“品质”。在实验中，当非繁殖配偶中的雌性伴侣被移除时，“鳏夫”的无定向鸣叫率显著增加。雄企鹅很快就重新配对了。这个实验支持了一种假设，即鸟群中的歌声具有吸引配偶的作用。
Wild zebra finches, Taeniopygia guttata, sing frequently throughout the year but the function of undirected song, the most prevalent type, is unknown. Paired males commonly sang undirected song in feeding flocks where it occurred more frequently in the non-breeding season than in the breeding season. Song rate varied greatly among males. The context of the singer and the absence of any overt responses from flock members excludes direct aggressive and mate-attracting functions. Performance of undirected song may have energetic costs and predatory risks. The finding that singers are active individuals with ‘spare time’, that are neither hungry, nor tired, nor sexually motivated, suggests that singers are advertising their ‘quality’ as potential mates and/or participants for extra-pair copulations. When the female partner in non-breeding pairs was experimentally removed, the rate of undirected song of the ‘widower’ increased significantly. Males quickly re-paired. This experiment supports the hypothesis that singing in the flock has a mate-attracting role.