Territory tenure in song sparrows is related to song sharing with neighbours, but not to repertoire size
Territory tenure in song sparrows is related to song sharing with neighbours, but not to repertoire size
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DOI：
10.1006/anbe.1999.1304
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发表时间：
2000-01-01
期刊：
影响因子：
2.5
通讯作者：
Nordby, JC
中科院分区：
文献类型：
--
作者：
Beecher, MD;Campbell, SE;Nordby, JC
歌曲曲目可能是性选择的产物，多项研究报告了雄性鸣禽曲目大小与繁殖成功的相关性。然而，这一假设和报告的相关性不足以解释大多数物种的歌曲曲目规模较小（通常少于10种，通常少于5种歌曲类型）。我们研究了雄性的歌曲曲目的第二个重要方面，他与邻居分享歌曲的程度。歌曲共享在以前的研究中没有被测量过，它可能部分与曲目大小混淆。我们假设，在歌麻雀，Melospiza旋律，歌曲分享，而不是剧目大小本身是男性领土的成功至关重要。我们对45只麻雀在领地生活的第一年进行的纵向研究表明，与其曲目大小相比，鸟类与其邻居群体分享的歌曲数量更能预测其终身领地占有权。我们还发现，歌曲分享随着曲目大小的增加而增加，但不超过8到9种歌曲类型。这是群体中最常见的库大小（在我们的样本中的范围为5 - 13）。这种部分混淆的歌曲共享和剧目大小可能解释了一些早期的发现领域的任期剧目大小相关性在这个物种和其他物种有小或中型剧目，（C）2000年nle协会的闪亮的动物行为。
Song repertoires may be a product of sexual selection and several studies have reported correlations of repertoire size and reproductive success in male songbirds. This hypothesis and the reported correlations, however, are not sufficient to explain the observation that most species have small song repertoire sizes (usually fewer than 10, often fewer than five song types). We examined a second important aspect of a male's song repertoire, the extent to which he shares songs with his neighbours. Song sharing has not been measured in previous studies and it may be partially confounded with repertoire size. We hypothesized that in song sparrows, Melospiza melodia, song sharing rather than repertoire size per se is crucial for male territorial success. Our longitudinal study of 45 song sparrows followed from their first year on territory showed that the number of songs a bird shares with his neighbourhood group is a better predictor of lifetime territory tenure than is his repertoire size, We also found that song sharing increases with repertoire size up to but not beyond eight to nine song types, which are the most common repertoire sizes in the population (range in our sample 5-13). This partial confound of song sharing and repertoire size may account for some earlier findings of territory tenure-repertoire size correlations in this species and other species having small- or medium-sized repertoires, (C) 2000 nle Association for the Shiny of Animal Behaviour.