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首页> 美国卫生研究院文献>Royal Society Open Science >Songbird dynamics under the sea: acoustic interactions between humpback whales suggest song mediates male interactions
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Songbird dynamics under the sea: acoustic interactions between humpback whales suggest song mediates male interactions

机译：海上的鸣禽动态：座头鲸之间的声学​​相互作用表明歌曲会介导雄性相互作用

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摘要

The function of song has been well studied in numerous taxa and plays a role in mediating both intersexual and intrasexual interactions. Humpback whales are among few mammals who sing, but the role of sexual selection on song in this species is poorly understood. While one predominant hypothesis is that song mediates male–male interactions, the mechanism by which this may occur has never been explored. We applied metrics typically used to assess songbird interactions to examine song sequences and movement patterns of humpback whale singers. We found that males altered their song presentation in the presence of other singers; focal males increased the rate at which they switched between phrase types (p = 0.005), and tended to increase the overall evenness of their song presentation (p = 0.06) after a second male began singing. Two-singer dyads overlapped their song sequences significantly more than expected by chance. Spatial analyses revealed that change in distance between singers was related to whether both males kept singing (p = 0.012), with close approaches leading to song cessation. Overall, acoustic interactions resemble known mechanisms of mediating intrasexual interactions in songbirds. Future work should focus on more precisely resolving how changes in song presentation may be used in competition between singing males.
机译：歌曲的功能已在众多分类单元中得到了很好的研究，并在介导性交和性交互动中发挥作用。座头鲸是少数唱歌的哺乳动物，但是对该物种中歌曲的性选择的作用了解甚少。尽管一个主要的假设是歌曲会介导男性与男性之间的互动，但这种机制可能从未发生过。我们应用了通常用于评估鸣鸟互动的指标，以检查座头鲸歌手的歌曲序列和移动模式。我们发现，在其他歌手在场的情况下，男性改变了他们的歌曲表现；专注的男性增加了他们在乐句类型之间切换的速率（p = 0.005），并且在第二位男性开始唱歌之后，倾向于提高歌曲表现的整体均匀度（p = 0.06）。两位歌手的双子重叠的歌曲序列大大超出了偶然的预期。空间分析表明，歌手之间的距离变化与两人是否都唱歌有关（p = 0.012），而接近的方法会导致歌曲停止。总体而言，声学相互作用类似于介导鸣禽中性行为的已知机制。未来的工作应集中在更精确地解决如何在唱歌男性之间的比赛中使用歌曲表现形式的变化。

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