• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Imperfectly redundant signals: Color, song, and mate choice in chestnut-sided warblers (Dendroica pensylvanica).
【24h】

Imperfectly redundant signals: Color, song, and mate choice in chestnut-sided warblers (Dendroica pensylvanica).

机译：不完全冗余的信号：栗侧莺（Dendroica pensylvanica）的颜色，歌曲和配偶选择。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Why do so many organisms invest in multiple, multi-modal, sexually selected traits? Two hypotheses explain the evolution of multiple sexually selected traits: (1) the Redundant Signals hypothesis, which states that multiple traits broadcast overlapping information, either to amplify the signal, or to compensate for unreliable signals, and (2) the Multiple Messages hypothesis, which states that each trait broadcasts different information. I tested the redundant signals and multiple messages hypotheses by assessing multiple color and song traits in a colorful migratory songbird, the chestnut-sided warbler (Dendroica pensylvanica). For each warbler, I measured the area and spectral qualities of three plumage patches: the chestnut stripe, black facial mask, and yellow cap. I also measured several singing performance parameters for each of the two categories of songs sung by males of this species. In addition, I explored how color and song traits inform social and genetic mate choice and how female color relates to female defensive behavior. My results indicate that, in general, males with larger and brighter color patches sang their songs more consistently. However, color traits appear to be related to social mate quality, while song traits appear to be related to genetic mate choice. Males and females paired assortatively by color patch area, and colorful males provisioned nestlings at higher rates, while colorful females produced heavier young. Colorful females also exhibited quieter, more cryptic behavior during threats to their nests, while drab females used chipping displays against potential threats. Male warblers with better singing performance experienced more cuckholdry in their social nests, but also sired more extra-pair reproductive young. I interpret these results as evidence for a partial separation in signal content between the two types of sexual signals used by chestnut-sided warblers, with color indicating social mate quality, and song indicating genetic mate quality. And so, color and song traits in chestnut-sided warblers seem to function as imperfectly redundant signals that may also contain multiple messages.
机译：为什么有这么多生物对多种，多模式，性选择的性状进行投资？有两个假设解释了多个性选择特征的演变：（1）冗余信号假说，该假设指出多个特征广播重叠的信息，以放大信号或补偿不可靠的信号；（2）多重消息假说，指出每个特征广播不同的信息。我通过评估五颜六色的迁徙鸣禽（栗子似的莺（Dendroica pensylvanica））中的多种颜色和歌曲特征，测试了冗余信号和多种消息的假设。对于每只莺，我测量了三种羽毛斑块的面积和光谱质量：栗子条纹，黑色面膜和黄色帽。我还测量了该物种的雄性所演唱的两类歌曲中的每一种的几个演唱性能参数。此外，我还探讨了颜色和歌曲特征如何影响社交和遗传伴侣的选择，以及女性肤色与女性防御行为之间的关系。我的结果表明，通常来说，色块较大且较亮的男性会更一致地唱歌。但是，颜色特征似乎与社交伴侣的素质有关，而歌曲特征似乎与遗传伴侣的选择有关。雄性和雌性按色斑区域配对，多彩的雄性以较高的比例提供雏鸟，而多彩的雌性则使幼仔重一些。色彩艳丽的雌性在对巢穴的威胁中也表现出更安静，更隐秘的行为，而单调的雌性则使用碎片显示来抵御潜在的威胁。歌唱表现更好的雄莺在其社交巢穴中经历了更多的骗子活动，但同时也招募了更多的成对繁殖的年轻幼鸟。我将这些结果解释为板栗侧鸣鸟使用的两种性信号之间信号内容部分分离的证据，颜色表示社交伴侣的质量，歌曲表示遗传伴侣的质量。因此，栗子边鸣莺的颜色和歌曲特征似乎是不完美的冗余信号，可能还包含多个消息。

著录项

  • 作者

    Belinsky, Kara Loeb.;

  • 作者单位

    University of Massachusetts Amherst.;

  • 授予单位 University of Massachusetts Amherst.;
  • 学科 Zoology.;Ecology.
  • 学位 Ph.D.
  • 年度 2008
  • 页码 112 p.
  • 总页数 112
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号