Experimental analysis of multivariate female choice in gray treefrogs (Hyla versicolor): evidence for directional and stabilizing selection.
Experimental analysis of multivariate female choice in gray treefrogs (Hyla versicolor): evidence for directional and stabilizing selection.
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DOI：
10.1111/j.1558-5646.2009.00746.x
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发表时间：
2009-10
期刊：
影响因子：
--
通讯作者：
Brooks R
中科院分区：
文献类型：
--
作者：
Gerhardt HC;Brooks R
即使是简单的生物信号在几个可测量的维度上也是不同的。因此，理解它们的进化需要对选择的多变量理解，包括不同属性如何相互作用来确定信号的有效性。我们将实验操作和多变量选择分析相结合，以评估雌性灰树蛙对简单颤音叫声的选择。我们独立地和随机地改变了154个合成呼叫中与行为相关的五个声学特性。我们比较了154名女性每个人对其中一个呼叫的响应时间，以及它对具有这五个属性平均值的标准呼叫的响应时间。我们发现方向选择和二次选择在两个属性上指示信令量，脉冲数和呼叫率。适应度曲面的典型旋转表明，这些特性以及脉搏频率对稳定选择的主轴有很大贡献，这一结果与单变量研究一致，研究表明，增加脉搏数远远超过平均值的影响会减弱。光谱特性有助于稳定选择的第二个主轴。破坏性选择的单一长轴表明，两个时间和两个光谱特性的组合，其值不同于平均值，应该特别有吸引力。
Even simple biological signals vary in several measurable dimensions. Understanding their evolution requires, therefore, a multivariate understanding of selection, including how different properties interact to determine the effectiveness of the signal. We combined experimental manipulation with multivariate selection analysis to assess female mate choice on the simple trilled calls of male gray treefrogs. We independently and randomly varied five behaviorally relevant acoustic properties in 154 synthetic calls. We compared response times of each of 154 females to one of these calls with its response to a standard call that had mean values of the five properties. We found directional and quadratic selection on two properties indicative of the amount of signaling, pulse number and call rate. Canonical rotation of the fitness surface showed that these properties, along with pulse rate, contributed heavily to a major axis of stabilizing selection, a result consistent with univariate studies showing diminishing effects of increasing pulse number well beyond the mean. Spectral properties contributed to a second major axis of stabilizing selection. The single major axis of disruptive selection suggested that a combination of two temporal and two spectral properties with values differing from the mean should be especially attractive.
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影响因子：
3.3
作者：
LANDE, R;ARNOLD, SJ
通讯作者：
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影响因子：
2.4
作者：
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2.5
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通讯作者：
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通讯作者：
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作者：
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通讯作者：
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