Matched filters, mate choice and the evolution of sexually selected traits.
Matched filters, mate choice and the evolution of sexually selected traits.
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DOI：
10.1371/journal.pone.0003005
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发表时间：
2008-08-20
期刊：
影响因子：
3.7
通讯作者：
Römer H
中科院分区：
文献类型：
--
作者：
Kostarakos K;Hartbauer M;Römer H
理解通信系统进化的基础是信号的变化及其如何影响接收者的行为，以及接收者偏好函数的变化，以及这如何影响信号的可变性。然而，女性偏好函数的个体差异及其直接原因很少被研究。雄性蟋蟀的鸣叫是第二性征，受雌性蟋蟀的性选择支配。根据“匹配过滤器假说”的预测，我们研究了一只野蟋蟀中一个已识别的中间神经元的调谐，该神经元以其趋声性功能而闻名，并将其与双选择试验中同一雌性的偏好联系起来。雌性的神经元频率调节不同，这有力地预测了在两首不同载波频率的歌曲之间的选择情况下的偏好。第二种“匹配过滤器”存在于定向听觉中，在这种情况下，声音定位的可靠线索只出现在一个狭窄的频率范围内。在无选择测试中，方向调整与行为偏好之间存在很强的相关性。这第二个“匹配过滤器”在女性中也有很大的差异，令人惊讶的是，与神经元频率调谐平均相差400赫兹。我们对两个“匹配过滤器”不匹配的研究结果表明，这两个过滤器的差异似乎是由它们的进化史引起的，以及特定生态环境下声发射、传输和探测之间存在的不同权衡，以及定向听力。不匹配滤波器的情况可能最终解释了尽管稳定选择，雄信号的载波频率仍然保持相当大的变化。
Fundamental for understanding the evolution of communication systems is both the variation in a signal and how this affects the behavior of receivers, as well as variation in preference functions of receivers, and how this affects the variability of the signal. However, individual differences in female preference functions and their proximate causation have rarely been studied. Calling songs of male field crickets represent secondary sexual characters and are subject to sexual selection by female choice. Following predictions from the “matched filter hypothesis” we studied the tuning of an identified interneuron in a field cricket, known for its function in phonotaxis, and correlated this with the preference of the same females in two-choice trials. Females vary in their neuronal frequency tuning, which strongly predicts the preference in a choice situation between two songs differing in carrier frequency. A second “matched filter” exists in directional hearing, where reliable cues for sound localization occur only in a narrow frequency range. There is a strong correlation between the directional tuning and the behavioural preference in no-choice tests. This second “matched filter” also varies widely in females, and surprisingly, differs on average by 400 Hz from the neuronal frequency tuning. Our findings on the mismatch of the two “matched filters” would suggest that the difference in these two filters appears to be caused by their evolutionary history, and the different trade-offs which exist between sound emission, transmission and detection, as well as directional hearing under specific ecological settings. The mismatched filter situation may ultimately explain the maintenance of considerable variation in the carrier frequency of the male signal despite stabilizing selection.
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影响因子：
2.9
作者：
Hunt, J;Brooks, R;Jennions, MD
通讯作者：
Jennions, MD
DOI：
10.1007/bf00603821
发表时间：
1986-01-01
影响因子：
2.1
作者：
RHEINLAENDER, J;ROMER, H
通讯作者：
ROMER, H
影响因子：
2.8
作者：
Hedwig, B;Poulet, JEA
通讯作者：
Poulet, JEA
影响因子：
64.8
作者：
HILL, KG;BOYAN, GS
通讯作者：
BOYAN, GS
影响因子：
64.8
作者：
Hedwig, B;Poulet, JFA
通讯作者：
Poulet, JFA