Sexual signaling pattern correlates with habitat pattern in visually ornamented fishes
Sexual signaling pattern correlates with habitat pattern in visually ornamented fishes
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DOI：
10.1038/s41467-020-16389-0
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发表时间：
2020-05-22
影响因子：
16.6
通讯作者：
Mendelson, Tamra C.
中科院分区：
文献类型：
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作者：
Hulse, Samuel, V;Renoult, Julien P.;Mendelson, Tamra C.
性信号设计是一个进化难题，感官驱动假说已经部分解决了这个问题。在信号检测理论的框架下，感官驱动假定信号的吸引力取决于它的可检测性，通过与背景的对比来衡量。然而，认知科学家已经表明，人类更喜欢与自然场景的空间统计相匹配的图像。这种解释是在信息论框架中，即吸引力是由信息处理的效率决定的。在这里，我们将这一框架应用于动物，使用傅里叶分析比较了10种飞蛾（Etheostoma spp.）与它们各自栖息地的身体图案的空间统计。研究发现，雄性斑纹的空间统计与栖息地的空间统计有显著的相关性，而雌性斑纹的空间统计与栖息地的空间统计没有显著的相关性。我们的研究结果支持一个感官驱动假说，即有效的信息处理是信号进化的驱动力。感官驱动理论认为，对性信号的选择应该取决于环境背景。在这里，Hulse等人分析了10种镖鱼的身体图案的空间统计数据，发现只有雄性与栖息地空间统计数据相关，这与通过感官驱动进行的性选择一致。
Sexual signal design is an evolutionary puzzle that has been partially solved by the hypothesis of sensory drive. Framed in signal detection theory, sensory drive posits that the attractiveness of a signal depends on its detectability, measured as contrast with the background. Yet, cognitive scientists have shown that humans prefer images that match the spatial statistics of natural scenes. The explanation is framed in information theory, whereby attractiveness is determined by the efficiency of information processing. Here, we apply this framework to animals, using Fourier analysis to compare the spatial statistics of body patterning in ten species of darters (Etheostoma spp.) with those of their respective habitats. We find a significant correlation between the spatial statistics of darter patterns and those of their habitats for males, but not for females. Our results support a sensory drive hypothesis that recognizes efficient information processing as a driving force in signal evolution. Sensory drive theory posits that selection on sexual signals should depend on the environmental background. Here, Hulse et al. analyze the spatial statistics of body patterning in 10 darter fish species and find a correlation with habitat spatial statistics only for males, consistent with sexual selection via sensory drive.