Brain Evolution Triggers Increased Diversification of Electric Fishes
Brain Evolution Triggers Increased Diversification of Electric Fishes
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DOI：
10.1126/science.1201524
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发表时间：
2011-04-29
期刊：
影响因子：
56.9
通讯作者：
Arnegard, Matthew E.
中科院分区：
文献类型：
--
作者：
Carlson, Bruce A.;Hasan, Saad M.;Arnegard, Matthew E.
交流可以通过促进物种形成和加强现有物种之间的生殖隔离来促进生物多样性的进化。物种特异性信号的进化取决于个体检测信号变化的能力，而信号变化又依赖于大脑处理信号信息的能力。在这里，我们表明，进化变化的大脑区域致力于通信信号的分析，提高了检测细微的信号变化，导致信号进化和物种多样化的速度增强。这些结果表明，神经创新可以驱动信号的多样化并促进物种形成。
Communication can contribute to the evolution of biodiversity by promoting speciation and reinforcing reproductive isolation between existing species. The evolution of species-specific signals depends on the ability of individuals to detect signal variation, which in turn relies on the capability of the brain to process signal information. Here, we show that evolutionary change in a region of the brain devoted to the analysis of communication signals in mormyrid electric fishes improved detection of subtle signal variation and resulted in enhanced rates of signal evolution and species diversification. These results show that neural innovations can drive the diversification of signals and promote speciation.