Journal
SCIENCE
Volume 332, Issue 6029, Pages 583-586Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1201524
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Funding
- NSF [IOS-0818390, DEB-0919499]
- Division Of Environmental Biology
- Direct For Biological Sciences [0919499] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0818390] Funding Source: National Science Foundation
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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.
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