Data from: Predator-driven brain size evolution in natural populations of Trinidadian killifish (Rivulus hartii)

Matthew R. Walsh, Whitnee Broyles, Shannon M. Beston & Stephan B. Munch
Vertebrates exhibit extensive variation in relative brain size. It has long been assumed that this variation is the product of ecologically driven natural selection. Yet, despite more than 100 years of research, the ecological conditions that select for changes in brain size are unclear. Recent laboratory selection experiments showed that selection for larger brains is associated with increased survival in risky environments. Such results lead to the prediction that increased predation should favour increased brain...
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