Data from: Intraspecific brain size variation between coexisting sunfish ecotypes

Caleb J. Axelrod, Frederic Laberge & Beren W. Robinson
Variation in spatial complexity and foraging requirements between habitats can impose different cognitive demands on animals that may influence brain size. However, the relationship between ecologically-related cognitive performance and brain size is not well established. We test whether variation in relative brain size and brain region size in fish is associated with habitat use within a population of pumpkinseed sunfish composed of different ecotypes that inhabit either the structurally complex shoreline littoral habitat or simpler...
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