Data from: The behavioral origins of novelty: did increased aggression lead to scale-eating in pupfishes?

Michelle E. St. John, Joseph A. McGirr & Christopher H. Martin
Behavioral changes in a new environment are often assumed to precede the origins of evolutionary novelties. Here, we examined whether an increase in aggression is associated with a novel scale-eating trophic niche within a recent radiation of Cyprinodon pupfishes endemic to San Salvador Island, Bahamas. We measured aggression using multiple behavioral assays and used transcriptomic analyses to identify differentially expressed genes in aggression and other behavioral pathways across three sympatric species in the San Salvador...
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