Our new paper on the fitness consequences of honest signaling is online in Evolution. We show that individually consistent variation in honest signaling during aggressive interaction leads to survival differences, with under-signalers (those who do not signal their aggressive intent but nevertheless behave aggressively) being favored for survival compared to reliable signalers. In other words, there is negative correlational selection on aggression and aggressive signaling, even though these two traits are correlated with each other positively across individuals. This result poses a puzzle for how honest signaling is maintained in this reliable signaling system.
he ain’t no under-signaler.