Figure 5.

Competitions in the selective environment between Late ecotypes reveal (A) fitness of Studded (circle) remains nearly constant when competing with Wrinkly (open square), regardless of Wrinkly starting density, but (B) fitness of Ruffled (triangle) declines as Wrinkly density increases. Wrinkly fitness is also greatest at low density, regardless of its competitor. Starting yield of Wrinkly varied across experiments, whereas the yield of the other competitor was kept constant.