Numbers of ephyrae produced by polyps in combined temperature and salinity treatments. Each salinity bar
represents the mean of three temperature treatments. Similarly, each temperature bar represents the mean of four salinity
treatments. Initial numbers of polyps are given above each bar. Food levels were lower in Experiment 1 than in
Experiment 3, which explains the difference in numbers of ephyrae produced (from Purcell et al., 1999c).