Watercress and Water Quality: The Effect of Phenethyl Isothiocyanate on the Mating Behaviour of Gammarus pulex

Figure 4

Proportion of pairs separated at two-hour test end (±SE). Wash water exposures (WW5 and WW2) are shown as green, and PEITC exposures (P3 and P5) are shown as blue. The 95% upper and lower confidence intervals for the initial control exposures are shown as dotted lines for comparative purposes.