Figure 4

Activity levels of Callinectes sapidus; numbers on the bars represent sample size. Row 1: Activity level of C. sapidus zoeae (a) and megalopae (b) as a function of algicide concentration over a 24-h period. Animals were first pre-exposed to the listed concentrations of algicide for 24 h, then placed into tubes of algicide-free water for activity measurements over the subsequent 24 h. Row 2: Data from (a) and (b) broken down into activity per 30 min and separated by time of day for zoeae (c) and megalopae (d). Notice the scale differences among the graphs. (*p < 0.05).