Fig. 7. Path kinematic parameters of real and simulated searchers. Values are means per path (N=14 paths for each treatment). Analysis of variance (ANOVA) indicates that speed and path efficiency are significantly different across these groups (F_2,39>39.07, P<<0.001 for both comparisons), whereas the ANOVA analysis of stop time indicates a marginally significant effect (F_2,39=3.02, P=0.06). Horizontal lines join pairs that are statistically indistinguishable based on Scheffe's test, for speed and path efficiency. Path efficiency is the total distance traveled relative to the shortest distance from the origin to the destination, and is unity when the searcher takes the shortest, most direct route to the source. Data are from real (hatched bars) and simulated crabs (open and filled bars; rheotaxis weighting in parentheses).