Experiment 2: investigating asocial foraging behaviour in a novel arena. (a) The proportion of movement occurring along the arena edge (total movements in edge squares ÷ total movements in all squares, mean ± s.e.), a measure of thigmotaxis. See main text for further details. (b) The latency to find the prey patch (in seconds, mean ± s.e.). Based on untransformed data. RM, reproductive males; GF, gravid females; NR, non-reproductives. *p < 0.05.