Fig. 1: Artificial selection on dispersal.

A Experimental arena setup used to assay the dispersal behaviour of experimental Tribolium castaneum populations and provide a basis on which to artificially select individuals displaying high and low dispersal propensity. B Mean dispersals per individual (of a maximum of three) for each T. castaneum selection line across four generations of selection on high and low dispersal (generation 1 represents behaviour in the stock population). Orange and blue represent high and low selection regimes respectively. Solid lines connect repeated measurements from the same selection line, while dashed lines show predictions generated by a GLM fitting the interaction of selection regime and generation modelled as a second order polynomial.