Figure 5.

Loading efficiency for the transport of two experimentally manipulated types of prey by E. burchellii. Loading efficiency was significantly lower for non-ant prey (white diamonds) than for ant-like prey (grey diamond; prey-type effect, F_1,145=94.82, p<0.0001, η²=40%; colony effect, not significant). For the loading efficiency for ant-like prey P=4.69227A^0.95938 (solid regression line, n=75, r²=0.58, p<0.0001), and for the loading efficiency for non-ant prey P=1.69963A^1.47265 (dashed regression line, n=75, r²=0.34, p<0.0001), where P is the wet mass of a prey item, and A is the dry mass of the ant(s).