Table 1.

Mean (± s.e.) and the linear mixed-effect model results comparing the walking speed and drowning rate of ants from colonies not exposed (NIC−) and exposed (NIC+) to sublethal doses of the neonicotinoid. For each treatment, n = 40.

species	response	mean (±s.e.)		b (s.e.)	t	p
		NIC−	NIC+
native Southern ant	walking speed (cm s−1) drowning rate	0.455 (−0.020) 2.854 (0.448)	0.476 (−0.015) 2.038 (0.315)	0.021 (0.06) −0.816 (0.55)	0.371 −1.490	0.712 0.140
invasive Argentine ant	walking speed (cm s−1) drowning rate	0.833 (0.028) 1.137 (0.176)	0.765 (0.021) 2.246 (0.446)	−0.068 (0.03) 1.109 (0.75)	−1.980 1.473	0.051 0.145