Table 2.

Parameters used in modelling simulations.

	minimal model		strain-specific model
	social agents	solitary agents	npr-1 agents	N2 agents
step length on food	to direct neighbourhood	to direct neighbourhood	in a group: to direct neighbourhood alone: to remote neighbourhood	to direct neighbourhood
step length off food	to remote neighbourhood	to remote neighbourhood	to remote neighbourhood	to remote neighbourhood
feeding rate	1 food unit per time step	1 food unit per time step	0.4*0.62 food unit per time stepa	0.4 food unit per time stepa
food-leaving probability	Not used	Not used	0	0

^aFeeding rates in the strain-specific model are scaled down to 0.4 for N2 and 62% of that for npr-1 [28] to broadly match the experimental time to food depletion in figure 5, based on a time step of Δt = 10 s.