Table 1.

Parameter values generating the results seen in Fig 2 and 3.

Parameter	Symbol	Base value
Resource value of victim in cluster1	v1	1.5
Resource value of victim in cluster2	v2	1
Resource value of victim in cluster3	v3	0.2
Maximum fitness of victim	β	1.1
Slope parameter of victim fitness function	δ	4
Intensity of density dependence	d	0.6
Population growth rate	γ	12.2
Maximum resource value of victim	vmax	1.5
Cost for egg-load	k1	0.7
Cost for a victim’s defense	k2	0.35
Generation span of victim population	gs	50
Signal mutation probability	ps	0.01
Signal mutation range	rs	0.05
Maximum attack intensity (available eggs)	φ	2
Abruptness of density dependence in exploiters	α	3
Half-initial-value constant of exploiter fitness function	ɛ1/2	1
Probability of synapse strength mutation	pn	0.1
Range of synapse strength mutation	rn	0.5
Range of synapse strength values	sr	10