Table 1. Samples sizes for infection experiments.

Experiment	Line	Facultative Symbiont	Pre-exposure	Live Challenge	n
Experiment 1	5A0	none	bacterial elicitors	S. marcescens	13
	5A0	none	bacterial elicitors	control	14
	5A0	none	control	S. marcescens	14
	5A0	none	control	control	13
	LSR1	none	bacterial elicitors	S. marcescens	14
	LSR1	none	bacterial elicitors	control	14
	LSR1	none	control	S. marcescens	11
	LSR1	none	control	control	12
Experiment 2	5AR	S . symbiotica	bacterial elicitors	S. marcescens	35
	5AR	S . symbiotica	control	S. marcescens	35
Experiment 3	LSR1	none	bacterial elicitors	S. marcescens	36
	LSR1	none	control	S. marcescens	34
Experiment 4	5A0	none	bacterial elicitors	E. coli	4
	5A0	none	bacterial elicitors	control	5
	5A0	none	control	E. coli	4
	5A0	none	control	control	6
	5AR	S . symbiotica	bacterial elicitors	E. coli	5
	5AR	S . symbiotica	bacterial elicitors	control	6
	5AR	S . symbiotica	control	E. coli	5
	5AR	S . symbiotica	control	control	7
	5AT	H . defensa	bacterial elicitors	E. coli	5
	5AT	H . defensa	bacterial elicitors	control	5
	5AT	H . defensa	control	E. coli	9
	5AT	H . defensa	control	control	6
	5AU	R . insecticola	bacterial elicitors	E. coli	5
	5AU	R . insecticola	bacterial elicitors	control	7
	5AU	R . insecticola	control	E. coli	4
	5AU	R . insecticola	control	control	5
Experiment 5	5AR	S . symbiotica	bacterial elicitors	E. coli	35
	5AR	S . symbiotica	control	E. coli	35
Experiment 6	LSR1	none	bacterial elicitors	E. coli	35
	LSR1	none	control	E. coli	36