Table 1.

Analysis of the time at which nematode larvae emerge from infected insects. (This analysis is performed using a Cox proportional hazard model, with differences among replicate experiments modelled as a random block factor (see §2 for further details). In the first analysis, all lineages are considered and the difference between the ancestral and the selected lineages is tested. In the second analysis, only selected bacteria are considered and the effect of virulence (1/LT₅₀), speed at which bacteria start multiplying (1/ML) and haemolytic activity (total haemolysis) are tested.)

	coefficient	s.e.	p-value
all lineages (n = 874)
insect weight	1.37	0.79	0.083
injected CFU	0.001	0.001	0.095
HDI	−0.43	0.18	0.020
LDI	−0.32	0.17	0.066
selected lineages (n = 794)
insect weight	1.69	0.85	0.047
injected CFU	0.002	0.001	0.037
1/LT50	35.09	12.52	0.005
1/ML5	−51100	21960	0.020
total haemolysis	0.16	0.20	0.420