Table S5.

Counts of daily uterus eggs of close nematode species.

Nematode	Reproductive day number	OP50			CFBb37			Different between the strains P (paired t-test)
		Number of tested hermaphrodites	Number of eggs in uterus/individual (mean ± SE)	Greater than zero P (one-sample t-test)	Number of tested hermaphrodites	Number of eggs in uterus/individual (mean ± SE)	Greater than zero P (one-sample t-test)
C. elegans	Day 1	32	3.94 ± 0.68	<0.001	35	1.57 ± 0.34	<0.001	0.0051
	Day 2	32	25.25 ± 1.12	<0.001	31	3.13 ± 0.32	<0.001	<0.001
	Day 3	29	5.38 ± 0.98	<0.001	42	4.02 ± 0.33	<0.001	0.06615
	Day 4	30	1.13 ± 0.34	<0.01	32	3.69 ± 0.33	<0.001	<0.001
	Day 5	37	0.03 ± 0.03	>0.05	34	3.5 ± 0.46	<0.001	<0.001
	Day 6				37	3.22 ± 0.51	<0.001
	Day 7				34	2.29 ± 0.36	<0.001
	Day 8				35	0.43 ± 0.16	<0.01
C. briggsae	Day 1	39	3.30 ± 0.73	<0.001	39	0.51 ± 0.09	<0.001	<0.001
	Day 2
	Day 3	34	4.09 ± 0.39	<0.001	35	0.6 ± 0.15	<0.001	<0.001
	Day 4	39	2.38 ± 0.24	<0.001	32	0.81 ± 0.14	<0.001	<0.001
	Day 5	35	0.2 ± 0.07	<0.01	35	1.46 ± 0.15	<0.001	<0.001
	Day 6	34	0.09 ± 0.05	>0.05	31	1.45 ± 0.19	<0.001	<0.001
	Day 7				32	0.63 ± 0.15	<0.001
C. tropicalis	Day 1	33	2.09 ± 0.22	<0.001	32	0.28 ± 0.09	<0.001	<0.001
	Day 2	32	3.47 ± 0.23	<0.001	37	2.76 ± 0.32	<0.001	0.2149
	Day 3	38	1.87 ± 0.23	<0.001	36	3.19 ± 0.4	<0.001	0.0044
	Day 4	28	0.64 ± 0.23	<0.05	38	2.6 ± 0.24	<0.001	<0.001
	Day 5	36	0.19 ± 0.13	>0.05	34	2.94 ± 0.36	<0.001	<0.001
	Day 6				36	1.53 ± 0.2	<0.001
	Day 7				27	1.63 ± 0.22	<0.001
	Day 8				17	0.82 ± 0.16	<0.01
P. sp.	Day 1	34	3.23 ± 0.55	<0.001	32	3.28 ± 0.26	<0.001	0.595
	Day 2	36	3.67 ± 0.63	<0.001	38	1.61 ± 0.18	<0.001	<0.001
	Day 3	39	1.38 ± 0.24	<0.001	36	1.58 ± 0.12	<0.001	0.629
	Day 4	36	0.19 ± 0.03	<0.05	36	1.56 ± 0.12	<0.001	<0.001
	Day 5	34	0.15 ± 0.03	>0.05	40	1.80 ± 0.16	<0.001	<0.001
	Day 6				35	1.06 ± 0.13	<0.001	<0.001
	Day 7				53	0.81 ± 0.10	<0.001	<0.001

SE, standard error.