Table 1.

The size of N2 worms with or without JU1410-derived pheromone with (A) live or (B) dead E. coli OP50, showing the mean length (SD = standard deviation), and t-test results comparing the pheromone-treated and control worms (significant effects are in bold), and (C) the larval stage of development after 36 h of growth as judged by the development of the vulva as in (A) showing the number and, in parentheses, the proportion at each stage

	Without pheromone		With pheromone		t-test
Time (h)	Length (μm)	SD	Length (μm)	SD	d.f.	t	P
(A)
0	284.89	42.87	287.63	26.70	nd	nd	nd
12	344.45	17.54	342.08	27.65	33	0.34	0.74
24	573.36	76.46	560.87	45.07	33.4	0.67	0.51
36	683.58	51.07	804.24	65.86	50.5	−7.86	<0.001
48	931.95	143.34	1061.76	106.71	43.3	−3.93	<0.001
60	1050.69	77.81	1282.13	84.13	74.8	−12.54	<0.001
72	1269.93	50.59	1399.32	95.65	57.4	−7.28	<0.001
96	1351.72	50.76	1496.66	113.61	50.7	−7.03	<0.001
120	1426.73	144.42	1524.65	116.55	30.6	−2.16	0.04
168	1399.29	119.21	1538.65	146.62	23.2	−2.73	0.01
(B)
12	369.8678	24.67	370.37	25.53	67.4	−0.08	0.94
24	454.81	33.69	470.23	31.05	74.8	74.79	0.04
36	685.24	91.94	713.83	71.71	78.6	78.59	0.12
48	946.89	79.87	961.37	81.85	84.0	83.95	0.41
60	1126.54	66.14	1127.45	92.39	67.88	−0.05	0.96
72	1273.73	70.68	1316.78	57.96	80	−3.03	0.003
96	1298.74	49.27	1311.07	39.78	88.47	−1.36	0.18
120	1402.26	55.53	1412.51	67.68	93.07	−0.83	0.41
168	1506.47	72.66	1493.70	77.99	97.51	0.85	0.40
(C)
Developmental stage		Without pheromone			With pheromone
Early L3		1 (0.04)			0 (0)
Mid L3		0 (0)			0 (0)
Late L3		1 (0.04)			1 (0.04)
L3/L4 moult		3 (0.12)			0 (0)
Early L4		9 (0.36)			1 (0.04)
Mid L4		5 (0.2)			6 (0.23)
Late L4		4 (0.16)			14 (0.54)
Late L4 to adult		2 (0.08)			4 (0.15)
Total		25 (1)			26 (1)

L is larval stage. nd = done