Table 2. Number of mosquitoes in clusters when 80 spectra collected from wild mosquitoes were randomly selected and maintained for the rest of the analysis, while changing the age of the laboratory-reared mosquitoes.

Age	Cluster	Number of laboratory	Number of wild	Total	Av. SC*	χ2**	p-value
1	1	34	38	72	0.48
	2	46	42	88	0.77	0.40	0.53
	Total	80	80	160
3	1	33	46	79	0.64
	2	47	34	81	0.65	4.23	0.04
	Total	80	80	160
5	1	46	29	75	0.69
	2	34	51	85	0.69	7.31	0.01
	Total	80	80	160
7	1	47	38	85	0.67
	2	33	42	75	0.73	2.03	0.15
	Total	80	80	160
9	1	37	42	79	0.71
	2	43	38	81	0.66	0.63	0.43
	Total	80	80	160
11	1	30	40	70	0.82
	2	50	40	90	0.41	2.54	0.11
	Total	80	80	160
15	1	34	43	77	0.45
	2	46	37	83	0.78	2.03	0.15
	Total	80	80	160
20	1	35	42	77	0.60
	2	45	38	83	0.74	1.23	0.27
	Total	80	80	160
25	1	47	29	76	0.66
	2	33	51	84	0.70	8.12	0.01
	Total	80	80	160

* Average silhouette coefficient

**Chi square