Table 2.

Competitiveness studies performed on Anopheles mosquitoes under laboratory conditions. The ratio of irradiated males (I ♂) competing with un-irradiated males (U ♂) for un-irradiated females (U ♀) is given. Insects were irradiated in air. Stage of irradiation is pupa (P) or adult (A). Where eggs were collected en masse, the competitiveness value (C) is calculated according to the Fried index ([51]; see text). In the lower part of the table data were collected by individual egg batches and C = (Sterile batches/Fertile batches) * (Number un-irradiated males/Number of sterile males)

I♂	U♂	U♀	Dose (Gy)	Species	Stage	Age (hrs)	Hatch (%)		C value	Ref.
							Obs.	Exp.
1	1	1	120	An. pharoensis	P	20-24	39	34	0.72	[60]
5	1	1					20	11	0.47
10	1	1					4	6	1.58
15	1	1					1	4	4.40
10	1	11					6	7	1.03
1	1	1	118	An. quadrimaculatus	P	24	74	48	0.30	[42]
2	1	1					85	32	0.06
3	1	1					42	24	0.43
4	1	1					53	19	0.20
6	1	1					42	14	0.21
10	1	1					28	9	0.24
1	1	1	80	An. stephensi	P	4-28	54	50	0.88	[57]
1	1	1	120				66	50	0.51
							# Batches		C value
							Fertile	Sterile
1	1	1	120	An. gambiae s.s.	P	0-7	30	7	0.24	[47]2
1	1	1			P	24-32	22	10	0.47
1	1	1			A	< 24	24	26	1.06
1	1	1			A	> 24	21	23	1.10
1	1	1	120	An. stephensi	P	0-7	32	6	0.20
1	1	1			P	24-32	29	9	0.32
1	1	1			A	< 24	22	22	1.07
1	1	1			A	> 24	19	24	1.35
1	1	1	70	An. arabiensis	P	20-26	102	73	0.76	[61]3
1	1	1	120		P	20-26	141	43	0.34
1	1	1	70		A	< 24	80	69	0.85
1	1	1	120		A	< 24	114	59	0.54
1	1	1	120		P	23-27	14	6	0.43	[39]
1	1	1	120	An. gambiae s.s.	P	22-27	20	14	0.70
1	1	1			A	< 24	39	48	3.20

¹ Laboratory irradiated males competed against wild males for wild females under laboratory conditions.

²Fertile and sterile batches averaged for the three replicates.

³Small cage results only.