Differences in timing of mating swarms in sympatric populations of Anopheles coluzzii and Anopheles gambiae s.s. (formerly An. gambiae M and S molecular forms) in Burkina Faso, West Africa

Table 2 Comparisons of the mean times (minutes) of swarming activity in relation to sunset

	*An. coluzzi*		*An. gambiae s.s.*
	mean	se	mean	se	t-test	df	p
Offset between swarm start and sunset	6.76	0.26	3.41	0.26	9.2515	979.98	<0.0001
Offset between swarm end and sunset	29.85	0.29	25.34	0.29	11.0077	752.92	<0.0001
Swarm duration	21.39	0.33	23.37	0.33	4.1444	775.62	<0.0001

N = 500 for swarm start times, and 400 for swarm end times and swarm duration (see details in Table 1 legend). Note swarm end times were not recorded for 2009.

ISSN: 1756-3305