Table 2. Comparison of catches with pulse intervals of 1ms and 15ms, using the two-site method.

Experiment and test insect	Mean daily catch		Percent catch
	1ms	15ms	Mean	95% CL
Expt. 1. Net alone, 16 replicates
G. m. morsitans males	1.12	0.74	152	32–360
G. m. morsitans females	0.51	0.34	150	7–360
G. pallidipes males	1.40	0.58	241	83–498
G. pallidipes females	1.67	0.90	186	64–394
Total tsetse	5.22	2.85	183	89–347
Muscoids	9.32	4.94	189*	131–269
Tabanids	0.29	0.17	174	51–319
Expt. 2. Net by cloth, 12 replicates
G. m. morsitans males	4.31	3.10	139	84–221
G. m. morsitans females	4.29	2.88	149	77–268
G. pallidipes males	12.15	11.22	108	83–140
G. pallidipes females	30.45	20.62	148	96–225
Total tsetse	54.64	40.43	135*	106–171
Muscoids	68.43	40.13	171	97–298
Tabanids	11.60	5.78	201	85–449
Expt. 3. Cloth alone, 16 replicates
G. m. morsitans males	4.70	4.24	111	64–182
G. m. morsitans females	1.52	2.04	75	31–141
G. pallidipes males	3.75	2.36	159	90–265
G. pallidipes females	5.07	4.87	104	54–187
Total tsetse	17.53	15.40	114	76–169
Muscoids	10.46	4.61	227*	155–327
Tabanids	0.80	0.80	100	57–153

The mean percent catch is the mean daily catch at pulse intervals of 1ms, as a percent of the mean daily catch at 15ms. Energy per pulse was 35mJ at all intervals. An asterisk next to the mean percent catch indicates that the catch with 1ms intervals differed from that with 15ms intervals, at P<0.05.