Table 7. Test catches at E-nets with frames of various colour and different distances from the grids, compared to control catches using E-nets with standard frames.
Insect | Test frame | Total catch | Percent catch | |||
---|---|---|---|---|---|---|
Colour | Distance | Test | Control | Mean | 95% CL | |
Tsetse | Aluminium | 27.5cm | 382 | 248 | 154* | 131–181 |
Black | 2.5cm | 346 | 256 | 135* | 115–159 | |
27.5 | 305 | 214 | 143* | 119–171 | ||
Yellow | 2.5cm | 318 | 325 | 98 | 84–115 | |
27.5 | 362 | 334 | 108 | 93–126 | ||
Muscoids | Aluminium | 27.5cm | 1131 | 819 | 138* | 126–151 |
Black | 2.5cm | 898 | 660 | 136* | 123–151 | |
27.5cm | 1162 | 780 | 149* | 136–163 | ||
Yellow | 2.5cm | 591 | 467 | 127* | 112–143 | |
27.5cm | 284 | 224 | 127* | 106–152 | ||
Tabanids | Aluminium | 27.5cm | 189 | 64 | 295* | 221–399 |
Black | 2.5cm | 113 | 81 | 140* | 104–188 | |
27.5cm | 206 | 93 | 222* | 173–286 | ||
Yellow | 2.5cm | 21 | 29 | 72 | 39–131 | |
27.5cm | 15 | 7 | 214 | 82–621 |
The mean percent catch is the total catch with the test frame, as a percent of the total at the control. The control frame was aluminium colour, at a distance of 2.5cm. In each comparison the pulse interval was 15ms and the energy per pulse was 175mJ. An asterisk next to the mean percent catch indicates that the catch with the test frame differed from that with the control frame, at P<0.05.