Table 1 Comparison of total numbers and sex ratio ratios of Phlebotomus orientalis sand flies captured by coloured sticky traps (STs) under different lunar light conditions and traps orientations in Belo Village (Gedarif state, Sudan; April–June 2016–2018)
Trap colour | na | Total no. of sand flies | No. of males | No. of females | Male:Femaleb sex ratio |
|---|---|---|---|---|---|
Experiment 1: Performance of vertical coloured STs under quarter-half-lunar light conditions | |||||
 Black | 18 | 6 | 6 | 0 | na |
 Red | 21 | 23 | 22 | 1 | 22:1 |
 Transparent | 20 | 62 | 58 | 4 | 15:1 |
 White | 22 | 182 | 174 | 8 | 22:1 |
 Yellow | 22 | 166 | 155 | 11 | 15:1 |
 Total | 103 | 439 | 415 | 24 | 17:1 |
Experiment 2: Performance of vertical STs traps under full lunar light conditions | |||||
 Black | 8 | 5 | 3 | 2 | 2:1 |
 Blue | 8 | 35 | 32 | 3 | 11:1 |
 Green | 6 | 42 | 40 | 2 | 20:1 |
 Red | 7 | 4 | 4 | 0 | na |
 Transparent | 8 | 81 | 74 | 7 | 11:1 |
 White | 8 | 414 | 408 | 6 | 68:1 |
 Yellow | 5 | 21 | 18 | 3 | 6:1 |
 Total | 50 | 602 | 579 | 23 | 25:1 |
Experiment 3: Performance of vertical coloured STs under dark night conditions | |||||
 Black | 4 | 7 | 6 | 1 | 6:1 |
 Blue | 4 | 27 | 25 | 2 | 13:1 |
 Green | 4 | 56 | 46 | 10 | 5:1 |
 Red | 4 | 13 | 11 | 2 | 6:1 |
 Transparent | 4 | 77 | 63 | 14 | 5:1 |
 White | 4 | 53 | 46 | 7 | 7:1 |
 Yellow | 4 | 29 | 27 | 2 | 14:1 |
 Total | 28 | 262 | 224 | 38 | 6:1 |
Experiment 4: Performance of horizontal coloured STs under dark night conditions | |||||
 Blue | 8 | 8 | 6 | 2 | 3:1 |
 Green | 8 | 2 | 1 | 1 | na |
 Red | 8 | 7 | 5 | 2 | 3:1 |
 Transparent | 8 | 16 | 11 | 5 | 2:1 |
 White | 8 | 72 | 47 | 25 | 2:1 |
 Yellow | 8 | 30 | 21 | 9 | 2:1 |
 Total | 48 | 135 | 91 | 44 | 2:1 |