Table 2.
Frequency of sibling species of the An. gambiae (s.l.) complex in IRS and control areas
| Period | No. of analysed samples in IRS areas | Alibori (IRS Area 1) | Donga (IRS Area 2) | Total (IRS Areas) | Bembereke (Control area) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| An. gambiae | An. coluzzii | An. arabiensis | An. gambiae | An. coluzzii | An. arabiensis | An. gambiae | An. coluzzii | An. arabiensis | An. gambiae | An. coluzzii | An. arabiensis | ||
| Before IRS (May 2016–October 2016) | 980 | 170 | 271 | 0 | 387 | 152 | 0 | 557 | 423 | 0 | – | – | – |
| After IRS (June 2017–November 2018) | 1794 | 466 | 176 | 17 | 520 | 147 | 5 | 986 | 323 | 22 | 277 | 181 | 5 |
| Proportion (%) | – | 70.71 | 26.70 | 2.57 | 77.38 | 21.87 | 0.74 | 74.07 | 24.26 | 1.65 | 59.82 | 39.09 | 1.07 |
| Total (Before + after IRS) | 2774 | 636 | 447 | 17 | 907 | 299 | 5 | 1543 | 746 | 22 | 277 | 181 | 5 |
| Proportion (%) | – | 57.81 | 40.63 | 1.54 | 74.89 | 24.69 | 0.41 | 66.76 | 32.28 | 0.95 | 59.82 | 39.09 | 1.07 |