Table 1 Study design (top) and number of apartments included in resistance intervention strategies (bottom) tested in parallel at two housing sites in Danville, IL and Indianapolis, IN. Abbreviations are as follow: Ab, Abamectin (bait; Vendetta); Ba, Boric acid (bait; Magnetic); T + λ, Thiamethoxam + λ-cyhalothrin (spray; Tandem); Ab + P, Abamectin + Pyriproxyfen (bait; Vendetta Plus); C, Collect live cockroaches for lab colony rearing and future resistance assessment (RA). Density categories are based on initial month-0 population assessments from average trap catches (ATC): (i) ATC >0 to <6, (ii) ATC > 6 and (iii) adjacent apartments with starting ATC = 0.
Months post-treatment | Resistance management treatments | |||
|---|---|---|---|---|
Single AI | Rotation | Mixture | ||
0 | May | Ab | Ab | T + λ |
1 | June | Ab | Ba | T + λ |
2 | July | Ab | T + λ | T + λ |
3 | August | Ab | Ab | T + λ |
4 | September | Ab | Ba | C + (Ab + P) |
5 | October | Ab | T + λ | Ab + P |
6 | November | C | C | No action |
Density category | Number of apartments per treatment | |||
Indianapolis, IN | i | 5 | 4 | 5 |
ii | — | — | — | |
iii | 9 | 15 | 14 | |
Total | 14 | 19 | 19 | |
Danville, IL | i | 5 | 6 | 4 |
ii | 4 | 4 | 7 | |
iii | 7 | 8 | 3 | |
Total | 16 | 18 | 14 | |
