Table 3. Susceptibility against permethrin and DDT of F1 larvae and female adults produced by individual blood-fed females collected in houses in Gembe East, Mbita and western islands, Kenya.
| Species | House ID2) , 3) | F1 larvae | F1 adults (WHO Tube Test) | |||||||
| N | Susceptibility Index (d-allethrin) | Permethrin 0.75% | DDT 4% | RR %1) | ||||||
| N | KT50 (min.) | % Mortality | N | KT50 (min.) | % Mortality | |||||
| An. arabiensis | NYAND 6 | 24 | 6 | 20 | 45–60 | 75.0 | 10 | 20–30 | 100 | 0 |
| NYAND 8 | 26 | 6 | 26 | >60 | 48.0 | 17 | 29.1 | 100 | 0 | |
| NYAND 11 | 30 | 6 | 30 | >60 | 30.0 | 25 | 34.2 | 100 | 0 | |
| NYAND 13 | 10 | 6 | 4 | >60 | 75.0 | - | - | - | 0 | |
| NYAR 1 | - | - | 13 | >60 | 23.1 | 12 | 30–45 | 100 | 0 | |
| NYAR 3 | 10 | 6 | 13 | 47.5 | 76.9 | 10 | 28.1 | 100 | 0 | |
| NYAR 5 | 74 | 12 | 45 | >60 | 64.4 | 33 | 41.0 | 100 | 0 | |
| NYAR 6 | 14 | 6 | 10 | >60 | 50.0 | 10 | 30–45 | 100 | 0 | |
| NYAR 8 | 10 | 12 | 10 | >60 | 44.4 | 10 | 27.3 | 100 | 0 | |
| An. gambiae s.s. | ICIPE4) | 40 | 2 | 26 | 38.1 | 100 | 21 | 30.2 | 100 | 0 |
| NYAND 8 | - | - | 3 | >60 | 33.3 | 3 | 45–60 | 100 | 0 | |
| MFA 1 | 20 | 36 | 32 | >60 | 50.0 | 25 | >60 | 56.0 | 100 | |
| MFA 6 | 14 | 36 | 27 | >60 | 0 | 28 | >60 | 13.8 | 100 | |
| TAKA 4 | 8 | 30 | 15 | >60 | 14.3 | 15 | >60 | 60.0 | 100 | |
| An. funestus s.s | NYAND 11 | - | - | 2 | 30–45 | 50.0 | - | - | - | 0 |
| NYAR 1 | 10 | 6 | 16 | >60 | 26.7 | 12 | 32.6 | 83.3 | 0 | |
| NYAR 3 | - | - | 12 | >60 | 54.5 | 1- | 30–45 | 100 | 0 | |
| NYAR 7 | 20 | 36 | 8 | 30.6 | 62.5 | 4 | 20.8 | 100 | 0 | |
| NYAR 8 | - | - | 1 | >60 | 0 | - | - | - | 0 | |
1)
% of homozygous L1014S mutation,
2)
Collection site - House No.,
3)
NYAND, Nyandago; NYAR, Nyaroya; MFA, Mfangano; TAKA, Takawiri,
4)
Laboratory colony reared in ICIPE since the collection at Lwanda, Mbita in 2002.