Table 2. Induced sterility and male mating competitiveness index of HC, IHC and IGUA Aedes albopictus males in the large cages at a 5:1 (sterile: fertile) ratio.
Male: Male | Fertility* (%) (Mean/Mean ± 95% CI) (Number of eggs estimated) | IS (Mean ± SD) | C (Mean ± SD) |
---|---|---|---|
Fertile control | 86.0 (85.4–86.5) (2478) (Hn) | ||
Sterile Control HC | 0.1 (0–0.2) (2278) (Hs) | ||
HC: GUA | 20.0 ± 13.7 ab (4278) (Ho) | 76.7 ± 8.7 ab | 0.67 ± 0.34 ab |
Sterile Control IHC | 0.1 (0–0.2) (1765) (Hs) | ||
IHC: GUA | 15.7 ± 3.7 a (4836) (Ho) | 81.7 ± 2.3 a | 0.94 ± 0.17 a |
Sterile Control IGUA | 3.4 (2.9–3.9) (2124) (Hs) | ||
IGUA: GUA | 31.7 ± 13.6 b (4325) (Ho) | 63.1 ± 8.6 b | 0.41 ± 0.19 b |
*:Two replicates each of the fertile and sterile control cages and four replicates of the experimental cages were performed.
CI: Confidence interval.
Hn: Mean egg hatch rate of fertile control cages; Hs: Mean egg hatch rate of sterile control cages; Ho: Mean egg hatch rate of treatment cages.
IS: Induce sterility, calculated as 100% minus the residual fertility values, which was calculated from Ho / Hn.
C: Male mating competitiveness index, calculated as: C = [(Hn—Ho) / (Ho—Hs)] * (N / S), where N and S were the numbers of fertile and sterile males.
Within column, values followed by different lowercase letters were statistically different using ANOVA analysis and Tukey hoc post-test (P<0.05).