Fig. 2
Life history analyses of different strains of Aedes albopictus. A Temporal trend of pupation rate. B Temporal trend of eclosion rate. C Larval and pupal developmental time. D Pupation rate of larvae and eclosion rate of pupae. A-D n = 3, 50 newly hatched larvae per strain in each experiment. E Survival curves of female adults (n = 40). Comparison of survival curves among different strains and Lab-S based on the Log-rank test: Lab-R30 vs Lab-S (χ2 = 21.42, df = 1, P < 0.0001), R30-1532 T vs Lab-S (χ2 = 63.18, df = 1, P < 0.0001), R30-1534S vs Lab-S (χ2 = 48.55, df = 1, P < 0.0001), R30-M vs Lab-S (χ2 = 2.02, df = 1, P = 0.1553). F Survival curves of male adults (n = 40). Comparison of survival curves among different strains and Lab-S based on the Log-rank test: Lab-R30 vs Lab-S (χ2 = 15.76, df = 1, P < 0.0001), R30-1532 T vs Lab-S (χ2 = 6.96, df = 1, P = 0.0083), R30-1534S vs Lab-S (χ2 = 50.89, df = 1, P < 0.0001), R30-M vs Lab-S (χ.2 = 3.533, df = 1, P = 0.0602). G Weight of adults (n = 4, 8 pooled adults each experiment). H Wing size of adults (n = 30). I Fecundity of female adults (n = 40). J Hatching rate per 100 eggs (n = 4, 100 eggs per strain). K Comprehensive quantification of fitness cost. Population vigor = (number of eggs*hatching rate*pupation rate*eclosion rate*average life span of adults*average weight of adults*average wing length of adults) / (larval development time + pupal development time). Ranking of fitness cost of strains: R30-1534S > Lab-R30 > R30-1532 T > R30-M > Lab-S. The results are represented as the mean ± SD. ns: not significant. Different lowercase letters represent significant differences among sample groups a, b, and c (P < 0.05)