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Mediterranean fruit fly, Ceratitis capitata Wiedemann (Diptera: Tephritidae) is one of the most important and harmful pests of citrus fruit trees in the world and Iran. The effect of temperature on the parameters of the life table of C. capitata was studied at 10, 12, 15, 17, 20, 25, 27, 30, 32 and 35 °C, 60±5 RH and a photoperiod of 16L: 8D, under the laboratory conditions. The longest and shortest oviposition periods were observed at temperatures of 20 (134 and 157 days) and 30 °C (82 and 74 days) in the populations of Mazandaran and Fars provinces, respectively. The highest and lowest fecundity rates were observed 3016 at 27 and 917 (eggs/females) at 20 °C in Mazandaran population and 4890 and 955 (eggs/female) at 27 and 20 °C in Fars population, respectively. Demographic parameters of Mediterranean fruit fly was different at studied temperatures. The highest value of the net reproductive rate (R0), intrinsic rate of increase (rm) and finite rate of increase (λ) were 223.9 (female/female), 0.121 (per day), and 1.129 per day at 27 °C in Mazandaran population, while they were 847.7 (female/female) at 27 °C and 0.112 (per day) and 1.119 (per day) at 30 °C in Fars population. The shortest mean generation time (T) was 39.91 (days) at 25 and 41.21 (days) at 30 °C in Mazandaran and Fars population, respectively.
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