Invasive Species Compendium

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Abstract

Adult longevity, fecundity, and population growth rates for Trialeurodes ricini Misra (Homoptera: Aleyrodidae) at different constant temperatures.

Abstract

Longevity and reproductive potential of adult males and females of Trialeurodes ricini were determined under laboratory conditions at constant temperatures of 20, 25, 30 or 35 ± 1°C. The resulting data were used to calculate life tables and rates of increase at each temperature. Females of T. ricini oviposited means of 183, 224, 294, and 132 eggs at 20, 25, 30, and 35°C, respectively, and had a mean longevity of 38.52, 28.15, 15.78, and 10.11 days at the same four temperatures. The net reproductive rate was 49.92, 72.26, 111.08, and 38.44, and the daily intrinsic rate of increase was 0,05, 0.11, 0.18, and 0.15 at 20, 25, 30, and 35°C, respectively. Generation times decreased from 69.88 to 24.92 days with increasing temperature. It is concluded that T. ricini can, in otherwise unlimited conditions, persist and increase in numbers within the range 20-35°C.