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1 July 1999 Life table studies of Eotetranychus kankitus (Acari: Tetranychidae) at different temperatures
Liang Zhou, Bisong Yue, Fangdong Zou
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Life table parameters including net reproductive rate (R0), finite rate of increase (λ), doubling time for population (dt) and mean generation time (T) of Eotetranychus kankitus Ehara were studied at five constant temperatures. The intrinsic rate of natural increase (rm) of E. kankitus was compared to those of two associated mites on citrus, Panonychus citri (McGregor) and Agistemus exsertus Gonzalez. The highest mean number of eggs (87.96 eggs/female), with daily oviposition rate of 2.06 eggs/female/day, was obtained at 20°C whereas the highest daily oviposition rate (3.73 eggs/female/day ) was observed at 35°C with a total of 55 eggs produced by each female. At 15°C , the lowest R0 (16.64) and the longest generation time (T=48.62 days) resulted in a lowest rm (0.058) and longest dt (11.95 days). The highest rm (0.223) and λ (1.2493) were obtained at 35°C and population can double in only 3.11 days. The rm values of E. kankitus at the five tested temperatures are lower than those of P. citri and A. exsertus.

© 1999 Systematic & Applied Acarology Society
Liang Zhou, Bisong Yue, and Fangdong Zou "Life table studies of Eotetranychus kankitus (Acari: Tetranychidae) at different temperatures," Systematic and Applied Acarology 4(1), 69-73, (1 July 1999).
Accepted: 1 April 1999; Published: 1 July 1999

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