Effects of temperature and humidity on the growth,development and reproduction of Tuta absoluta Meyrick
The tomato leafminer(Tuta absoluta Meyrick)(Lepidoptera)has become an important agricultural pest in China.Understanding the effects of temperature and humidity on their developmental period is essential for predicting their population dynamics.In this study,we used the hermaphroditic life table method to determine the pupation rate,feathering rate and oviposition rate of T.absoluta at 10％,25％,50％and 75％relative humidity,and the development period,generation cycle,larval survival rate,adult survival rate and egg production of single female by each insect state of T.absoluta at the temperatures of 15℃,20℃,25℃,30℃ and 35℃.The results showed that the pupation rate and oviposition rate of T.absoluta showed a trend of increasing and then decreasing with the increase of humidity,and 75％relative humidity was the optimum humidity for its development.The development period gradually shortened with the increase of temperature under different temperature conditions,the longest development period was 63.3 d at 15℃,only 23.6 d at 30℃,and the development of generations could not be completed at 35℃.Female adults reproduced fastest and laid the highest number of eggs at 25℃,with a single female laying 112 eggs.The net value-added rate and perimeter growth rate firstly increased and then decreased with the increase of temperature,indicating that both high and low temperature were not suitable for the increase of T.absoluta population,and 25℃ was the optimum development temperature.
Tuta absoluta Meyrickrelative humiditytemperatureage-agegender life tablegrowth and developmentreproduction
NETL
NSTL
万方数据
