Effects of Temperature and Photoperiod on Development and Reproductive Potential of Liriomyza chinensis (Diptera: Agromyzidae)

摘要

The effects of temperature and photoperiod on the development (oviposition to adult emergence) of Liriomyza chinensis Kato at five constant temperatures (15, 18, 20, 25, and 30 degrees C) under a 15L9D photoperiod and at 18 degrees C under a 10L14D photoperiod, and its reproductive potentials and adult longevity at three constant temperatures (20, 25, and 30 degrees C) under a 15L9D photoperiod were examined on Welsh onion plants. The total developmental period of L. chinensis decreased from 68.3 days at 15 degrees C to 19.4 days at 30 degrees C with a 15L9D photoperiod. A significantly longer developmental period was found with a 10L14D than 15L9D photoperiod at 18 degrees C. The developmental zeros for the total development was 9.1 degrees C. The effective accumulative temperature was 393.6 day-degrees. The adult emergence rates were the highest at 20 degrees C. The next generation adults were highest at 25 degrees C (103.6/female). Female adult longevities at 20, 25, and 30 degrees C were 17.8, 12.9, and 6.5 days, respectively. The intrinsic rates of natural increase at 20, 25, and 30 degrees C were 0.06, 0.10, and 0.09, respectively.