Abstract:

Aponychus corpuzae runs bisexual reproduction or arrhenotoky; Female adult oviposits 1~2 eggs every day and the total is 9.8 eggs averagely in life cycle, The sex ratio is 2.35:1 in nature.Female adults and eggs in diapause from November to March the following year.In certain temperature range, the mites growth become quicker with the rising of the temperature, and their grow th accumulated temperature from egg to lying egg is 280.76 d.℃.Besides Phyllostachys heterocycla, the mites can aslo feed on the le aves of Dendrocalamus basihirsuta, Pleioblastus incannatus, Indocalamus longiuritus and Bambusa pachinensis, and complete their life cycle, but can' t feed on D.latiflorus and Phyllostachys nigras.shortterm raining cause the larvae, nymphs and adults to die intensely, 69.35 %mortality are found from the egg soaked in w ater over 24 hours.Analysis result by the gray sequence theory indicates:the g ray sequence of factors to the amount of the larvae, nymphs and adults is humidity >rainfall>natural enemy >air temperature, and of factors to the eggs or the population is all humidity>naturalenemy >rainfall>air temperature.

Key words: Aponychus corpuzae, Effective accumulated temperature, The gray sequence