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Chinese Journal of Applied Ecology ›› 1997, Vol. 8 ›› Issue (2): 185-188.

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Prediction on occurrence of Pandermis heparana

Yang Chuncai1, Zhao Yiqin1, Wang Chengyang1   

  1. Anhui Agricultural University, Hefei 230036
  • Received:1996-10-21 Revised:1997-02-13 Online:1997-03-25 Published:1997-03-25

Abstract: Pandermis heparana is an insect seriously harmful to the flowers, shrubs and trees in garden. Its larvae feed on their tender buds and leaves, resulting in the decrease of the ornamental value of these plants. In order to control the pest,it is very important to predict accurately on the occurrence of its various growing phases.After raising this insect at varying temperature indoor for more than one generation,the necessary initial development temperature(C) and effective accumulated temperature (K) were found for each phase of its development:egg stage C= 14.83 ±1.38(℃),K=64.11±6.68(DD);larval stage C=15.24±1.41(℃), K=252.58± 21.40 (DD);pupal stage C=15.06±1.01(℃),K=68.94±5.48(DD);a generation C=15.28±3.31(℃), K=382.47±26.92(DD).Based on these parameters,the prediction is quite successful.

Key words: Pandermis heparana, Initial development temperature, Effective accumulated temperature, net photosynthetic rate, impervious pavement, chlorophyll fluorescence, urban tree, pervious pavement