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Your Position :Home->Past Journals Catalog->2015年52 No.3

Effects of host plants on food consumption and development of Euproctis bipunctapex (Hampson) (Lepidoptera, Lymantriidae)
Author of the article:SU Chao1, 2** JING Jun1, 2 WANG Meng-Meng1 FANG Yan1 LI Kai1, 2***
Author's Workplace:1. School of Life Science, East China Normal University, Shanghai 200241, China; 2. Tiantong National Station of Forest Ecosystem, Shanghai 200241, China
Key Words:Euproctis bipunctapex (Hampson), food consumption, development, host plants, plant protection
Abstract: [Objectives]  To study the effects of five host plants Ficus erecta var. beecheyana, Hovenia acerba, Castanopsis sclerophylla, Myrica rubra and Elaeocarpus decipiens on food consumption and development of Euproctis bipunctapex (Hampson) (Lepidoptera, Lymantriidae). [Methods]  Set five research groups under constant conditions[ (26±1), 80% RH, photoperiod 1212], each groups larvae were fed on different host plants leaves. Indicators such as food consumption, larvae duration, survival rate, fecundity et al. were determined. [Results]  There were significant food consumption differences on Euproctis bipunctapex larvae which were fed on different host plants. The larvae fed on C. sclerophylla had the most food consumption (2 588.15 mg), and those fed on E. decipiens had the least food consumption (1 971.33 mg). But the overall trends of daily food consumption to different host plants were the same, they increased exponentially with time. Larvae food consumption increased dramatically from the 4th instar, and the food consumption of the last three stages took 80.68%-85.91% of the total food consumption. There were also significant differences on the development and fecundity among the larvae fed on different host plants. The larvae fed on F. erecta var. beecheyana had the shortest larvae duration (34.35 d), the highest larvae survival rate (60.20%) and the largest egg number laid per female (281.33). While the larvae duration (41.36 d) was the longest, total survival rate (38.78%) was the lowest, and the egg number laid per female (215.83) was the second least when being fed on E. decipiens. [Conclusion]  Previous 4th instar of E. bipunctapex is the critical period of pest management. C. sclerophylla and M. rubra are suffered most, the food consumption are high. And F. erecta var. beecheyana is the most suitable host plant for E. bipunctapex.
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