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【目的】研究乌桕黄毒蛾Euproctis bipunctapex(Hampson)对5种不同科寄主植物(天仙果Ficus erecta var.beecheyana、拐枣Hovenia acerba、苦槠Castanopsis sclerophylla、杨梅Myrica rubra和杜英Elaeocarpus decipiens)叶片的取食量以及不同寄主植物对乌桕黄毒蛾生长发育和繁殖的影响。【方法】在恒定条件[温度(26±1)℃,相对湿度80%,光周期12L︰12D]下,设置5个处理组,每处理分别投喂不同寄主植物叶片,测定取食量、幼虫历期、存活率、繁殖力等指标。【结果】乌桕黄毒蛾对不同寄主植物的取食量差异显著,苦槠饲喂组最高(2 588.15 mg),杜英饲喂组最低(1 971.33 mg);但对不同植物的日取食量总体趋势相同,随时间呈指数增长,4龄起进入暴食期,4龄、5龄和6龄幼虫取食量占总取食量的80.68%~85.91%。取食不同寄主植物的乌桕黄毒蛾生长发育差异显著,天仙果饲喂组的个体幼虫历期(34.35 d)最短,存活率(60.20%)最高,产卵量(281.33粒/雌)最多,而杜英饲喂组的个体幼虫历期(41.36d)最长,存活率(38.78%)最低,产卵量(215.83粒/雌)较少。【结论】乌桕黄毒蛾虫害防治适期是4龄之前,苦槠和杨梅受乌桕黄毒蛾取食最多,天仙果是乌桕黄毒蛾生长发育的最适寄主植物。
【Objective】 The objective of this study was to investigate the effects of Euproctis bipunctapex (Hampson) on the leaves of five different species of host plants (Ficus erecta var. Beecheyana, Hovenia acerba, Castanopsis sclerophylla, Myrica rubra and Elaeocarpus decipiens) The Influence of Different Host Plants on the Growth, Development and Reproduction of. 【Method】 Under the condition of constant temperature (26 ± 1 ℃, relative humidity 80%, photoperiod 12L: 12D], five treatment groups were set up. Each treatment was fed different host plant leaves to determine the amount of feeding, Duration, survival rate, fertility and other indicators. 【Result】 The results showed that there were significant differences among different host plants in the feeding rate of T. gifuensis. The highest feed intake (2. 588.15 mg) in the bitter gourd and the lowest (1.71333 mg) in the Duying feeding group were the lowest. However, the daily feed intake The overall trend was the same, with the exponential growth over time, 4 into the gluttony period, 4th, 5th and 6th larvae of the total food intake accounted for 80.68% to 85.91%. The growth and development of D. virgata fed on different host plants were significantly different. The individual larvae of P. sinica fed the group had the shortest duration (34.35 days), the highest survival rate (60.20%) and the highest fecundity (281.33 seeds / The larvae of Duying feeding group had the longest duration (41.36 days), the lowest survival rate (38.78%) and the lowest fecundity (215.83 grains / females). 【Conclusion】 The optimum stage of pest control for the yellow-spotted moth was found to be before the 4th instar, while the bitter mullet and the red bayberry were the most eaten by the dark-shelled tussock moth, which was the most suitable host plant for growth and development.