Food deprivation-dependent development and fecundity in Ophraella communa

文献类型： 外文期刊

第一作者： Zhou, Zhong-Shi

作者： Zhou, Zhong-Shi;Luo, Min;Guo, Jian-Ying;Chen, Hong-Song;Wan, Fang-Hao

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期刊名称：BIOCONTROL SCIENCE AND TECHNOLOGY （ 影响因子：1.665； 五年影响因子：1.616 ）

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收录情况： SCI

摘要： Ophraella communa LeSage is native to North America and a biological control agent of the invasive weed Ambrosia artemisiifolia L. Since A. artemisiifolia plants grow old and die after September annually, O. communa suffers from food shortage. To understand the effect of food shortage or deprivation on population fitness of O. communa, the development and fecundity and hatchability of its progeny eggs were observed when larvae were offered A. artemisiifolia plants for either 3, 6, 12 or 24 hours daily. The results showed that larval food deprivation significantly influenced survival and developmental durations of larvae and pupae. Survival rates and developmental durations of larvae and pupae decreased and were prolonged significantly with decreasing time of larval daily food intake. Longevity and fecundity of adults shortened and decreased significantly with decreasing time of larval daily food intake. In addition, the hatch rates of progeny eggs decreased significantly with decreasing time of larval daily food intake. The present study suggests that food shortage is one of the most critical factors that suppresses O. communa populations. This can explain why field populations of the beetle decrease significantly with ageing and death of A. artemisiifolia plants after late September

分类号： S476

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