Reevaluation of biosecurity of Ophraella communa against sunflower (Helianthus annuus)
文献类型: 外文期刊
第一作者: Zhou, Zhong-Shi
作者: Zhou, Zhong-Shi;Guo, Jian-Ying;Zheng, Xing-Wen;Luo, Min;Chen, Hong-Song;Wan, Fang-Hao;Zheng, Xing-Wen;Luo, Min;Chen, Hong-Song
作者机构:
关键词: host specificity;biosecurity;sunflower;Ophraella communa;Ambrosia artemisiifolia;biological control
期刊名称:BIOCONTROL SCIENCE AND TECHNOLOGY ( 影响因子:1.665; 五年影响因子:1.616 )
ISSN: 0958-3157
年卷期: 2011 年 21 卷 10 期
页码:
收录情况: SCI
摘要: Ophraella communa (Coleoptera: Chrysomelidae), originally from North America, has been used for biological control of common ragweed, Ambrosia artemisiifolia, in China since 2007. However, there is still a debate on whether O. communa can attack sunflowers under field conditions. To re-evaluate the biosecurity of O. communa against sunflower (Helianthus annuus), we investigated the population density of O. communa on three sunflower varieties that were intercropped with or planted in circumambience of A. artemisiifolia under field conditions. Our results showed that only very few O. communa eggs (<0.5 eggs/plant) were found on sunflower plants at the last two surveys when sunflowers were planted in circumambience of common ragweed. O. communa eggs were not found on sunflower plants at each survey when sunflowers were intercropped with common ragweed. The first-second instar larvae, third instar larvae, pupae and adults of O. communa were occasionally found on sunflower plants, but their densities were very low under either case of planting patterns. Based on these results, we conclude that sunflower is not a potential host plant for O. communa and the beetle is an effective host-specific biological control agent of common ragweed.
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