文献类型： 外文期刊

作者： Huang, Ningxing ¹ ; Enkegaard, Annie ¹ ;

作者机构： 1.Aarhus Univ, Fac Agr Sci, Inst Integrated Pest Management, Res Ctr Flakkebjerg, DK-4200 Slagelse, Denmark

2.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China

关键词： prey preference;predation capacity

期刊名称：BIOCONTROL （ 影响因子：3.571； 五年影响因子：3.243 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The predation capacity and prey preference of larvae of Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae) on eggs or larvae of Pieris brassicae (Linnaeus) (Lepidoptera: Pieridae) in the absence and presence of cabbage aphids as an alternative prey were evaluated in laboratory experiments at 25A degrees C. Both instars preyed upon butterfly eggs and larvae as well as on cabbage aphids with the third instar being the most voracious. The lacewings had a strong preference for caterpillars to butterfly eggs. In the presence of the aphids the predation on P. brassicae eggs or larvae was either completely abandoned or reduced by about 70%, respectively, by second instar lacewings and either reduced by about 80% or maintained, respectively, by third instar lacewings. Both instars thus had a clear preference for aphids compared to eggs of P. brassicae. However, second instar lacewings preferred aphids to caterpillars whereas the opposite was the case for third instar lacewings. The results indicate that 3rd instar C. carnea has a potential as biocontrol agent against P. brassicae.