文献类型： 外文期刊

作者： Zou, Deyu ¹ ; Coudron, Thomas A. ² ; Zhang, Lisheng ³ ; Xu, Weihong ¹ ; Xu, Jingyang ¹ ; Wang, Mengqing ³ ; Xiao, Xuez ¹ ;

作者机构： 1.Tianjin Acad Agr Sci, Inst Plant Protect, Biol Control Insects Res Lab, Tianjin 300384, Peoples R China

2.USDA ARS, Biol Control Insects Res Lab, Columbia, MO 65203 USA

3.Chinese Acad Agr Sci, Inst Plant Protect, Key Lab Integrated Pest Management Crops, Minist Agr, Beijing 100193, Peoples R China

4.Tianjin Agr Univ, Coll Hort & Landscape, Tianjin 300392, Peoples R China

关键词： Coenosia attenuata; mass rearing; wing damage; Bradysia impatiens; Drosophila melanogaster; fecundity

期刊名称：INSECTS （ 影响因子：2.769； 五年影响因子：3.046 ）

ISSN：

年卷期： 2021 年 12 卷 8 期

页码：

收录情况： SCI

摘要： Simple Summary The predaceous fly Coenosia attenuata Stein has received attention because of its ability to effectively suppress a wide range of agricultural pests, such as fungus gnats, whiteflies and leaf miners. An effective level of control requires large numbers of C. attenuata to be available at low cost for release. Adult fungus gnats and drosophilids are now the main prey used to rear C. attenuata adults. However, previous studies showed C. attenuata fertility is lower when fed drosophilids compared to fungus gnats. The current study investigated the performance of C. attenuata adults when reared on different densities of adult Drosophila melanogaster Meigen or Bradysia impatiens (Johannsem). Results showed that the optimal prey density in the mass rearing of adult C. attenuata was 12-24 adult B. impatiens daily per predator. Additionally, C. attenuata adults suffered more wing damage, at some of the prey densities, when reared on D. melanogaster compared to B. impatiens. This information will be used to optimize rearing methods and decrease the cost of mass rearing in C. attenuata. Mass production of Coenosia attenuata Stein at low cost is very important for their use as a biological control agent. The present study reports the performance of C. attenuata adults when reared on Drosophila melanogaster Meigen or Bradysia impatiens (Johannsem). Different densities (6, 9, 15, 24 and 36 adults per predator) of D. melanogaster or (6, 12, 24, 36 and 48 adults per predator) of B. impatiens were used at 26 +/- 1 degrees C, 14:10 (L:D) and 70 +/- 5% RH. The results concluded that C. attenuata adults had higher fecundity, longer longevity and less wing damage when reared on B. impatiens adults compared to D. melanogaster adults. Additionally, C. attenuata adults demonstrated greater difficulty catching and carrying heavier D. melanogaster adults than lighter B. impatiens adults. In this case, 12 to 24 adults of B. impatiens daily per predator were considered optimal prey density in the mass rearing of adult C. attenuata.