Functional response of Chrysoperla carnea （Neuroptera： Chrysopidae） to Helicoverpa armigera （Lepidoptera： Noctuidae） Effect of prey and predator stages  

作　　者：Mehdi Hassanpour Jafar Mohaghegh Shahzad Iranipour Gadir Nouri-Ganbalani Annie Enkegaard 

机构地区：[1]Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardabil [2]Iranian Research Institute of Plant Protection (IRIPP), Tehran [3]Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran [4]Department of Integrated Pest Management, Research Centre Flakkebjerg, Faculty of Agricultural Sciences, Aarhus University, Slagelse, Denmark

出　　处：《Insect Science》2011年第2期217-224,共8页昆虫科学（英文版）

摘　　要：Understanding predator-prey interactions has a pivotal role in biological control programs. This study evaluated the functional response of three larval instars of the green lacewing, Chrysoperla carnea （Stephens）, preying upon eggs and first instar larvae of the cotton bollworm, Helicoverpa armigera Hubner. The first and second instar larvae of C. carnea exhibited typeⅡ functional responses against both prey stages. However, the third instar larvae of C. carnea showed a type II functional response to the first instar larvae of H. armigera, but a typeⅢ functional response to the eggs. For the first instar larvae of C. carnea, the attack rate on H. armigera eggs was significantly higher than that on the larvae, whereas the attack rate of the second instar C. carnea on H. armigera larvae was significantly higher than that on the eggs. For the third instar larvae of C. carnea, the attack rate on the larvae was 1.015±0.278/h, and the attack coefficient on the eggs was 0.036 ±0.005. The handling times of the third instar larvae on larvae and eggs were 0.087 ± 0.009 and 0.071 ± 0.001 h, respectively. The highest predation rate was found for the third instar larvae of C. carnea on H. armigera eggs. Results of this study revealed that the larvae of C. carnea, especially the third instar, had a good predation potential in controlling H. armigera eggs and larvae. However, for a comprehensive estimation of the bio- control abilities of C. carnea toward H, armigera, further field-based studies are needed.Understanding predator-prey interactions has a pivotal role in biological control programs. This study evaluated the functional response of three larval instars of the green lacewing, Chrysoperla carnea （Stephens）, preying upon eggs and first instar larvae of the cotton bollworm, Helicoverpa armigera Hubner. The first and second instar larvae of C. carnea exhibited typeⅡ functional responses against both prey stages. However, the third instar larvae of C. carnea showed a type II functional response to the first instar larvae of H. armigera, but a typeⅢ functional response to the eggs. For the first instar larvae of C. carnea, the attack rate on H. armigera eggs was significantly higher than that on the larvae, whereas the attack rate of the second instar C. carnea on H. armigera larvae was significantly higher than that on the eggs. For the third instar larvae of C. carnea, the attack rate on the larvae was 1.015±0.278/h, and the attack coefficient on the eggs was 0.036 ±0.005. The handling times of the third instar larvae on larvae and eggs were 0.087 ± 0.009 and 0.071 ± 0.001 h, respectively. The highest predation rate was found for the third instar larvae of C. carnea on H. armigera eggs. Results of this study revealed that the larvae of C. carnea, especially the third instar, had a good predation potential in controlling H. armigera eggs and larvae. However, for a comprehensive estimation of the bio- control abilities of C. carnea toward H, armigera, further field-based studies are needed.

关 键 词：biological control Chrysoperla carnea Helicoverpa armigera predatorprey interactions 

分 类 号：S482.91[农业科学—农药学] S476.2[农业科学—植物保护]