黑缘红瓢虫对扁平球坚蚧的捕食作用  

Predation of Chilocorus rubidus (Coleoptera: Coccinellidae) on Parthenolecanium corni (Homoptera: Coccidae)

作　　者：张世泽[1] 李朝红[2] 赖景新[1] 陈继安[3] 

机构地区：[1]西北农林科技大学植物保护学院,陕西杨凌712100 [2]陕西省汉中职业技术学院,汉中723000 [3]陕西省勉县农业技术推广中心,勉县724200

出　　处：《西北农业学报》2006年第3期98-100,共3页Acta Agriculturae Boreali-occidentalis Sinica

摘　　要：研究了黑缘红瓢虫成虫对扁平球坚蚧若虫捕食的功能反应、干扰作用。结果表明,其功能反应属于HollingⅡ型,寻找效应与自身密度的关系可用Hassell数学模型描述。黑缘红瓢虫对扁平球坚蚧具有较强的捕食能力,日最大捕食量为51.57头。黑缘红瓢虫对猎物的寻找效应随自身密度的增大而下降;成虫存在着种内干扰,其捕食率随着自身密度的增加而降低。模拟后的各方程经χ2检验,其理论值与观察值差异不显著。The experiment results showed that the functional response of predation on Parthenolecanium corni by the Chilocorus rubidus belonged to the type of Holling Ⅱ. Relationship between amount of scales preyed by ladybirds and scales density showed a negative accelerative curve. The daily maximum number of scales preyed theoretically by the adult ladybirds was 51.57. The searching efficiency decreased with the increase of predator density. The mutual interference among individual predators and preys could described by Hassell equation. There was mutual interference among the adults of ladybug of Chilocorus rubidus ,and the predatory rate increased as its density decreased. X^2 test showed that the theoretical expectation fits the observe values.

关 键 词：黑缘红瓢虫 扁平球坚蚧 功能反应 干扰作用 捕食作用 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]