植物保护2026，Vol.52Issue(2)：264-272,9.DOI:10.16688/j.zwbh.2025171
双带盘瓢虫对夹竹桃蚜的捕食特性及猎物偏好
Predation characteristics and prey preference of ladybeetle Coelophora biplagiata on the oleander aphid Aphis nerii
摘要
Abstract
The oleander aphid,Aphis nerii,is an important pest of common landscaping plants,including milkweed(Asclepias curassavica)and oleander(Nerium indicum).Coelophora biplagiata is an important predatory natural enemy in agriculture and forestry.To clarify the predatory performance of C.biplagiata against A.nerii and its potential for biological control,laboratory studies were conducted to determine the functional response,intraspecific interference,predation capacity at different temperatures,and prey preference of C.biplagiata toward A.nerii.The results showed that the functional response of C.biplagiata to A.nerii conformed to the Holling Ⅱ model.The instantaneous attack rates of the 1st-4th instar larvae and female/male adults were 0.629,1.582,1.157,1.698,1.538 and 1.522,respectively,while the corresponding handling times were 0.115,0.069,0.020,0.010,0.008 and 0.016 days.The theoretical maximum daily predation rates were 8.696,14.493,50.000,100.000,125.000 and 62.500 individuals,respectively.Predation increased with larval instar,and female adults consumed significantly more aphids than male adults.The searching efficiency decreased with increasing prey density.Under constant A.nerii density,the predation efficiency of C.biplagiata decreased with increasing predator density,accompanied by intensified competition.At temperatures of 20,25,30,35℃ and 40℃,the predation rates of C.biplagiata female adults on A.nerii were 50.333,68.500,77.833,75.833 and 10.333 individuals,respectively.Predation increased initially and then decreased with rising temperature,and no significant difference was observed between predation rates at 30℃ and 35℃(P=0.519).Compared with A.nerii,C.biplagiata exhibited a preference for feeding on Aphis craccivora.In conclusion,C.biplagiata can prey on A.nerii,but its predation is strongly influenced by environmental temperature.关键词
双带盘瓢虫/夹竹桃蚜/捕食特性/功能反应/搜寻效应/自身密度干扰反应/猎物偏好Key words
Coelophora biplagiata/Aphis nerii/predation characteristic/functional response/searching efficiency/intraspecific interference/prey preference分类
农业科技引用本文复制引用
刘志伟,霍立志,孙龙华..双带盘瓢虫对夹竹桃蚜的捕食特性及猎物偏好[J].植物保护,2026,52(2):264-272,9.基金项目
广州市重点研发计划(202206010058) （202206010058）
广州市林业和园林局部门预算项目(穗财编[2023]1号) （穗财编[2023]1号）
