摘要
【目的】本研究旨在评估氟啶虫酰胺对异色瓢虫Harmonia axyridis 3龄幼虫捕食能力的影响。【方法】在室内采用指型管药膜法观测分析了0.146和0.292 mg/mL氟啶虫酰胺处理异色瓢虫3龄幼虫对其对棉蚜Aphis gossypii成虫的捕食能力(捕食量、瞬时攻击率、处理时间及搜寻效应)的影响。【结果】0.146和0.292 mg/mL氟啶虫酰胺处理异色瓢虫3龄幼虫后,其对棉蚜成虫的捕食功能反应符合Holling圆盘方程(Ⅱ型功能反应)。与丙酮处理的对照组相比,0.146和0.292 mg/mL氟啶虫酰胺处理对异色瓢虫3龄幼虫捕食功能反应参数和搜寻效应均产生了负面影响,且随着氟啶虫酰胺浓度的增加,对捕食和搜寻能力的影响也愈加显著。对照组及0.146和0.292 mg/mL氟啶虫酰胺处理组异色瓢虫3龄幼虫的瞬时攻击率分别为0.9260,1.4451和2.1197;日最大捕食量分别为392.62,52.63和32.15头;处理时间分别为0.0025,0.0190和0.0311 h。【结论】氟啶虫酰胺处理异色瓢虫3龄幼虫对其对棉蚜成虫的捕食功能有负面影响。因此,为了更好地保护和利用天敌,在实施异色瓢虫防控棉蚜时,应考虑减少或不使用化学药剂。
【Aim】The purpose of this study is to evaluate the effects of flonicamid on the predation ability of the 3rd instar larvae of Harmonia axyridis.【Methods】The residual film method was employed to observe and analyze the effects of exposure of the 3rd instar larvae of H.axyridis to 0.146 and 0.292 mg/mL of flonicamid on their predation ability on Aphis gossypii adults,including the predation amount,instantaneous attack rate,handling time and searching efficiency.【Results】The predatory functional responses of the 3rd instar larvae of H.axyridis treated with 0.146 and 0.292 mg/mL of flonicamid to A.gossypii adults followed the typeⅡfunctional responses,which can be described by Holling’s disc equation.Compared with the control group treated with acetone,exposure of 0.146 and 0.292 mg/mL of flonicamid had negative impacts on the predation functional response parameters and searching efficiency of the 3rd instar larvae of H.axyridis,and the effects on the predation and searching ability became more significant with the increase of the concentration of flonicamid.In the control group,and treatment groups with 0.146 and 0.292 mg/mL of flonicamid,the instantaneous attack rates of the 3rd instar larvae of H.axyridis were 0.9260,1.4451 and 2.1197,respectively,the maximum daily predation amounts were 392.62,52.63 and 32.15 individuals,respectively,and the handling time was 0.0025,0.0190 and 0.0311 h,respectively.【Conclusion】Exposure of the 3rd instar larvae of H.axyridis to flonicamid has negative impacts on their predation function on A.gossypii adults.Therefore,in order to better protect and utilize natural enemies,when implementing the prevention and control of A.gossypii using H.axyridis,consideration should be given to reducing or not using chemical pesticides.
作者
杨梦迪
王伟强
李安琪
姚永生
苏悦
YANG Meng-Di;WANG Wei-Qiang;LI An-Qi;YAO Yong-Sheng;SU Yue(Key Laboratory of Xinjiang Production and Construction Crops in Comprehensive Agricultural Pest Management in South Xinjiang,College of Agriculture,Tarim University,Aral 843300,China)
出处
《昆虫学报》
2025年第8期1088-1093,共6页
Acta Entomologica Sinica
基金
塔里木大学校长基金项目(TDZKYB202404)
南疆南疆农业有害生物综合治理兵团重点实验室开放课题(BTZB202404)。
关键词
异色瓢虫
棉蚜
氟啶虫酰胺
捕食
功能反应
搜寻效应
Harmonia axyridis
Aphis gossypii
flonicamid
predation
functional response
searching efficiency
作者简介
杨梦迪,女,2002年7月生,河南商丘人,本科生,研究方向为害虫综合治理,E-mail:1411688565@qq.com;通讯作者:苏悦,E-mail:xjsuyue@163.com。
