乙唑螨腈和腈吡螨酯对柑橘全爪螨的亚致死效应  

Sublethal effects of cyetpyrafen and cyenopyrafen on Panonychus citri(Acari:Tereanychidae)

作　　者：程明明 成禄艳 王莉 傅云梅 雷双 丁莉莉[1] 方云洪 魏志堂 于士将[1] 丛林[1] 冉春[1] CHENG Mingming;CHENG Luyan;WANG Li;FU Yunmei;LEI Shuang;DING Lili;FANG Yunhong;WEI Zhitang;YU Shijiang;CONG Lin;RAN Chun(Citrus Research Institute,Southwest University,Chongqing 400712,China)

机构地区：[1]西南大学柑桔研究所,重庆400712

出　　处：《果树学报》2021年第5期782-791,共10页Journal of Fruit Science

基　　金：国家重点研发计划(2018YFD0201508);重庆市技术创新与应用发展专项(cstc2019jscx-gksb0218);重庆市科技创新领军人才支持计划(cstc2018kjcxljrc0040)。

摘　　要：[目的]评价乙唑螨腈和腈吡螨酯对柑橘全爪螨[Panonychus citri(McGregor)]的亚致死效应,为田间应用提供理论依据。[方法]通过叶碟喷雾法测定乙唑螨腈和腈吡螨酯对柑橘全爪螨卵和雌成螨的毒力,选择乙唑螨腈和腈吡螨酯LC_(10)和LC_(30)处理卵和雌成螨后,记录F0、F1代各虫态发育历期、产卵量和成虫寿命。[结果]乙唑螨腈和腈吡螨酯LC_(10)和LC_(30)处理柑橘全爪螨卵和雌成螨,F0代产卵量略有降低;乙唑螨腈LC_(10)和LC_(30)处理后,F1代内禀增长率(r_(m))分别为0.1931和0.1904,高于对照0.1567,世代历期(T)和种群加倍时间(D_(t))缩短。腈吡螨酯LC_(30)处理后,F1代内禀增长率(r_(m))为0.1627,与对照接近,LC_(10)处理后r_(m)为0.1798,高于对照,平均世代历期(T)和种群加倍时间(D_(t))低于对照。[结论]乙唑螨腈和腈吡螨酯对柑橘全爪螨具有低剂量刺激效应。[Objective]Phytophagous mites of the genus Tetranychus and Panonychus are serious pests on plants worldwide.Among these,the citrus red mite,Panonychus citri(McGregor),is one of most notorious and devastating citrus pest causing a huge fruit yield loss every year.Biological control of P.citri with native predators has been successfully implemented in many orchards,but is still only used on a rather limited scale.Today,caricides are still of utmost importance in the control of P.citri and this is unlikely to change in the near future.In this study,the effects of sublethal concentrations of cyetpyrafen and cyenopyrafen on P.citri were assessed.The aim of the present study was to evaluate the effect of cyetpyrafen and cyenopyrafen on life parameters based on the concentration-response bioassay of P.citri,and provide a theoretical basis for proper application of two acaricides.[Methods]All of the experiments were conducted under laboratory conditions[(26±1)℃,14 h∶10 h(L∶D)and(75%±5%)RH].The fresh and clean citrus leaves were cut into round discs with a diameter of 25 mm and a circle of absorbent cotton strips around the edge to keep moisture,which were used to feed P.citri.Leaf disc bioassay was employed to test the toxicity of cyetpyrafen and cyenopyrafen to P.citri.The sublethal doses of cyetpyrafen and cyenopyrafen(LC_(10) and LC_(30))were selected to treat the eggs and female adults of P.citri.After eggs and female adults were exposed to LC_(10) and LC_(30) concentration,the development and fecundity of F0 and F1 generations were evaluated scientifically.[Results]The results of toxicity test showed that the LC50 of cyetpyrafen and cyenopyrafen to P.citri eggs were 11.77 mg·L-1 and 12.59 mg·L-1,the LC50 against female adults of P.citri were 1.17 mg·L-1 and 2.01 mg·L-1,respectively.It indicated that the toxicity of cyetpyrafen and cyenopyrafen to P.citri was strong and the toxicity to female adults was stronger than that to eggs.The nymphal stage of P.citri after F0 generation was significantly shortened

关 键 词：柑橘全爪螨 乙唑螨腈 腈吡螨酯 亚致死效应 生命表参数 

分 类 号：S666[农业科学—果树学]