亚致死浓度阿维菌素对荔枝叶螨种群发育的影响  

Effects of sublethal concentrations of abamectin on development of Oligonychus litchii

作　　者：徐淑[1] 贾涛[1] 陈炳旭[1] 冯日碧 

机构地区：[1]广东省农业科学院植物保护研究所/广东省植物保护新技术重点实验室,广州510640

出　　处：《农药学学报》2017年第3期388-392,共5页Chinese Journal of Pesticide Science

基　　金：广东省公益研究与能力建设专项资金(2014A020209063);国家现代农业产业技术体系建设专项(CARS-33-12);广东省现代农业产业技术体系创新团队(2016LM2149);广东省主体科研机构创新能力建设专项(广东省农作物病虫害绿色防控技术研究开发中心建设)

摘　　要：于室内条件下研究了亚致死浓度阿维菌素对荔枝叶螨种群发育的影响。采用Potter喷雾法测得阿维菌素对荔枝叶螨成螨的亚致死浓度(LC_10和LC_30),并通过生命表方法研究了阿维菌素LC_10和LC_30浓度处理荔枝叶螨对其生长和繁殖的影响。结果表明:用阿维菌素LC_10和LC_30浓度处理荔枝叶螨后,与对照相比,其F_0代产卵量分别减少79.16%和71.83%,雌成螨寿命亦均明显缩短。F_1代幼螨期、产卵前期与对照相比均无显著差异,但卵孵化期、前若螨期、后若螨期均显著延长,其中LC_30浓度处理后分别延长41.4%、39.4%和36.1%;F_1代产卵量降低、产卵期缩短,其子代雌性比提高;F_1代内禀增长率均降低,分别为0.127 3和0.075 8,而对照为0.132 3;世代平均历期缩短,种群倍增时间延长;净生殖率和周限增长率均降低。表明亚致死浓度阿维菌素对荔枝叶螨种群增长有一定的抑制作用。In order to investigate the sublethal effects of abamectin on the development of Oligonychus litchii, Potter-spraying method was employed to test the sublethal concentrations （LC10 and LC30） of abamectin to adults of O. litchii, and analyzed the effects of sublethal concentrations （LC10 and LC30） of abamectin on the growth and reproduction of O. litchii by means of lifetables in laboratory. The results showed that the fecundity of female adults treated with abamectin at concentrations of LC10 and LC30 were reduced by 79.16% and 71.83%, respectively, and their longevities were also reduced significantly. The duration of larval and preoviposition stages of F1 generation were not significantly different from that of the control. But the duration of egg, proto-nymph, deuto-nymph of F1 generation were longer than that of the control, Which of the LC30 treatment samples were increased by 41.4%,39.4%, 36.1%, respectively. In addition, both the fecundity and egg laying period of female adults decreased, and the sex ratio of progeny of O. litchii was improved. After treated by sublethal concentrations （LC10 and LC30） of abamectin, the intrinsic rates of increase were decreased from 0.132 3 to 0.127 3 and then to 0.0758. The mean generation time was shorter than that of the control and the population doubling time was longer than that of the control. The net reproductive rate and finite rate increase were both decreased compared to the control. These results indicated that abamectin at sublethal concentrations had a negative effect on the population development of O. litchii.

关 键 词：阿维菌素 亚致死效应 荔枝叶螨 种群参数 

分 类 号：S481.4[农业科学—农药学]