| 巴氏新小绥螨对二斑叶螨混合抗性品系和敏感品系的捕食功能 |
| |
| 引用本文： | 陈耀年,汝阳,尚素琴.巴氏新小绥螨对二斑叶螨混合抗性品系和敏感品系的捕食功能[J].中国生物防治学报,2016,32(4):428-433. |
| |
| 作者姓名： | 陈耀年 汝阳 尚素琴 |
| |
| 作者单位： | 甘肃农业大学草业学院/草业生态系统教育部重点实验室, 兰州 730070 |
| |
| 基金项目： | 甘肃省农牧厅生物技术专项(GNSW-2011-10);公益性行业(农业)科研专项(200903032) |
| |
| 摘 要： | 为明确巴氏新小绥螨对二斑叶螨混合抗性品系（R）和敏感品系（S）捕食功能的差异，在RH（75±5）%、光周期16L：8D条件下，设置16、20、24、28和32 ℃5个温度梯度，研究了巴氏新小绥螨对两个品系二斑叶螨各螨态的捕食效能。结果表明，巴氏新小绥螨对两个品系二斑叶螨各螨态的捕食功能反应均属于HollingⅡ型。16～28 ℃范围内，对二者的攻击系数、捕食能力、最大日捕食量均随温度升高而增加，处理时间则缩短。28 ℃时对雌成螨、若螨和卵捕食量最高，R品系为7.5700头、14.4928头和16.0256粒，S品系为7.9114头、18.3150头和20.1207粒；处理时间最短，R品系为0.1321、0.0690和0.0624 d，S品系为0.1264、0.0546和0.0497 d，温度达到32 ℃时，捕食量下降。在同一温度下，对S品系的捕食能力显著大于R品系（P<0.05）。说明巴氏新小绥螨对二斑叶螨混合抗性品系有一定的拒食作用，这与二斑叶螨R品系在长期药剂选择压力下体壁硬化有关。因此，田间防治二斑叶螨时要交替轮换使用化学农药，保护天敌实现生物防治和化学防治相协调的同时，避免或延缓其产生抗药性，从而更好地实现二斑叶螨的综合防控。
|
| 关 键 词： | 捕食功能 二斑叶螨 敏感品系 混合抗性品系 巴氏新小绥螨 |
| 收稿时间： | 2015-12-01 |
Predator Functional Response of Neoseiulus barkeri on Mixture Resistance Strain and Susceptible Strain of Tetranychus urticae Koch |
| |
| CHEN Yaonian;RU Yang;SHANG Suqin.Predator Functional Response of Neoseiulus barkeri on Mixture Resistance Strain and Susceptible Strain of Tetranychus urticae Koch[J].Chinese Journal of Biological Control,2016,32(4):428-433. |
| |
| Authors: | CHEN Yaonian;RU Yang;SHANG Suqin |
| |
| Institution: | Key Laboratory of Grassland Ecosystem, Ministry of Education/College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China |
| |
| Abstract: | To examine the difference in functional response of Neoseiulus barkeri to Tetranychus urticae between the mixed pesticide resistant strain and susceptible strain, the predation of N. barkeri on three stages (egg, nymph and female adult) of the two strains of T. urticae was examined at five temperatures (16, 20, 24, 28 and 32 ℃) and (75±5)% RH under the laboratory condition. The results showed that predatory functional responses were in fitted well with Holling Ⅱ equation. at 16－28 ℃, attack index (a), the a/Th value, the maximum predatory number (1/Th) increased, and the average treatment time decreased with increase in temperature, reaching the maximum at 28 ℃. The maximum predatory number of female adults, nymphs and eggs of the resistant prey was 7.6, 14.5, 16.0, respectively, and of the susceptible prey, 7.9, 18.3, 20.1, respectively. The treatment time of the three prey stages was 0.132 d, 0.069 d, and 0.062 d for the resistant strain, respectively, and 0.126 d, 0.055 d, and 0.050 d for the susceptible strain, respectively. the maximum predatory number was reduced with temperature reaching 32 ℃. And the predatory capacity of N. barkeri to the susceptible strain was significantly higher than to the mixed resistant strain at a certain temperature (P<0.05). We suggest rotation use of insecticides to protect predatory mites and to avoid or delay pesticide resistance development in T. urticae. |
| |
| Keywords: | predator function Tetranychus urticae susceptible strain mixed pesticides resistant strain Neoseiulus barkeri |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《中国生物防治学报》浏览原始摘要信息 |
| 点击此处可从《中国生物防治学报》下载免费的PDF全文 |
|
