| 解除生殖滞育的巴氏新小绥螨捕食能力 |
| |
| 引用本文： | 李晓萌,李玲,高超,唐庆峰. 解除生殖滞育的巴氏新小绥螨捕食能力[J]. 中国生物防治学报, 2022, 38(5): 1149-1155. DOI: 10.16409/j.cnki.2095-039x.2022.09.013 |
| |
| 作者姓名： | 李晓萌 李玲 高超 唐庆峰 |
| |
| 作者单位： | 1. 安徽农业大学植物保护学院/作物有害生物综合治理安徽省重点实验室, 合肥 230036;2. 安徽省科技厅农村与社会科技发展中心, 合肥 230091 |
| |
| 基金项目： | 国家重点研发计划(2017YFD0201008-03) |
| |
| 摘 要： | 巴氏新小绥螨Neoseiulus barkeri是极具应用潜力的捕食螨，在农业生产中，广泛应用于防治多种害螨和小型吸汁性害虫。由于活体天敌的特殊性，如何保障储运期间巴氏新小绥螨的存活率和捕食能力的稳定性，是目前捕食螨产品高效安全应用的难题之一，进行诱导生殖滞育，是延长捕食螨货架期的有效途径。本文采用选择系数和Holling圆盘方程测试方法，研究了解除生殖滞育（以下简称滞育）的巴氏新小绥螨的选择取食作用和捕食功能，结果如下：（1）普通品系、滞育解除品系、滞育品系的巴氏新小绥螨对腐食酪螨不同螨态的捕食选择性和被食比例呈现出基本一致的趋势，表现出强烈的选择性；三个品系的巴氏新小绥螨均对猎物幼螨表现出嗜食性，其选择系数从高到低为幼螨，卵，若螨，成螨；但也表现出一定的差异性，普通品系与滞育解除品系对猎物的卵和幼螨均表现为嗜食性，滞育品系的巴氏新小绥螨仅对猎物的幼螨表现为嗜食性。（2）三个品系的捕食功能曲线均符合HollingⅡ型圆盘方程；滞育解除后巴氏新小绥螨能快速恢复生长发育和捕食能力，普通品系、滞育品系、滞育解除品系的巴氏新小绥螨对猎物腐食酪螨的攻击系数a分别为0.6761、0.2731、0...
|
| 关 键 词： | 巴氏新小绥螨 生殖滞育 猎物选择性 捕食功能 |
| 收稿时间： | 2022-06-15 |
Evaluation of Predation Capacity in Post-diapause Predatory Mite,Neoseiulus barkeri |
| |
| LI Xiaomeng,LI Ling,GAO Chao,TANG Qingfeng. Evaluation of Predation Capacity in Post-diapause Predatory Mite,Neoseiulus barkeri[J]. Chinese Journal of Biological Control, 2022, 38(5): 1149-1155. DOI: 10.16409/j.cnki.2095-039x.2022.09.013 |
| |
| Authors: | LI Xiaomeng LI Ling GAO Chao TANG Qingfeng |
| |
| Affiliation: | 1. Anhui Province Key Laboratory of Integrated Pest Management on Crops/School of Plant Protection, Anhui Agricultural University, Heifei 230036, China;2. Anhui Rural and Social Science and Technology Development Center, Anhui Science and Technology Department, Hefei 230091, China |
| |
| Abstract: | The predatory mite Neosuiulus barkeri has a huge potential in agricultural production,as main biological control agent of pest mites and small sap-sucking insects.For the particularity of living organism,it is a present challenge to maintain the survival rate and predation capacity stability of predatory mites during transport/storage period.This brings much obstacle to the safe and efficacious application of N.barkeri.Inducing reproductive diapause proved to be promising for prolonging shelf-life of predatory mites.This study aims to evaluate the feeding preference and predation function of N.barkeri,which had passed through a diapause,utilizing selection coefficient and the Holling disc equation.Prey-stage preference of three N.barkeri strains,direct development strain,diapause strain and post-diapause strain,was determined with Tyrophagus putrescentiae as host.The results showed a coincidence of prey preference and predation ratio among three strains.All predators consumed more larvae than eggs,and more nymphs than adults.The three strains also had some differences:both direct development strain and post-diapause strain exhibited high preference for eggs and larvae,however the diapause strain only preferred larvae.The functional responses of three strains all fit the Holling II disc equation.Once terminated diapause,predators would rapidly recover development and predation power.Among direct development strain,diapause strain and post-diapause strain,the attacking rate (a) was respectively 0.6761,0.2731,0.6468,and the theoretical maximum predation was 12.8205,12.0482,14.4928 insects per day respectively.The post-diapause strain exhibited the highest theoretical maximum predation,yet no significant difference was found among the other two strains.The diapause strain had the longest handling time (Th,0.0830 d),followed by direct development strain (0.0780 d) and post-diapause strain (0.0690 d).The estimated value of a/Thindicated that post-diapause strain was more efficacious than the direct development strain,followed by diapause strain (9.37,8.67,3.29).Our findings suggest that diapause induction have no negative effect on the predation capacity of N. barkeri,instead it can promote their efficacy to a degree. |
| |
| Keywords: | Neosuiulus barkeri reproductive diapause prey preference predation function |
|
| 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 |
|
