摘要
巴氏新小绥螨Neoseiulus barkeri(Hughes)是一种多食性捕食螨,主要捕食叶螨和蓟马等。因其捕食范围广,捕食量相对较大,且易人工繁殖,因此,被广泛应用于农业生物防治中。本文利用温室的释放-回收实验研究了巴氏新小绥螨对截形叶螨Tetranychus truncatus和西花蓟马Frankliniella occidentalis(Pergande)的搜寻能力。实验共设3个处理:(1)叶螨为害植株与清洁植株;(2)蓟马虫害植株与清洁植株;(3)蓟马、叶螨混合为害植株与清洁植株。当捕食螨释放于清洁黄瓜植株和虫(螨)害黄瓜植株交替排列的六角结构的中心时,2种害虫(螨)不论是单独危害还是混合危害,巴氏新小绥螨回收比例随着时间的延长逐渐趋于平缓。释放后1 d之内,叶螨、蓟马及混合猎物处理中回收到的捕食螨分别占释放总量的65.25%±1.61%、62.75%±1.31%和81.75%±2.14%,并且虫(螨)害植株上回收到的捕食螨数量明显比清洁植株多,叶螨、蓟马及混合猎物危害植株回收的捕食螨量分别占释放总量的53.5%±5.6%、49.5%±3.6%和74.0%±2.7%。因此,巴氏新小绥螨对这2种猎物及其混合物均有较强的搜寻能力,能够有效定位作物中有猎物的植株。同时对利用一种捕食螨生物防治温室中同时发生的2种害虫(螨)的可能性进行了讨论。
The predatory mite, Neoseiulus barkeri （Hughes）, is a generalist mainly preying on spider mites and thrips. This mite is widely used as a bio-control agent due to its wide range of prey, strong predatory ability and ease of artificial rearing. In this paper, the foraging ability of N. barkeri with regard to spider mites Tetranychus truncatus, Western flower thrips Frankliniella occldentalis （Pergande） and a combination of these prey species was investigated by a series of release- recapture experiments in a greenhouse. There were three treatments ： （ 1 ） infested plants with spider mites vs clean plants ; （2） infested plants with thrips vs clean plants; （3） infested plants with spider mites and thrips vs clean plants. When released inside a hexagon in which the six apices were occupied by cucumber plants that were alternately clean or infested with spider mites, thrips, or mixed prey, the fraction of predators on plants in each treatment stabilized with time within 1 day to levels 65.25% ~ 1.61% , 62. 75% ＋ 1.31% and 81.75% ＋ 2.14% , respectively. Moreover, significantly more predatory mites were recaptured on infested than on clean plants; 53.5% ~5.6% ,49. 5% ~3.6% and 74% ＋2. 7% of all released N. barkeri were found on the three kinds of infected plants, respectively. This suggests that N. barkeri could accurately locate infested plants, irrespective of whether they were infested with T. truncatus, F. occidentalis or both prey species. The potential for using this predator to control spider mites and thrips in greenhouses is discussed.
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2013年第1期203-209,共7页
Chinese Journal of Applied Entomology
基金
国家公益性行业(农业)科研专项项目(200903032)
关键词
巴氏新小绥螨
释放一回收实验
搜寻
截形叶螨
西花蓟马
Neoseiulus barkeri, release-recapture experiment, foraging, Tetranychus truncatus, Frankliniella occidentalis
