Palevsky E, Soroker V, Weintraub P, Mansour F, Abo-Moch F, Gerson U
Institute of Plant Protection, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel.
Exp Appl Acarol. 2001;25(3):217-24. doi: 10.1023/a:1010645315630.
Broad mite, Polyphagotarsonemus latus (Acari: Tarsonemidae), is a serious plant pest in tropical and subtropical regions. Phoretic associations between broad mite and two genera of whiteflies (Insecta: Homoptera: Aleyrodidae). namely Bemisia and Trialeurodes, have been reported from different parts of the world. Our purpose was to determine the specificity of the association between the mite and its phoretic hosts. Two host plants, potatoes and cucumbers, were used to study these relationships in the laboratory. Insects frozen for 24 h were used as potential phoretic hosts in all experiments. Attachment levels were monitored by counting the number of mites attached to each insect. All tests were conducted for 4-6 h. as attachment to Bemisia tabaci on potato shoots leveled off after 4 h, increasing only marginally after 8 h. Attachment levels to thrips (the western flower thrips, Frankliniella occidentalis) and to allate aphids (Myzus persicae) was negligible relative to the attachment to B. tabaci. Broad mite also attached to the whiteflies Dialeurodes citri, Aleyrodes singularis and Trialeurodes lauri, the latter being the least attractive species (including B. tabaci). Washing B. tabaci with pentane greatly reduced attachment. Using cucumbers as hosts did not substantially change the general trend, but attachment levels were lower. The phoretic relationship between broad mite and its insect hosts appears to be specific to whiteflies, with some whiteflies having a higher potential as phoretic hosts.
侧多食跗线螨（Polyphagotarsonemus latus）（蜱螨亚纲：跗线螨科）是热带和亚热带地区一种严重的植物害虫。在世界不同地区均有报道侧多食跗线螨与粉虱的两个属（昆虫纲：同翅目：粉虱科），即烟粉虱属（Bemisia）和小粉虱属（Trialeurodes）之间存在携播关系。我们的目的是确定该螨与其携播宿主之间关系的特异性。在实验室中使用两种寄主植物，马铃薯和黄瓜来研究这些关系。在所有实验中，将冷冻24小时的昆虫用作潜在的携播宿主。通过计算附着在每只昆虫上的螨的数量来监测附着水平。所有测试均进行4 - 6小时，因为在4小时后附着在马铃薯嫩枝上的烟粉虱上的螨数量趋于稳定，8小时后仅略有增加。相对于附着在烟粉虱上的螨数量，附着在蓟马（西花蓟马，Frankliniella occidentalis）和桃蚜（Myzus persicae）上的螨数量可忽略不计。侧多食跗线螨也附着在柑橘粉虱（Dialeurodes citri）、奇异粉虱（Aleyrodes singularis）和月桂小粉虱（Trialeurodes lauri）上，后者是最不具吸引力的物种（包括烟粉虱）。用戊烷冲洗烟粉虱可大大降低附着率。以黄瓜作为寄主并没有实质性改变总体趋势，但附着水平较低。侧多食跗线螨与其昆虫宿主之间的携播关系似乎对粉虱具有特异性，一些粉虱作为携播宿主的潜力更高。
