Potato Research Center, 850 Lincoln Road, Fredericton, New Brunswick E3B 4Z7, Canada.
J Econ Entomol. 2012 Dec;105(6):1903-8. doi: 10.1603/ec11427.
Potato virus Y (PVY) is transmitted by aphids in a nonpersistent manner and aphid species differ in their ability to transmit PVY. During host selection, aphids will land and probe on nonhost plant species and this behavior is an important component of the epidemiology of many aphid-transmitted viruses. In this study, we hypothesized that host selection behavior varies between aphid species and the host or nonhost status of the plant and this behavior will modulate their ability to acquire PVY. Three potato colonizers, Myzus persicae (Sulzer), Macrosiphum euphorbiae (Thomas), and Aphis nasturtii (Kaltenbach) and three casual visitors to potato fields, Myzus cerasi (F.), Rhopalosiphum padi (L.), and Sitobion avenae (F.) were evaluated using two acquisition assays. In one assay, the normal host selection and feeding behavior of aphid species were eliminated using an artificial diet while the other considered the normal host selection and feeding behavior of aphid species on potato plants. PVY acquisition rates of aphid species widely differed between the two assays indicating the impact of host selection and feeding behavior on PVY acquisition. This behavior varied greatly between potato colonizers and noncolonizers. We recommend that laboratory evaluations of PVY vector efficiency consider the normal host selection and feeding behavior of aphid species on potatoes.
马铃薯 Y 病毒（PVY）通过非持久性方式在蚜虫中传播，并且蚜虫物种在传播 PVY 的能力上存在差异。在宿主选择过程中，蚜虫会在非宿主植物物种上降落和探测，这种行为是许多蚜虫传播病毒的流行病学的重要组成部分。在这项研究中，我们假设宿主选择行为在蚜虫物种之间以及植物的宿主或非宿主状态之间存在差异，并且这种行为将调节它们获取 PVY 的能力。使用两种获取测定法评估了三种马铃薯殖民者，桃蚜（Sulzer），大戟长管蚜（Thomas）和野油菜蚜（Kaltenbach）以及三种马铃薯田的偶然访客，樱桃蚜（F.），麦长管蚜（L.）和燕麦蚜（F.）。在一种测定法中，使用人工饲料消除了蚜虫物种的正常宿主选择和取食行为，而另一种测定法则考虑了蚜虫物种在马铃薯植株上的正常宿主选择和取食行为。蚜虫物种的 PVY 获取率在两种测定法之间差异很大，表明宿主选择和取食行为对 PVY 获取的影响。这种行为在马铃薯殖民者和非殖民者之间有很大差异。我们建议在实验室评估 PVY 载体效率时考虑蚜虫在马铃薯上的正常宿主选择和取食行为。
