Department of Conservation Ecology and Entomology, Faculty of AgriSciences, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa.
Exp Appl Acarol. 2011 Feb;53(2):121-37. doi: 10.1007/s10493-010-9391-7. Epub 2010 Sep 15.
The presence of Tetranychus urticae and its predators on plants in the ground cover in commercially treated vineyards in the Hex River Valley, Western Cape Province, South Africa was investigated. Six Barlinka and six Dauphine vineyards were surveyed. Leaf samples from the plants on the vineyard floor were taken at monthly intervals and microscopically examined for spider mites and their predators. The coverage of the plants was determined using a co-ordinate sampling system. A wide variety of plant species was found on the vineyard floor. Most of the spider mites found on these plants were T. urticae. The phytoseiid mites on the plants were Euseius rubicolus, Neoseiulus californicus and an undescribed Typhlodromus species. The presence of these plants made it possible for T. urticae and phytoseiid mites to occur throughout the year, with a similar pattern in their seasonal activity on the vineyard floor and the vine leaves.
对南非西开普省赫克河谷商业处理的葡萄园地面覆盖物中的荨麻叶螨及其捕食者的存在情况进行了调查。调查了六个 Barlinka 和六个 Dauphine 葡萄园。每月从葡萄园地面的植物上采集叶片样本，并在显微镜下检查螨虫及其捕食者。使用坐标抽样系统确定植物的覆盖率。在葡萄园地面上发现了各种各样的植物。在这些植物上发现的大多数螨虫都是荨麻叶螨。植物上的捕食性螨虫是智利小植绥螨、加州新小绥螨和一种未描述的 Typhlodromus 物种。这些植物的存在使得荨麻叶螨和捕食性螨虫能够全年存在，它们在葡萄园地面和葡萄叶片上的季节性活动模式相似。
