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首页> 外文期刊>BioControl: Journal of the International Organization for Biological Control >Evaluation of Dicyphus hesperus for biological control of sweet potato whitefly and potato psyllid on greenhouse tomato
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Evaluation of Dicyphus hesperus for biological control of sweet potato whitefly and potato psyllid on greenhouse tomato

机译：大棚番茄对地瓜中双胞胎生物防治的评价

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摘要

The potato psyllid, Bactericera cockerelli Sulcer (Hemiptera: Psyllidae), and the sweetpotato whitefly, Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), are major pests in tomato in the USA, Mexico, and Central America. Earlier research revealed that the mirid bug Dicyphus hesperus Athias-Henriot (Heteroptera: Miridae) has favorable rates of development and reproduction when reared on whitefly and psyllid and is able to provide good control of both pests on tomato in cage experiments. Consequently it could have potential as a biological control agent of these pests. Nevertheless, it has yet to be demonstrated that the addition of D. hesperus to existing biological control programmes improves management of these pests in commercial tomato greenhouses. In the present study, experiments were designed to evaluate D. hesperus as a predator of B. tabaci and B. cockerelli in tomato in large cages simulating commercial greenhouse conditions in two different cropping seasons (fall-winter and summer) in two subsequent experiments. In each season, a randomized complete block design was used with three replicates and two treatments: (1) No D. hesperus, receiving B. tabaci and B. cockerelli, and (2) D. hesperus, receiving B. tabaci and B. cockerelli as No D. hesperus plus D. hesperus. The predator established and reproduced well in the crop and also provided significant reduction of the whitefly and psyllid populations in both cropping seasons. In addition, no evidence of plant damage on either leaves or flower was observed, although a little fruit damage of presumably non-economic significance was recorded. Our results demonstrate that implementation of augmentative releases of D. hesperus would improve biologically-based management strategies in tomato and presumably help to increase adoption of such programmes in tomato in North America.
机译：马铃薯木虱，Bactericera cockerelli Sulcer（半翅目：Psyllidae）和甘薯粉虱Bemisia tabaci Gennadius（半翅目：Aleyrodidae）是美国，墨西哥和中美洲番茄的主要害虫。较早的研究表明，当在粉虱和木虱上饲养时，the虫（Dicyphus hesperus Athias-Henriot）（后翅目：Mir科）具有良好的发育和繁殖速率，并且能够在笼子实验中很好地控制番茄上的两种害虫。因此，它有可能作为这些害虫的生物防治剂。然而，尚未证明在现有的生物防治计划中添加橙皮杜鹃可以改善商业番茄温室中这些害虫的管理。在本研究中，设计了一些实验来评估桔小D. hesperus作为大型笼中番茄中的烟粉虱和烟粉虱的捕食者，在随后的两个实验中模拟两个不同种植季节（秋冬和夏季）的商业温室条件。在每个季节中，均采用随机完整区组设计，进行三重复和两种处理：（1）无扇贝的D. hesperus，接受烟粉虱和B. cockerelli，（2）扇贝的D. hesperus，接受烟粉虱和B.小公鸡没有D. hesperus加上D. hesperus。捕食者在作物中的生长和繁殖良好，并且在两个种植季节中都显着减少了粉虱和木虱种群。另外，尽管记录到少量的水果损害可能不具有经济意义，但没有观察到叶子或花朵对植物造成损害的迹象。我们的研究结果表明，实施橙皮D.的增强释放将改善番茄中基于生物学的管理策略，并可能有助于增加北美番茄中此类计划的采用。

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