Nicholas Adrian H, Follett Peter A
Biosecurity and Food Safety, NSW Department of Primary Industries, Central Coast Primary Industries Centre, Gosford, NSW, Australia.
USDA ARS, U.S. Pacific Basin Agricultural Research Center, Hilo Hawaii.
J Econ Entomol. 2018 May 28;111(3):1185-1189. doi: 10.1093/jee/toy073.
The western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), is an important pest of fresh horticultural produce and as such is considered a biosecurity risk in many countries from which it is absent. Information is needed on the radiation tolerance of important surface pests of quarantine importance such as F. occidentalis so that phytosanitary irradiation treatments for exported fresh commodities can be lowered to below the 400 Gy generic treatment currently approved for most insects in the United States and Australia. Lowering the dose will help minimize any product quality problems, reduce costs, and shorten treatment time. In large-scale confirmatory trials conducted in two independent laboratories in Hawaii and Australia, a dose of 250 Gy (measured doses 222-279 Gy) applied to adult F. occidentalis on green beans resulted in no reproduction in 5,050 treated individuals. At 250 Gy, the effective dose is significantly below the 400 Gy generic dose, demonstrating that irradiation at this lowered level is an effective method for the disinfestation of F. occidentalis from fresh horticultural produce.
西花蓟马Frankliniella occidentalis (Pergande)（缨翅目：蓟马科）是新鲜园艺产品的一种重要害虫，因此在许多尚未出现该害虫的国家被视为生物安全风险。需要了解诸如西花蓟马这类具有检疫重要性的重要表面害虫的辐射耐受性，以便将出口新鲜商品的植物检疫辐照处理降低到目前美国和澳大利亚大多数昆虫所批准的400戈瑞通用处理剂量以下。降低剂量将有助于最大限度减少任何产品质量问题、降低成本并缩短处理时间。在夏威夷和澳大利亚的两个独立实验室进行的大规模验证试验中，对绿豆上的西花蓟马成虫施用250戈瑞（测量剂量为222 - 279戈瑞），5050只经过处理的个体均未繁殖。在250戈瑞时，有效剂量显著低于400戈瑞的通用剂量，表明在这个较低水平进行辐照是从新鲜园艺产品中消灭西花蓟马的有效方法。
