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First report of Bradysia difformis (Diptera: Sciaridae) Damage to Phalaenopsis orchid in China

文献类型： 外文期刊

作者： Han, Qun Xin 1 ; Cheng, Dong Mei 1 ; Luo, Juan 1 ; Zhou, Cui Zuan 1 ; Lin, Qing Sheng 2 ; Xiang, Mei Mei 1 ;

作者机构： 1.Zhongkai Univ Agr & Engn, Dept Plant Protect, Guangzhou 510225, Guangdong, Peoples R China

2.Guangdong Acad Agr Sci, Inst Plant Protect, Guangzhou 510640, Guangdong, Peoples R China

关键词： Greenhouse;Mitochondrial COI;Molecular identification;Phylogenetic analysis

期刊名称：JOURNAL OF ASIA-PACIFIC ENTOMOLOGY （ 影响因子：1.303； 五年影响因子：1.427 ）

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收录情况： SCI

摘要： Phalaenopsis orchid is among the most valuable ornamental flowering plants in the world. Since visible damage substantially decreases its amenity, limited damage is allowed in its production. An unknown insect species (Diptera: Sciaridae) was found to cause serious damage to the seedling of the Phalaenopsis orchid in greenhouses in Guangdong, China. The insect occurred in high populations in almost all greenhouses that grow Phalaenopsis orchid and the number of sciarid adults trapped on a yellow sticky card could reach as many as 303 in 24 h. An effective management strategy on any pest requires an accurate identification. Therefore, it is urgent to identify this pest correctly to mitigate its damage to the industry. Damage to Phalaenopsis orchid and morphological characteristics of the pest was described in this study. Molecular analyses based on the 488-bp portion of the mitochondrial DNA from the cytochrome oxidase I(mt COI) region were conducted to supplement morphological characteristics in identifying this pest. Both morphological characteristics and phylogenetic tree constructed with mt COI genes identified this sciarid as Bradysia difformis Frey, 1948 (= Bradysia paupera Tuomikoski, 1960) (Diptera: Sciaridae). A literature search indicated that B. difformis has been a common pest of greenhouse and forestry nurseries in Europe and South Africa. Our study is the first record of B. difformis damaging Phalaenopsis orchid in China. (C) 2015 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Published by Elsevier B.V. All rights reserved.

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