GENETIC DIVERSITY AND INFERENCES ON POTENTIAL SOURCE AREAS OF ADVENTIVE FRANKLINIELLA OCCIDENTALIS (THYSANOPTERA: THRIPIDAE) IN SHANDONG, CHINA BASED ON MITOCHONDRIAL AND MICROSATELLITE MARKERS
文献类型: 外文期刊
作者: Duan, Hui-Sheng 1 ; Yu, Yi 2 ; Zhang, An-Sheng 2 ; Guo, Dong 1 ; Tao, Yu-Li 1 ; Chu, Dong 1 ;
作者机构: 1.Qingdao Agr Univ, Coll Agron & Plant Protect, Key Lab Integrated Crop Pest Management Shandong, Qingdao 266109, Peoples R China
2.Shandong Acad Agr Sci, Inst Plant Protect, Shandong Inst Plant Protect, Key Lab Plant Virol, Jinan 250100, Peoples R China
关键词: western flower thrips;genetic diversity;mtCOI;microsatellites
期刊名称:FLORIDA ENTOMOLOGIST ( 影响因子:1.425; 五年影响因子:1.595 )
ISSN: 0015-4040
年卷期: 2013 年 96 卷 3 期
页码:
收录情况: SCI
摘要: To reveal the genetic diversity and to infer potential source areas of adventive western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), in Shandong, China, we used mitochondrial and microsatellite markers to analyze the genetic diversity of 15 populations from Shandong, as well as 3 populations from -Yunnan and 2 populations from Beijing these latter 2 sites having the earliest populations to establish in China and 2 populations from California, which are part of the pest's native range in North America. Data involving the mtCOI gene and microsatellite markers showed that the Chinese populations were less diverse genetically than the native USA populations. The distribution of mtCOI haplotypes and percentage of shared alleles in this study suggested that the populations from Shandong may have arrived as a secondary incursion from Yunnan. We found that the diversity of mitochondrial alleles in some populations from Shandong had declined drastically, whereas the diversity of their nuclear alleles had remained high, i.e., the drastic loss of mitochondrial haplotype diversity in some populations was not accompanied by substantial reductions in nuclear allelic diversity. Therefore, further analyses of nuclear genetic diversity may demonstrate that it provides a better indication of the adaptability of an adventive species than mitochondrial genetic diversity. Also, the F,. data and genetic diversity analysis suggest that the substantial gene flow among the Shandong populations might have minimized the bottleneck effects.
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