Florida Entomologist (2010) 93, 363-368

From Pestinfo-Wiki
Jump to: navigation, search

Xi Teng, Fang-Hao Wan and Dong Chu (2010)
Bemisia tabaci biotype Q dominates other biotypes across China
Florida Entomologist 93 (3), 363-368
Abstract: Bemisia tabaci (Gennadius) biotype Q was first reported as an invasive species in 2005 in China. The present study is the first with this serious pest to determine the distribution and proportion with B. tabaci Q-SCAR (sequence characterized amplified region) marker, and to identify the distribution of the biotype Q through extensive survey and systematic sampling in most regions of China. We made 22 collections from 15 provinces in Sep-Oct, 2007. The results showed that B. tabaci biotype Q was found in 19 collections from Shangdong, Gansu, Shaanxi, Guangxi, Zhejiang, Guizhou, Tianjin, Shanxi, Hunan, Henan, Hubei, Jiangsu, and Hainan provinces. The proportion (%) of B. tabaci biotype Q occurrence varied from 6.4% to 95.2% in these 19 collections, and it dominated (>50%) in 10 collections. The genetic divergence analysis based on mitochondrial cytochrome oxidase I (mtCOI) gene revealed that QSCAR marker was specific to biotype Q, and the non-Q biotypes mainly consisted of biotype B. The present results revealed that the biotype Q has become dominant across the country, and suggested that the displacement of non-Q biotypes by biotype Q has occurred in many regions. Furthermore, the introduction of the biotype Q might has mainly occurred through human activities rather than natural sources.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Fang Hao Wan, Dong Chu

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Bemisia tabaci biotype MED China (south)
Bemisia tabaci biotype MED China (NE)
Bemisia tabaci biotype MED China (NW)