title: Genetic diversity and population structure in Bactrocera correcta (Diptera: Tephritidae) inferred from mtDNA cox1 and microsatellite markers.
abstract: Bactrocera correcta is one of the most destructive pests of horticultural crops in tropical and subtropical regions. Despite the economic risk, the population genetics of this pest have remained relatively unexplored. This study explores population genetic structure and contemporary gene flow in B. correcta in Chinese Yunnan Province and attempts to place observed patterns within the broader geographical context of the species' total range. Based on combined data from mtDNA cox1 sequences and 12 microsatellite loci obtained from 793 individuals located in 7 countries, overall genetic structuring was low. The expansion history of this species, including likely human-mediated dispersal, may have played a role in shaping the observed weak structure. The study suggested a close relationship between Yunnan Province and adjacent countries, with evidence for Western and/or Southern Yunnan as the invasive origin of B. correcta within Yunnan Province. The information gleaned from this analysis of gene flow and population structure has broad implications for quarantine, trade and management of this pest, especially in China where it is expanding northward. Future studies should concentrate effort on sampling South Asian populations, which would enable better inferences of the ancestral location of B. correcta and its invasion history into and throughout Asia.
authors.affiliation: College of Plant Protection, China Agricultural University, Beijing 100193, China.
authors.forename: Yu-Jia
authors.initials: YJ
authors.lastname: Qin
authors.affiliation: College of Plant Protection, China Agricultural University, Beijing 100193, China.|Office of Agriculture Regulation, Department of Agriculture, Ladyao, Chatuchak, Bangkok 10900, Thailand.
authors.forename: Nopparat
authors.initials: N
authors.lastname: Buahom
authors.affiliation: School of Earth, Environmental and Biological Sciences, Queensland University of Technology, G.P.O. Box 2434, Brisbane 4000, QLD, Australia.
authors.forename: Matthew N
authors.initials: MN
authors.lastname: Krosch
authors.affiliation: Yunnan Entry-Exit Inspection and Quarantine Bureau, Kunming 650228, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Du
authors.affiliation: Academy of State Administration of Grain, Beijing 100037, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Dipartimento di Biologia Animale, Università degli studi di Pavia, Piazza Botta, I27100 Pavia, Italy.
authors.forename: Anna R
authors.initials: AR
authors.lastname: Malacrida
authors.affiliation: Xishuangbanna Entry-Exit Inspection and Quarantine Bureau, Jinghong 666100, China.
authors.forename: Yu-Liang
authors.initials: YL
authors.lastname: Deng
authors.affiliation: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Beijing 100088, China.
authors.forename: Jia-Qi
authors.initials: JQ
authors.lastname: Liu
authors.affiliation: Yunnan Entry-Exit Inspection and Quarantine Bureau, Kunming 650228, China.
authors.forename: Xiao-Long
authors.initials: XL
authors.lastname: Jiang
authors.affiliation: College of Plant Protection, China Agricultural University, Beijing 100193, China.
authors.forename: Zhi-Hong
authors.initials: ZH
authors.lastname: Li
mesh_terms: D000818:Animals; D002681:China; D051545:Cyclooxygenase 1 / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics; D051456:Gene Flow; D014644:Genetic Variation; D005828:Genetics, Population; D018895:Microsatellite Repeats / Q000235:genetics*; D010802:Phylogeny; D033621:Tephritidae / Q000235:genetics* / Q000472:pathogenicity
chemical_list: D004272:DNA, Mitochondrial; D051545:Cyclooxygenase 1