title: Evidence for high dispersal ability and mito-nuclear discordance in the small brown planthopper, Laodelphax striatellus.
abstract: Understanding dispersal ability in pest species is critical for both theoretical aspects of evolutionary and population biology and from a practical standpoint, such as implementing effective forecasting systems. The small brown planthopper (SBPH), Laodelphax striatellus (Fallén), is an economically important pest, but few data exist on its dispersal ability. Here, we used mitochondrial and nuclear markers to elucidate the population genetic structure of SBPH and of the parasitic bacterium Wolbachia throughout temperate and subtropical China. Our results showed that the SBPH populations in China lack significant differences in genetic structure, suggesting extensive gene flow. Multilocus sequence typing revealed that Wolbachia infection was systematic and due to the same strain (wStri) within and across populations. However, the mtDNA haplogroups had a nonrandom distribution across the sampling localities, which correlated to latitudinal and climatic gradients. We explain this mito-nuclear discordance as a result of historical population recolonization or mitochondria adaptation to climate.
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Jing-Tao
authors.initials: JT
authors.lastname: Sun
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Man-Man
authors.initials: MM
authors.lastname: Wang
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Yan-Kai
authors.initials: YK
authors.lastname: Zhang
authors.affiliation: CIRAD, UMR CBGP, F-34398 Montpellier, France.
authors.forename: Marie-Pierre
authors.initials: MP
authors.lastname: Chapuis
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Xin-Yu
authors.initials: XY
authors.lastname: Jiang
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Gao
authors.initials: G
authors.lastname: Hu
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Xian-Ming
authors.initials: XM
authors.lastname: Yang
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Ge
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Xiao-Feng
authors.initials: XF
authors.lastname: Xue
authors.affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
authors.forename: Xiao-Yue
authors.initials: XY
authors.lastname: Hong
mesh_terms: D000818:Animals; D001499:Bayes Theorem; D004272:DNA, Mitochondrial / Q000737:chemistry / Q000378:metabolism; D003576:Electron Transport Complex IV / Q000235:genetics; D005819:Genetic Markers / Q000235:genetics*; D014644:Genetic Variation; D005838:Genotype; D006430:Hemiptera / Q000235:genetics* / Q000469:parasitology; D016015:Logistic Models; D056186:Metagenomics; D018895:Microsatellite Repeats / Q000235:genetics; D008928:Mitochondria / Q000235:genetics*; D025341:Principal Component Analysis; D017422:Sequence Analysis, DNA; D020577:Wolbachia / Q000235:genetics / Q000502:physiology
chemical_list: D004272:DNA, Mitochondrial; D005819:Genetic Markers; D003576:Electron Transport Complex IV