title: Analysis of Genetic Variation in Brevipalpus yothersi (Acari: Tenuipalpidae) Populations from Four Species of Citrus Host Plants.
abstract: We studied species diversity and genetic variation among populations of Brevipalpus mites from four species of citrus host plants. We sampled mites on orange, lime, grapefruit and mandarin trees from orchards at six localities distributed in the five most important citrus producing states in Mexico. Genetic variation among citrus host plants and localities were assessed by analysis of nucleotide sequence data from fragments of the mitochondrial cytochrome oxidase subunit I (COI). Both Brevipalpus yothersi and B. californicus were found at these sites, and B. yothersi was the most abundant species found on all citrus species and in all localities sampled. B. californicus was found mainly on orange and mandarin and only in two of the states sampled. AMOVA and haplotype network analyses revealed no correlation between B. yothersi genetic population structure and geographical origin or citrus host plant species. Considering that a previous study reported greater genetic diversity in B. yothersi populations from Brazil than we observed in Mexico, we discuss the possibility that the Mexican populations may have originated in the southern region of America.
authors.affiliation: Posgrado en Fitosanidad-Entomología y Acarología, Colegio de Postgraduados, Texcoco, Edo. de Mexico, Mexico.
authors.forename: Delfina
authors.initials: D
authors.lastname: Salinas-Vargas
authors.affiliation: Posgrado en Fitosanidad-Entomología y Acarología, Colegio de Postgraduados, Texcoco, Edo. de Mexico, Mexico.
authors.forename: Ma Teresa
authors.initials: MT
authors.lastname: Santillán-Galicia
authors.affiliation: Posgrado en Fitosanidad-Entomología y Acarología, Colegio de Postgraduados, Texcoco, Edo. de Mexico, Mexico.
authors.forename: Ariel W
authors.initials: AW
authors.lastname: Guzmán-Franco
authors.affiliation: Escuela Nacional de Estudios Superiores, ENES, Unidad Leon (UNAM), Leon, Guanajuato, Mexico.
authors.forename: Antonio
authors.initials: A
authors.lastname: Hernández-López
authors.affiliation: Posgrado en Fitosanidad-Entomología y Acarología, Colegio de Postgraduados, Texcoco, Edo. de Mexico, Mexico.
authors.forename: Laura D
authors.initials: LD
authors.lastname: Ortega-Arenas
authors.affiliation: Posgrado en Fitosanidad-Fitopatología, Colegio de Postgraduados, Texcoco, Edo. de Mexico, Mexico.
authors.forename: Gustavo
authors.initials: G
authors.lastname: Mora-Aguilera
mesh_terms: D000818:Animals; D001938:Brazil; D002957:Citrus / Q000145:classification / Q000469:parasitology*; D042967:Electron Transport Complex I / Q000235:genetics*; D005260:Female; D014644:Genetic Variation; D006239:Haplotypes; D008800:Mexico; D008925:Mites / Q000145:classification* / Q000201:enzymology / Q000235:genetics*; D010802:Phylogeny; D058974:Phylogeography; D017422:Sequence Analysis, DNA / Q000379:methods*; D013045:Species Specificity
chemical_list: D042967:Electron Transport Complex I