title: Low polymorphism  revealed in new microsatellite markers for Bemisia tabaci (Hemiptera:  Aleyrodidae).
abstract: The  silverleaf whitefly (Bemisia tabaci) is actually a complex of  morphologically indistinct species that vary in their capacity to transmit  plant viruses and to induce physiological disorders in plants of economic  importance. The worldwide impact of this whitefly has increased greatly, as it  is a vector of various types of phytovirus, especially geminiviruses, in plants  of economic importance. The adaptability of B. tabaci to many regions of  the world has fostered the appearance of various biotypes that attack a broad  spectrum of host plants. We developed microsatellite markers to study genetic  variability and population structure of this whitefly in Brazil. Thirteen  polymorphic microsatellite markers were isolated and characterized in 20  individuals from a natural population that were collected in soybean in  Campinas (SP). The number of alleles per locus ranged from one to two, and the  expected heterozygosity ranged from 0.000 to 0.505. These microsatellite markers  will be useful for studies and management of B. tabaci. The low  polymorphism found in these molecular markers is probably associated with  homology of genes expressed in these markers.
authors.affiliation: Seção de Entomologia, Centro de Fitossanidade, Instituto Agronômico de Campinas, Campinas, SP, Brasil.
authors.forename: G E
authors.initials: GE
authors.lastname: Valle
authors.forename: A L
authors.initials: AL
authors.lastname: Lourenção
authors.forename: M I
authors.initials: MI
authors.lastname: Zucchi
authors.forename: J B
authors.initials: JB
authors.lastname: Pinheiro
mesh_terms: D000818:Animals; D056426:Genetic Loci / Q000235:genetics; D006430:Hemiptera / Q000235:genetics*; D018895:Microsatellite Repeats / Q000235:genetics*; D008969:Molecular Sequence Data; D011110:Polymorphism, Genetic