title: Genetic Diversity and Structure of Brazilian Populations of Diatraea saccharalis (Lepidoptera: Crambidae): Implications for Pest Management.
abstract: The sugarcane borer, Diatraea saccharalis (F.), is the main pest of sugarcane in Brazil. Genetic variability and gene flow among 13 Brazilian populations of the species were evaluated based on mitochondrial DNA sequences to estimate the exchange of genetic information within and among populations. We found high genetic structure among sampled localities (ΦST=0.50923), and pairwise genetic distances were significantly correlated to geographic distances. Demographic analysis and genealogical network of mitochondrial sequences indicate population growth and admixture of D. saccharalis populations, events likely related to the sequential expansion of the corn and sugarcane crops in Brazil. The implications of these findings for pest management are discussed.
authors.affiliation: Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo - ESALQ/USP, Av. Pádua Dias, 11. Piracicaba, SP 13418-900, Brazil. Centro de Energia Nuclear na Agricultura, Campus "Luiz de Queiroz", Universidade de São Paulo - CENA/USP, Av. Centenário, 303. Piracicaba, SP 13400-970, Brazil. klsilva@gmail.com.
authors.forename: Karina L
authors.initials: KL
authors.lastname: Silva-Brandão
authors.affiliation: Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo - ESALQ/USP, Av. Pádua Dias, 11. Piracicaba, SP 13418-900, Brazil.
authors.forename: Thiago V
authors.initials: TV
authors.lastname: Santos
authors.affiliation: Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo - ESALQ/USP, Av. Pádua Dias, 11. Piracicaba, SP 13418-900, Brazil.
authors.forename: Fernando L
authors.initials: FL
authors.lastname: Cônsoli
authors.affiliation: Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo - ESALQ/USP, Av. Pádua Dias, 11. Piracicaba, SP 13418-900, Brazil.
authors.forename: Celso
authors.initials: C
authors.lastname: Omoto
mesh_terms: D000818:Animals; D001938:Brazil; D014644:Genetic Variation; D007300:Insect Control; D009036:Moths / Q000235:genetics*; D058974:Phylogeography
keywords: corn; genetic structure; geographic variation; mitochondrial DNA; sugarcane field