Genetic Diversity and Structure of Brazilian Populations of Diatraea saccharalis (Lepidoptera: Crambidae): Implications for Pest Management

作者：Silva Brandao Karina L^*; Santos Thiago V; Consoli Fernando L; Omoto Celso

来源：Journal of Economic Entomology, 2015, 108(1): 307-316.

DOI：10.1093/jee/tou040

• corn
• genetic structure
• geographic variation
• mitochondrial DNA
• sugarcane field

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 (Phi(ST) = 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 Diatraea 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.

• 出版日期2015-2