Molecular differentiation at nuclear loci in French host races of the European corn borer (Ostrinia nubilalis).

ABSTRACT: French populations of the European corn borer consist of two sympatric and genetically differentiated host races. As such, they are well suited to study processes that could be involved in sympatric speciation, but the initial conditions of host-race divergence need to be elucidated. Gene genealogies can provide insight into the processes involved in speciation. We used DNA sequences of four nuclear genes to (1) document the genetic structure of the two French host races previously delineated with allozyme markers, (2) find genes directly or indirectly involved in reproductive isolation between host races, and (3) estimate the time since divergence of the two taxa and see whether this estimate is compatible with this divergence being the result of a host shift onto maize after its introduc

SUBMITTER: Malausa T 

PROVIDER: S-EPMC1950636 | biostudies-literature | 2007 Aug

REPOSITORIES: biostudies-literature