Assortative mating between two sympatric closely-related specialists: inferred from molecular phylogenetic analysis and behavioral data.

ABSTRACT: Host plant shifting of phytophagous insects can lead to the formation of host associated differentiation and ultimately speciation. In some cases, host plant specificity alone acts as a nearly complete pre-mating isolating barrier among insect populations. We here test whether effective pre-mating isolation and host-independent behavioral isolation have evolved under the condition of extreme host specilization using two sympatric flea beetles with incomplete post-mating isolation under laboratory conditions. Phylogenetic analysis and coalescent simulation results showed that there is a limited interspecific gene flow, indicating effctive isolation between these species. Three types of mating tests in the absence of host plant cues showed that strong host-independent behavioral isolation ha

SUBMITTER: Xue HJ 

PROVIDER: S-EPMC4069675 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature