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Video Q&A ViewAttendees 1

Member Symposium

Advancing Insect Genomics Through the Ag100Pest and i5K Initiatives On-Demand Presentations

Genomic determinants of ecological variation in European corn borer

On-Demand
On-Demand

The European corn borer moth Ostrinia nubilalis is a model species for elucidating mechanisms underlying speciation and adaptation, and it is also a major pest of cultivated maize in North America and Eurasia. Subpopulations are characterized by different sex-pheromone communication systems, in addition to voltinism ecotypes differentially adapted to local climate conditions. However, only partial barriers to hybridization exist between sympatric subpopulations. Recent research shows that genes governing both axes of phenotypic divergence—pheromone and voltinism—are disproportionately located on the Z-chromosome. Results suggest the joint action of multiple, coincident barriers lead to levels of genomic differentiation that far exceed those of single barriers acting alone.