Data from: Hybridization of an invasive shrub affects tolerance and resistance to defoliation by a biological control agent
Williams, Wyatt I., Colorado State University
Friedman, Jonathan M., Colorado State University
Gaskin, John F., Agricultural Research Service
Norton, Andrew P., Colorado State University
Published Nov 05, 2013 on Dryad.
Cite this dataset
Williams, Wyatt I.; Friedman, Jonathan M.; Gaskin, John F.; Norton, Andrew P. (2013). Data from: Hybridization of an invasive shrub affects tolerance and resistance to defoliation by a biological control agent [Dataset]. Dryad. https://doi.org/10.5061/dryad.vc62h
Evolution has contributed to the successful invasion of exotic plant species in their introduced ranges, but how evolution affects particular control strategies is still under evaluation. For instance, classical biological control, a common strategy involving the utilization of highly specific natural enemies to control exotic pests, may be negatively affected by host hybridization because of shifts in plant traits, such as root allocation or chemical constituents. We investigated introgression between two parent species of the invasive shrub tamarisk (Tamarix spp.) in the western U.S., and how differences in plant traits affect interactions with a biological control agent. Introgression varied strongly with latitude of origin and was highly correlated with plant performance. Elevated levels of T. ramosissima introgression resulted in both higher investment in roots and tolerance to defoliation and less resistance to insect attack. Because tamarisk hybridization occurs predictably on the western U.S. landscape, managers may be able to exploit this information to maximize control efforts. Genetic differentiation in plant traits in this system underpin the importance of plant hybridization and may explain why some biological control releases are more successful than others.
AFLP data for all tamarisk plants in the study
Plant performance and tolerance data for outdoor experiment
Reistance and larval performance data for bioassay experiment with plant pellets