COLLATERAL DAMAGE: RAPID EXPOSURE-INDUCED EVOLUTION OF PESTICIDE RESISTANCE LEADS TO INCREASED SUSCEPTIBILITY TO PARASITES
Article first published online: 19 MAY 2011
© 2011 The Author(s).
Volume 65, Issue 9, pages 2681–2691, September 2011
How to Cite
Jansen, M., Stoks, R., Coors, A., van Doorslaer, W. and de Meester, L. (2011), COLLATERAL DAMAGE: RAPID EXPOSURE-INDUCED EVOLUTION OF PESTICIDE RESISTANCE LEADS TO INCREASED SUSCEPTIBILITY TO PARASITES. Evolution, 65: 2681–2691. doi: 10.1111/j.1558-5646.2011.01331.x
- Issue published online: 1 SEP 2011
- Article first published online: 19 MAY 2011
- Accepted manuscript online: 5 MAY 2011 11:40AM EST
- Received September 13, 2010, Accepted March 30, 2011
- Daphnia magna;
- exposure history;
- synergistic effect;
- Pasteuria ramosa;
- cost of evolution
Although natural populations may evolve resistance to anthropogenic stressors such as pollutants, this evolved resistance may carry costs. Using an experimental evolution approach, we exposed different Daphnia magna populations in outdoor containers to the carbamate pesticide carbaryl and control conditions, and assessed the resulting populations for both their resistance to carbaryl as well as their susceptibility to infection by the widespread bacterial microparasite Pasteuria ramosa. Our results show that carbaryl selection led to rapid evolution of carbaryl resistance with seemingly no cost when assessed in a benign environment. However, carbaryl-resistant populations were more susceptible to parasite infection than control populations. Exposure to both stressors reveals a synergistic effect on sterilization rate by P. ramosa, but this synergism did not evolve under pesticide selection. Assessing costs of rapid adaptive evolution to anthropogenic stress in a semi-natural context may be crucial to avoid too optimistic predictions for the fitness of the evolving populations.