Host-plant genotypic diversity and community genetic interactions mediate aphid spatial distribution (pages 121–131)
Sharon E. Zytynska, Laurent Frantz, Ben Hurst, Andrew Johnson, Richard F. Preziosi and Jennifer K. Rowntree
Article first published online: 15 DEC 2013 | DOI: 10.1002/ece3.916
In this study we used a three species aphid-plant model system (aphids, host-plant and parasitic plant) to investigate the effect of genetic diversity on genetic interactions among the community members. We showed that aphids cluster more tightly in a genetically diverse host-plant system than in a genetic monoculture. Furthermore, within the host-plant diversity levels, aphid distribution was influenced by higher-order genetic interactions among all community members. Thus, a complex genetic environment influences the distribution of herbivores among host plants, suggesting that direct and indirect genotypic interactions among species can influence community structure and processes.