title: Insecticides promote viral outbreaks by altering herbivore competition.
abstract: While the management of biological invasions is often characterized by a series of single-specieg decisions, invasive species exist within larger food webs. These biotic interactions can alter the impact of control/eradication programs and may cause suppression efforts to inadvertently facilitate invasion spread and impact. We document the rapid replacement of the invasive Bemisia Middle East-Asia Minor I (MEAM1) cryptic biotype by the cryptic Mediterranean (MED) biotype throughout China and demonstrate that MED is more tolerant of insecticides and a better vector of tomato yellow leaf curl virus (TYLCV) than MEAMJ. While MEAM1 usually excludes MED under natural conditions, insecticide application reverses the MEAM1-MED competitive hierarchy and allows MED to exclude MEAMI. The insecticide-mediated success of MED has led to TYLCV outbreaks throughout China. Our work strongly supports the hypothesis that insecticide use in China reverses the MEAMl-MED competitive hierarchy and allows MED to displace MEAM1 in managed landscapes. By promoting the dominance of a Bemisia species that is a competent viral vector, insecticides thus increase the spread and impact of TYLCV in heterogeneous agroecosystems.
authors.forename: Huipeng
authors.initials: H
authors.lastname: Pan
authors.forename: Evan L
authors.initials: EL
authors.lastname: Preisser
authors.forename: Dong
authors.initials: D
authors.lastname: Chu
authors.forename: Shaoli
authors.initials: S
authors.lastname: Wang
authors.forename: Qingjun
authors.initials: Q
authors.lastname: Wu
authors.forename: Yves
authors.initials: Y
authors.lastname: Carriére
authors.forename: Xuguo
authors.initials: X
authors.lastname: Zhou
authors.forename: Youjun
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000818:Animals; D001681:Biological Assay; D002681:China; D017753:Ecosystem; D006430:Hemiptera / Q000187:drug effects* / Q000502:physiology; D060434:Herbivory; D007306:Insecticides / Q000494:pharmacology*; D058865:Introduced Species; D010935:Plant Diseases / Q000821:virology*; D010942:Plant Viruses / Q000502:physiology*
chemical_list: D007306:Insecticides