title: Odorants for surveillance and control of the Asian Citrus Psyllid (Diaphorina citri).
abstract: BACKGROUND
  The Asian Citrus Psyllid (ACP), Diaphorina citri, can transmit the bacterium Candidatus Liberibacter while feeding on citrus flush shoots. This bacterium causes Huanglongbing (HLB), a major disease of citrus cultivation worldwide necessitating the development of new tools for ACP surveillance and control. The olfactory system of ACP is sensitive to variety of odorants released by citrus plants and offers an opportunity to develop new attractants and repellents.
  
  
  RESULTS
  In this study, we performed single-unit electrophysiology to identify odorants that are strong activators, inhibitors, and prolonged activators of ACP odorant receptor neurons (ORNs). We identified a suite of odorants that activated the ORNs with high specificity and sensitivity, which may be useful in eliciting behavior such as attraction. In separate experiments, we also identified odorants that evoked prolonged ORN responses and antagonistic odorants able to suppress neuronal responses to activators, both of which can be useful in lowering attraction to hosts. In field trials, we tested the electrophysiologically identified activating odorants and identified a 3-odor blend that enhances trap catches by ∼230%.
  
  
  CONCLUSIONS
  These findings provide a set of odorants that can be used to develop affordable and safe odor-based surveillance and masking strategies for this dangerous pest insect.
authors.affiliation: Department of Entomology, University of California Riverside, Riverside, California, United States of America.
authors.forename: Iliano V
authors.initials: IV
authors.lastname: Coutinho-Abreu
authors.affiliation: Department of Entomology, University of California Riverside, Riverside, California, United States of America.
authors.forename: Lisa
authors.initials: L
authors.lastname: Forster
authors.affiliation: Department of Entomology, University of California Riverside, Riverside, California, United States of America.
authors.forename: Tom
authors.initials: T
authors.lastname: Guda
authors.affiliation: Department of Entomology, University of California Riverside, Riverside, California, United States of America; Center for Disease Vector Research, University of California Riverside, Riverside, California, United States of America.
authors.forename: Anandasankar
authors.initials: A
authors.lastname: Ray
mesh_terms: D000818:Animals; D004784:Environmental Monitoring; D006430:Hemiptera; D007300:Insect Control; D009812:Odorants; D018034:Olfactory Receptor Neurons / Q000187:drug effects / Q000502:physiology