| Title: | Disruption of Phthorimaea operculella (Lepidoptera: Gelechiidae) oviposition by the application of host plant volatiles |
| Author(s): | Anfora G; Vitagliano S; Larsson MC; Witzgall P; Tasin M; Germinara GS; De Cristofaro A; |
| Address: | "Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Trentino, Italy" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Print) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: Phthorimaea operculella is a key pest of potato. The authors characterised the P. operculella olfactory system, selected the most bioactive host plant volatiles and evaluated their potential application in pest management. The electrophysiological responses of olfactory receptor neurons (ORNs) housed in long sensilla trichodea of P. operculella to plant volatiles and the two main sex pheromone components were evaluated by the single-cell recording (SCR) technique. The four most SCR-active volatiles were tested in a laboratory oviposition bioassay and under storage warehouse conditions. RESULTS: The sensitivity of sensilla trichodea to short-chained aldehydes and alcohols and the existence of ORNs tuned to pheromones in females were characterised. Male recordings revealed at least two types of ORN, each of which typically responded to one of the two pheromone components. Hexanal, octanal, nonanal and 1-octen-3-ol significantly disrupted the egg-laying behaviour in a dose-dependent manner. Octanal reduced the P. operculella infestation rate when used under storage conditions. CONCLUSIONS: This work provides new information on the perception of plant volatiles and sex pheromones by P. operculella. Laboratory and warehouse experiments show that the use of hexanal, octanal, nonanal and 1-octen-3-ol as host recognition disruptants and/or oviposition deterrents for P. operculella control appears to be a promising strategy" |
| Keywords: | Aldehydes/toxicity Animals Arthropod Antennae Female Food Storage Italy Male Moths/*physiology Octanols/toxicity Odorants Oviposition/*physiology Pheromones/physiology Sensory Receptor Cells Solanum tuberosum/*chemistry/physiology Volatile Organic Compoun; |
| Notes: | "MedlineAnfora, Gianfranco Vitagliano, Silvia Larsson, Mattias C Witzgall, Peter Tasin, Marco Germinara, Giacinto S De Cristofaro, Antonio eng Research Support, Non-U.S. Gov't England 2013/06/25 Pest Manag Sci. 2014 Apr; 70(4):628-35. doi: 10.1002/ps.3597. Epub 2013 Aug 9" |
