首页|Disruption of Phthorimaea operculella (Lepidoptera: Gelechiidae) oviposition by the application of host plant volatiles

Disruption of Phthorimaea operculella (Lepidoptera: Gelechiidae) oviposition by the application of host plant volatiles

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  • NSTL
  • Wiley
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-oI as host recognition disruptants and/or oviposition deterrents for P. operculella control appears to be a promising strategy.

potato tuberwormsemiochemicaissingle-cell recordingbehavioural bioassaysegg-laying disruption

Gianfranco Anfora、Silvia Vitagliano、Mattias C Larsson

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Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Trentino, Italy

Department of Agricultural, Environmental and Food Sciences, University of Molise, Campobasso, Italy

Chemical Ecology, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp, Sweden

2014

10.1002/ps.3597

Pest Management Science

Pest Management Science

SCI
ISSN：1526-498X
年,卷(期)：2014.70(4)
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