Captures of oriental fruit moth, grapholita molesta (Lepidoptera: Tortricidae), in traps baited with host-plant volatiles in Chile

WILSON ANGEL BARROS PARADA, Byrappa Ammagarahalli, Esteban Basoalto, Eduardo Fuentes-Contreras, César Gemeno

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Studies in Australia and China identified host-plant volatile blends from peach and pear that captured relatively high numbers of Grapholita molesta (Busck). To determine if these blends are attractants in other countries and relative to each other, the two host-plant blends, a laboratory blend identified in Switzerland, and a new “total blend” made by mixing components of all three blends, were field-tested in Chile for the first time. The same solvent type, concentrations, and dispensers as in the original studies, plus an additional concentration and solvent, were used. Only the Swiss blend at the low n-hexane concentration captured significantly more males than the solvent traps, albeit in very low numbers (1.46 ± 1.46, mean ± SEM males/trap/week). Furthermore, host-plant blends decreased male captures in sex pheromone traps, and the effect was dosedependent for the Chinese and total blends. A laboratory flight tunnel test confirmed the lack of G. molesta male response to the Australian, Chinese, and Swiss plant blends. In the flight tunnel, however, the males responded sooner and in higher numbers to mixtures of sex pheromone with host-plant blends than they did to the sex pheromone alone.

Original languageEnglish
Pages (from-to)193-204
Number of pages12
JournalApplied Entomology and Zoology
Volume53
Issue number2
DOIs
StatePublished - 1 Jan 2018

Keywords

  • Flight tunnel
  • Host-plant volatiles
  • Sex pheromone
  • Synergism
  • Traps

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