Volatiles emitted by Carya illinoinensis (Wang.) K. Koch as a prelude for semiochemical investigations to focus on Acrobasis nuxvorella Nuenzig (Lepidoptera: Pyralidae)

Maria A. Corella-Madueño, Marvin K. Harris, Agustin A. Fu-Castillo, Miguel A. Martínez-Téllez, Elisa M. Valenzuela-Soto, Juan C. Gálvez-Ruiz, Irasema Vargas-Arispuro*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Background: Plant volatiles have complex intra- and interspecific effects in the environment that include plant/herbivore interactions. Identifying the quantity and quality of volatiles produced by a plant is needed to aid the process of determining which chemicals are exerting what effects and then examining whether these effects can be manipulated to benefit society. The qualitative characterization of volatile compounds emitted by pecan, Carya illinoinensis (Wang.) K. Koch, was begun in order to establish a database for investigating how these volatiles affect Acrobasis nuxvorella Nuenzig, a monophagous pest of pecan. Headspace solid-phase microextraction combined with gas chromatography-mass spectrometry was used for the analysis of the volatile constituents of pecan during three phenological stages (dormant buds, intact new shoot growth and intact nutlets) of the Western Schley and Wichita cultivars. Results: About 111 distinct compounds were identified from the two cultivars, accounting for ~99% of the headspace volatiles. The chromatographic profiles of both varieties revealed variations in the volatile composition and proportion between cultivars, with a predominance of terpene hydrocarbons, of the sesquiterpenes class, as well as monoterpenes. Conclusion: The significantly higher responsiveness recorded for the larvae of A. nuxvorella to C. illinoinensis shoots indicates that the larvae may be activated by terpenes emanating from the new shoot growth. This is the first study that has examined volatiles of pecan in Mexico.

Original languageEnglish
Pages (from-to)1522-1527
Number of pages6
JournalPest Management Science
Volume67
Issue number12
DOIs
StatePublished - Dec 2011

Keywords

  • Biorational control
  • Headspace solid-phase microextraction
  • Semiochemicals
  • Western cultivar
  • Wichita cultivar

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