Volatile profile differences and the associated Sirex noctilio activity in two host tree species in the Northeastern United States.

Journal of Chemical Ecology
Katalin BöröczkyJames H Tumlinson

Abstract

Sirex noctilio females are known to be attracted to stem sections of stressed pine trees for oviposition. The volatile profiles and attractiveness of Eastern white pine (Pinus strobus) and two chemotypes of Scots pine (P. sylvestris) were compared after stem injection with herbicide. In general, trap captures on herbicide-treated trees were higher than on controls. The high-carene chemotype of Scots pine captured the highest numbers of females, followed by the low-carene chemotype, and finally the Eastern white pine. Herbicide-treated trees of both species emitted larger quantities of volatiles than the controls. The herbicide treatment induced higher volatile emission rates in the Scots pine chemotypes than in white pine, although there was no difference between the two chemotypes. However, qualitative differences were found between the volatile profiles of the two species as well as between the two Scots pine chemotypes, which could account for the differential attractiveness of the species and chemotypes tested.

Citations

Feb 21, 2013·Journal of Insect Science·Kelley E Zylstra, Victor C Mastro
Nov 12, 2014·Annual Review of Entomology·Bernard SlippersMichael J Wingfield
Mar 24, 2017·PloS One·Laurel J HaavikJeremy D Allison
Apr 19, 2018·Bulletin of Entomological Research·S J MartinsonJ C Corley

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