Mean concentrations (ng mm-2) of detected headspace volatiles from four-day old cultures of mountain pine beetle (Dendroctonus ponderosae)-symbiotic fungi: Grosmannia clavigera, Ophiostoma montium, and Leptographium longiclavatum.

ANOVA results for among-species differences in mean concentrations for each compound. Means with different letter superscripts are significantly different as indicated by Tukey Honest Significant Difference tests. Compounds not detected in headspace collections of a given fungus are indicated with “ND.”