Fig. 1
From: Using synthetic semiochemicals to train canines to detect bark beetle–infested trees
Correct responses in relation to estimated stimuli evaporation rates. a Correct positive responses to stimuli (compounds) with estimated release rates per 15 min over 3 days of testing. No effect of time for all stimuli joined (r2 ≈ 0). b Correct negative responses to stimuli with known releases per 15 min over 3 days of testing. Weak effect of time for all stimuli joined (r2 = 0.18). Separately, MB shows the strongest effect (r2 = 0.85) followed by Vn (r2 = 0.48). Chemical data from Table 1. The responses of the two dogs are pooled here, separate data in Supplementary Table (ESM_3 from Johansson et al. 2019). Semiochemical acronyms: MB, methylbutenol; cV, 4S-cis-verbenol; Id, Ipsdienol; Vn, (−)-verbenone