Fig 1.
Male of Alpine longicorn (Rosalia alpina) sitting on the freshly cut beech (F. sylvatica) timber.
Fig 2.
Synthesis of the racemic Rosalia alpina pheromone.
Table 1.
Study sites used in field bioassays of Rosalia alpina pheromone bioassays carried out in Slovenia.
Fig 3.
Representative GC-MS chromatograms of extracts of headspace volatiles from a male (upper trace) and female Rosalia alpina (lower, red inverted trace), showing the single abundant male-specific compound.
Fig 4.
EI mass spectrum of male-specific compound from Rosalia alpina.
Fig 5.
Multistep route from compound 7 to 10 and thermal cyclization to 11.
Fig 6.
Triflation of 4 with triflic anhydride.
Fig 7.
Relative abundance of beetles captured (mean ± SE) in traps baited with synthetic pheromone (F), pheromone + host volatiles (F + HV), host volatiles alone (HV), or controls (C) for three study sites in Slovenia (pooled data).
Means significantly different: Kruskall-Wallis ANOVA H = 15.33, P < 0.01. Means with different letters are significantly different (Mann-Whitney test, Bonferroni corrected P < 0.05).
Table 2.
The number of beetles captured for different treatments within each of the individual study sites.
The mean numbers captured per 10 trap days (±SE) are shown.