Component ratios of the trail pheromone in workers of O. formosanus under various behavior contexts.

DDE indicates (3Z,6Z)-dodeca-3,6-dien-1-ol; DOE indicates (3Z)-dodec-3-en-1-ol. Numbers of workers used in each extraction are indicated by N; numbers of replicates are indicated by M. Columns marked with same letters are not significantly different (LSD multiple comparison, P>0.05). Asterisk indicates data obtained from freshly collected nests. Number that follows the ± sign is a standard devia­tion.