Open-field Y-shape trail-following bioassays with workers of O. formosanus at different nutrition levels.

The sample arrangements were (3Z)-dodec-3-en-1-ol (DOE) in one branch and (3Z,6Z)-dodeca-3,6-dien-1-ol (DDE) in the base and in the other branch at the same concentration. Worker from I to III, the former was less fed than the latter. The same protocol was used as in footnote of Table 3. Arm selection was calculated in ≥Base workers (that follow trails longer than the base branch). Significance of DDE arm selection was the statistical comparison between the total number of workers selected DDE arm and the number of workers going further than the base.