Table 2.
Attraction of Whittleia retiella males to bait series 1 at four different field observations in 2017 (Obs 1–3) and 2018 (Obs 4)
| Compound | Bait composition | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Isoprop-C5DA | 10 | 30 | 30 | 10 | 30 | 100 | 10 | 30 | ||||
| (rac)-2b-C5DA | 200 | 200 | 100 | 100 | ||||||||
| (S)-2b-C5DA | 100 | 100 | 100 | |||||||||
| (R)-2b-C5DA | 100 | 100 | 100 | |||||||||
| Blank | BL | |||||||||||
| Obs 1 N = 4 | ● | ● | ● | |||||||||
| Obs 2 N = 1 | ● | ● | ● | |||||||||
| Obs 3 N = 6 | ● | ● | ● | |||||||||
| Obs 4 N = 2 | ● | ● | ||||||||||
Isoprop-C5DA = 1-methylethyl (5Z)-dec-5-enoate, 2b-C5DA = 1-methylpropyl (5Z)-dec-5-enoate. Different enaniomeric composition of 2b-C5DA (S, R or racemic) is indicated. Numbers represent μg loading of different synthetic compounds on the baits. Blank baits were loaded with n-hexane (hx) only. Black dots represent baits visited by one or more males at each observation, respectively. N = number of approaching males at each observation. At all occasions, the baits were displayed in parallel with bait series 2 (see Table 3)