Figure 1
From: Sugar responsiveness could determine foraging patterns in yellowjackets
Response levels of Vespula germanica and Vespula vulgaris workers towards sucrose solutions of increasing concentrations. Responses measurements were done on workers captured at nest entrances with liquid crop loads (≥ 1% w/w) and subjected to the Maxillae-Labium Extension Response technique. Statistical differences were observed as of concentrations ≥ 3% w/w, with a lower proportion of V. germanica individuals responding when stimulated (ns = p > 0.05, * = p ≤ 0.05).
