Figure 2
From: Eliciting maize defense pathways aboveground attracts belowground biocontrol agents
Adult D. speciosa responses in two-choice, Y-tube bioassays.
(a) Responses to undamaged, mechanically damaged (MD) and pest damaged (fed upon by other adult D. speciosa corn seedlings. (b) Responses to Methyl Salicylate (MeSA) treated corn seedlings. (c) Responses to Methyl Jasmonate (MeJA) treated corn seedlings. (d) Y-tube apparatus used for assays. Clean humidified air is pumped into the chambers containing treatments then subsequently into the Y-tube. Adult beetles are released in the bottom of the Y and allowed to choose between treatments. D. speciosa Time Preference index is constructed from average response times and preferences for the top treatment in a pair (i.e. for Corn in Corn vs Air); higher numbers indicate a faster response and a greater preference for the top treatment in a pair. Points and error bars denote mean D. speciosa response (n = 10) and standard error respectively. A single asterisk denotes significant differences (P < 0.05) in response as compared with a baseline of Air vs Air. Double asterisks denote significance at P < 0.01.
