Host finding by older (3^rd-instar) larvae in relation to host plant volatiles.

<p>The attraction of 3^rd-instar larvae to model (constructed of plastic and metal wire) or real seedlings of two maize inbred lines, B73-<i>lox10</i> and B73, was assessed in a paired choice-test, independently for each inbred line. In each trial, ten 3^rd-instar larvae were released in the center of a circular arena in which three each, model and real (B73 or B73-<i>lox10</i>) seedlings were positioned along the arena’s margin. After release, larvae were monitored for 5 min, and first-encounters of larvae with a seedling were recorded by observing then removing larvae immediately upon encountering a seedling. First-encounters of larvae with seedlings were unaffected by plant nature (model or real seedling, F_{1, 32} = 3.883, P = 0.058), maize inbred line (B73 or B73-<i>lox10</i>, F_{1, 32} = 0.083, P = 0.775), or any interaction between those variables (F_{1, 32} = 0.104, P = 0.749). In the plot, maize inbred line is indicated with open (B73-<i>lox10</i>) or closed (B73) circles, and seedling nature (real or model) is on the horizontal axis.