Figure 3. Social learning in entomopathogenic nematodes.

(a) In independent trials, both nonexposed and exposed (to 1 μg/ml α-pinene for 48 hours) S. diaprepesi and H. indica IJs were assayed in separate two choice olfactometers against α-pinene. (b) In simultaneous trials, 2500 nonexposed H. indica IJs were assayed with either 100 nonexposed or 100 exposed S. diaprepesi IJs in the same two choice olfactometer. Points indicate the percent of recovered nematodes responding to α-pinene. Central diamonds and error bars denote mean percent responses and 95% confidence intervals respectively.