Electrophysiological and Behavioral Responses of Theocolax elegans (Westwood) (Hymenoptera: Pteromalidae) to Cereal Grain Volatiles

Table 1

Behavioral response of Theocolax elegans adults in a Y-tube olfactometer to different sources of wheat grain odors.

Odor sources	Male				Female
		Treated	χ^2	P value		Treated	χ^2	P value
Wheat grains versus control air	20 (20)	18	12.8	<0.001	20 (20)	19	16.2	<0.001
Wheat grain extract versus control hexane	21 (20)	16	7.2	0.007	21 (20)	18	12.8	<0.001

Total sample size (: number of individuals that made a choice in parentheses).
Number of individuals (of those that made a choice) that chose the treated arm first.
d.f. = 1 for all χ² reported.