Table 3.

Behavioral responses of Diaprepes abbreviatus adults in a two-choice olfactometer to citrus leaves fed upon by males (MFUF; a natural source of pheromone), and the synthetic EAD-active compound, methyl (E)-3-(2-hydroxyethyl)-4-methyl-2-pentenoate. Tests were conducted in the dark; adults were allowed 15 min to respond; results were scored as no response (weevils remained at the starting point), no choice (weevils moved into the arena but failed to move into one of the two olfactometer arms), or response by moving into one of the arms. Significance is reported for the two-tailed contrast between the number of weevils that chose A or B

	No. choosing
	Sex	A	B	No choice	No response	Pr ≥ G
A: Air; B:30 μg methyl (E)-3-(2-hydroxyethyl)-4-methyl-2-pentenoate
	Male	30	34	20	69	N.S.
	Female	17	48	17	71	< 0.001
A: Air; B: MFUF
	Male	14	15	6	5	N.S.
	Female	6	20	13	13	0.009
A: Air, B: Air
	Male	12	18	6	32	N.S.
	Female	6	9	13	36	N.S.
A: Air, B: Citrus leaves
	Male	4	4	2	13	N.S.
	Female	4	3	7	7	N.S.