Age-related and Individual Variation in Male Piezodorus hybneri (Heteroptera: Pentatomidae) Pheromones

Table 1

Individual variation of pheromone titer and extraction from Piezodorus hybneri males.

Male	Days of first detection	Pheromone emission (μg)			Amount extracted at 16 d (μg)
		Daily maximum	15-16 d	Sum (1–16 d)
1	5-6	0.91	0.09	2.91	12.07
2	4-5	3.20	0.58	14.54	27.49
3	4-5	0.75	0.26	4.22	10.51
4	5-6	1.81	1.51	12.41	48.81
5	5-6	0.31	0.00	0.62	0.00
6	—	0.00	—	0.00	—
7	5-6	0.09	—	0.09	—
8	4-5	0.32	—	1.03	—
9	3-4	1.03	0.29	5.68	5.18
10	3-4	3.47	0.50	18.62	27.02
Average		1.32	0.46	6.01	18.73