Pheromone Production, Attraction, and Interspecific Inhibition among Four Species of Ips Bark Beetles in the Southeastern USA
Figure 4
Percentage trap catches in a subtractive and additive field bioassay of I. avulsus-bait: (a) I. avulsus and (b) I. calligraphus. (for bait information, see Table 3). ■ females; □ males. Bars with same letter are not significantly different. ; total trap catches: I. avulsus 1673 ♀♀, 795 ♂♂; I. calligraphus 209 ♀♀, 135 ♂♂.
