Abstract
The southern pine beetle, Dendroctonus frontalis Zimmermann, has three population phases. In the latent phase, southern pine beetle-initiated infestations are absent, and southern pine beetle functions as a secondary bark beetle when present. The outbreak phase results when one or more multi-tree infestations are detected per 1,000 acres of susceptible host type, and the southern pine beetle acts as an aggressive primary colonizer. The intermediate phase consists of population levels between latent and outbreak. The characteristics of these three phases have management implications, and the integrated pest management (IPM) program for the southern pine beetle should be tailored for each phase. Recommendations for each phase are provided and discussed. Prevention and restoration are primary management concerns in the latent phase, whereas suppression takes precedence during an outbreak.
Highlights
The southern pine beetle, Dendroctonus frontalis Zimmermann, (Coleoptera: Curculionidae: Scolytinae), is a chronic insect pest within pine forests in the southeastern United States
The attacking beetles release aggregation pheromones, which combine with host tree volatiles to attract other D. frontalis of both sexes (Fig. 1)
In 2007, 18 of the 30 baited control trees were killed by D. frontalis within 60 d, with only 174 infestations reported in the area, well short of the 815 spots required for outbreak status
Summary
The southern pine beetle, Dendroctonus frontalis Zimmermann, (Coleoptera: Curculionidae: Scolytinae), is a chronic insect pest within pine forests in the southeastern United States. When D. frontalis populations are low, most infestations develop in stands with high basal area, slow growth, and a large percentage of loblolly or shortleaf pine (Hain and McClelland 1979; Paine et al 1985). During several insecticide and trap tree studies, a trend in the speed and number of baited pines attacked and killed by D. frontalis during each phase has been observed in association with beetle population phases.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
