Submitted to: Meeting Abstract
Publication Type: Review article
Publication Acceptance Date: 11/15/2004
Publication Date: 12/30/2004
Citation: Campbell, J.F. 2004. Stored-product insect management in flour mills. Review article. Outlooks on Pest Management, Dec. 2004, pp. 276-278. Interpretive Summary:
Technical Abstract: With the phase out of methyl bromide, alternative pest management tactics are needed. Development of these alternatives has been hampered by limited information on stored-product pest populations. In developing monitoring programs and evaluating treatment efficacy it is important to understand the spatial distribution and movement patterns of pest populations because these determine the proportion of the population exposed to treatment and the potential for recolonization. In this review article, data from a monitoring project in a wheat flour mill are used to illustrate how understanding these issues can impact pest management. The findings from this study suggest that pest populations have one of two general patterns. The first pattern was that source patches for the insects lay over a spatial scale greater than the mill itself and there was considerable movement of individuals across this larger spatial scale; effectively linking activity inside and outside the mill. The second observed pattern suggests source patches for the insects lay over a spatial scale contained primarily within the mill itself with pheromone traps capturing primarily insects moving among these internal patches. Although the fumigation rebound dataset gathered so far is limited it provides some preliminary information on fumigation efficacy and rate of rebound. It also provides baseline information for evaluating the efficacy of new alternative management tools and suggests which management approaches may be best for a particular species. Further research on pest population structure and dynamics at additional locations and data on the level of population suppression and rate of rebound of alternative management tactics is still needed.