Combining methods of insect pest control: Partitioning mortality and predicting complementarity |
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Authors: | Hugh J Barclay |
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Institution: | (1) Pacific Forestry Centre, 506 West Burnside Rd., V8Z 1M5 Victoria, B. C., Canada;(2) Department of Biology, University of Victoria, V8W 2Y2 Victoria, B. C., Canada |
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Abstract: | Summary An age-structured population model is used as a vehicle for presenting a method for the analysis of interactions between pairs
of insect pest control methods. This analysis is based on partitioning the total mortality acting on a population into its
constituent components from all known sources. Pairwise critical mortality curves are then constructed which represent the
combined mortality required for eradicating the pest population. Effort curves are then constructed from computing the mortality
resulting from a given amount of control effort. The convolution of the critical mortality curves and the effort curves then
yields the isoclines formed by the effort required of two control methods in combination to achieve eradication. This analysis
allows the prediction of either synergism or interference between the control methods and also helps explain patterns observed
in previous modelling of such combinations of pest control methods. |
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Keywords: | model insect pest control mortality parasitoid |
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