Biology – Quantitative Biology – Populations and Evolution
Scientific paper
2009-02-10
Biology
Quantitative Biology
Populations and Evolution
Scientific paper
The hypothetical impact of conventional insecticidal spraying strategies on Tsetse fly is investigated in this work. The investigation is largely one of the effect of temperature on tsetse population dynamics and its reproductive cycle during spraying, given that cooler weather is preferred for the settling of insecticidal droplets. Conventional insecticidal spraying strategies are found to be more costly in cooler weather. This is due to the larger ratios of puparial duration versus first interlarval period implied by lower temperatures. The conventional strategy consequently requires a far greater number of spray cycles at lower temperature. Pupae, which are the immediate decendants of pre-spray-existing pupae (and not third generation, or higher, pupae), are identified as the main threat to successful control by aerial spraying. Costs and physical reasons aside, the investigation determines that there is little difference between the outcomes of the conventional insecticidal spraying strategy at different temperatures.
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