Canadian Forest Service Publications

Modelling the effects of population aggregation on the efficiency of insect pest control. 1992. Barclay, H.J. Researches in Population Ecology 34: 131-141.

Year: 1992

Issued by: Pacific Forestry Centre

Catalog ID: 3148

Language: English

CFS Availability: Order paper copy (free)

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Abstract

A methodology is developed to assess the effects of spatial distribution on the efficiency of insect pest control. This methodology is especially applicable to pest control methods whose efficiency of action depends either positively or negatively on pest density. It is applied here to the sterile insect technique and pheromone trapping for male annihilation, which both depend negatively on density. This methodology relies on quantifying clumps of various size and then relating this to efficiency of control and predicting the total pest production given the information on clump sizes and efficiency of control for each clump size. It is found that control is about four times as difficult for a population that is highly clumped (k of the negative binomial distribution = 0.25) as for a regularly dispersed population.