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- Title
POPULATION MODELS ON THE RELEASE OF CHEMOSTERILANTS FOR PEST CONTROL.
- Authors
Barclay, Hugh J.
- Abstract
(1) Models are presented for determining the feasibility of population control by releasing sterilants and pesticides, singly or in combination, into the environment. Only the effects on the population equilibria were determined. (2) For a single species with a simple life-cycle the release of sterilants or pesticides would reduce population size singly or in combination. (3) For a single species with a two-stage life-cycle the release of sterilants or pesticides would usually reduce numbers but their effects could be antagonistic. (4) A pest species in competition with another species would usually decrease in response to sterilant or pesticide releases unless the competitor species is numerically quite dominant and competes strongly with the pests. (5) A pest species limited mainly by predation will usually increase with sterilant or pesticide releases unless the predators are strongly crowded. (6) A pest species limited by both predation and competition is unlikely to decrease with the release of pesticides or sterilant releases if its birth rate is tower than that of the competitors or if the competitors exert little depressing effect on the pests.
- Subjects
INSECT chemosterilization; PEST control; PESTICIDES; INSECT sterilization; ECOLOGY of pests; COMPETITION (Biology)
- Publication
Journal of Applied Ecology, 1981, Vol 18, Issue 3, p679
- ISSN
0021-8901
- Publication type
Article
- DOI
10.2307/2402360