The growing use of synthetic chemicals to combat insects of economic importance to man has led to the discovery and wide recognition of changes in the nature of insect populations and of subsequent control failures. Changes which result in inadequate control when an insecticide dosage which was formerly effective is employed are termed insecticidal resistance. Major review papers (Brown 1958, Crow 1960, Metcalf 1955) all conclude that resistance is a result of natural selection taking place with such rapidity that the worker is able to observe the evolutionary processes. Smith (1941) was one of the first workers to call attention to the significance of racial segregation in applied biology.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.115209 |
| Date | January 1963 |
| Creators | Ozburn, George. W. |
| Contributors | Morrison, F. (Supervisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy. (Department of Biology.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
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