The capacity of some populations of insects to tolerate quantities of poisons which are far in excess of the quantities which are required to eliminate populations of their forebears has been called "tolerance" and "resistance". The difference between these two terms is one of degree. Low levels of resistance or tolerance in insects has been called "vigour tolerance" when it shows itself as a wide spectrum effect against a number of pressures. There exists a considerable controversy about its existence. Resistance in a noxious species poses serious economic problems in the control of that species. [...]
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.116783 |
| Date | January 1965 |
| Creators | Barker, Philip S. |
| 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 Entomology.) |
| 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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