The winter eggs of the phytophagous mite Panonychus ulmi (Koch) in Nova Scotia have been found to be killed by cold at the lower extremes of temperature. A more resistant form occurs in the colder areas of New Brunswick and Quebec. For short exposures the mean lethal temperature of overwintering eggs for the susceptible and resistant forms respectively is -24° F. and -35° F. [...]
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.112870 |
| Date | January 1960 |
| Creators | MacPhee, A.W. |
| Contributors | Morrison, F.O. (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 and Plant Pathology.) |
| 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. |
Page generated in 0.0021 seconds