Neem, Azadirachta indica, products were tested for toxic, growth regulating, primary antifeedant, and secondary antifeedant effects on Dermestes maculatus, under conditions approximating those found in storage facilities. Toxic and growth regulating effects were investigated using topical application of mineral oil, neem oil, purified azadirachtin/methanol solution, and 10% neem seed kernel extract/methanol solution. All neem treatments exhibited higher mortality than the mineral oil treatment 5, 10, and 14 days after the application of the treatments; larvae treated with neem products often failed to pupate and never emerged as adults. Primary antifeedant effects of azadirachtin (1.5 g/L and 5 g/L) were investigated with an original no-choice feeding bioassay. Significant primary antifeedant effects were observed which were persistent for up to 13 weeks for adults and 17 weeks for larvae. Significant secondary antifeedant effects were also demonstrated after topical application of azadirachtin (.125 g/L, .25 g/L and .5 g/L) to the larvae.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.21579 |
| Date | January 1999 |
| Creators | Keeler, Cory M. |
| Contributors | Hsiung, C. C. (advisor) |
| 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 | Master of Science (Department of Natural Resource Sciences.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001658013, proquestno: MQ50803, Theses scanned by UMI/ProQuest. |
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