Download the full-sized PDF
Permanent link (DOI): https://doi.org/10.7939/R3RX93H49
This file is in the following communities:
|Biological Sciences, Department of|
This file is in the following collections:
|Journal Articles (Biological Sciences)|
Effect of horticultural oil on oviposition behaviour and egg survival in the obliquebanded leafroller (Lepidoptera: Tortricidae) Open Access
- Author or creator
Wins-Purdy, A. H.
Judd, G. J. R.
Evenden, M. L.
- Additional contributors
Rosaceana harris lepidoptera
- Type of item
- Journal Article (Published)
Abstract: The effects of the horticultural oil Purespray Green on oviposition behaviour and egg development in the obliquebanded leafroller, Choristoneura rosaceana (Harris), were investigated through dual-choice and no-choice bioassays and topical applications of oil to developing eggs. A residual 2% (v/v) oil spray on wax-paper and apple-leaf substrates significantly reduced both the number of eggs laid and egg survival in no-choice assays; however, this effect diminished 3 days after treatment. In dual-choice assays, females laid significantly fewer eggs on oil-treated apple leaves than on control leaves, but laid equal numbers of eggs on the oil-treated wax paper and the untreated wax-paper controls. Topical application of oil caused significant dose-dependent mortality of both newly laid eggs and eggs just before batch, and these two egg stages were equally susceptible to the oil. Topical application of 2% oil caused >99% egg mortality. Our data indicate that gravid female C. rosaceana can assess and reject oil-sprayed surfaces and that the oil can kill eggs through both contact toxicity and suffocation. These characteristics suggest that highly purified horticultural oils like Purespray Green could play a role in an integrated pest management program for this important pest species.
- Date created
- License information
- © 2009 Cambridge University Press. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
- Citation for previous publication
Wins-Purdy, A. H., Whitehouse, C., Judd, G. J. R., & Evenden, M. L. (2009). Effect of horticultural oil on oviposition behaviour and egg survival in the obliquebanded leafroller (Lepidoptera: Tortricidae). The Canadian Entomologist, 141(1), 86-94.
- Link to related item
- Date Uploaded
- Date Modified
- Audit Status
- Audits have not yet been run on this file.
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 109061
Last modified: 2015:10:12 16:13:14-06:00
Original checksum: eb58634479ce2d370c51eee419b4f661
Well formed: true
File title: <May be encrypted>
File title: N08-042.vp
File author: <May be encrypted>
File author: johnsenl
Page count: 9