- Title
- Partial cold treatment of citrus fruit for export risk mitigation for Thaumatotibia leucotreta (Lepidoptera: Tortricidae) as part of a systems approach
- Creator
- Moore, Sean D, Kirkman, Wayne, Albertyn, Sonnica, Love, C N, Coetzee, Julie A, Hattingh, Vaughan
- Subject
- To be catalogued
- Date
- 2016
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/423796
- Identifier
- vital:72094
- Identifier
- xlink:href="https://doi.org/10.1093/jee/tow138"
- Description
- Some of South Africa’s citrus export markets require mandatory postharvest cold treatment of citrus fruit as a phytosanitary risk mitigation treatment for Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae). An alternative to this may be partial cold treatment as one of the final steps in a systems approach to mitigate phytosanitary risk. Consequently, the efficacy of such partial cold treatments was evaluated. It was first determined that a 2C cold treatment was significantly more effective against fourth and fifth instars (the most cold-tolerant instars) than treatments at 3C and 4C for a duration of 18 d. Secondly, it was determined that 2C for 18 d and 1C for 16 d were similarly effective, but both treatments were significantly more effective than 1C for 14 d. Mean mortality of fourth and fifth instars treated with 2C for 18 d in seven replicates from four trials was 99.94%. Finally, it was determined that the inability of the majority of surviving larvae to develop to adulthood would further increase the efficacy of a 2C for 18 d treatment to 99.96%. Inclusion of reproductive nonviability of survivors increased mortality to 99.99%.
- Format
- computer, online resource, application/pdf, 1 online resource (8 pages), pdf
- Publisher
- Oxford Academic Journals
- Language
- English
- Relation
- Journal of Economic Entomology, Moore, S.D., Kirkman, W., Albertyn, S., Love, C.N., Coetzee, J.A. and Hattingh, V., 2016. Partial cold treatment of citrus fruit for export risk mitigation for Thaumatotibia leucotreta (Lepidoptera: Tortricidae) as part of a systems approach. Journal of Economic Entomology, 109(4), pp.1578-1585, Journal of Economic Entomology volume 109 number 4 p. 1578 2016 1938-291X
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Oxford Academic Journals Open Access Policy Statement (https://academic.oup.com/journals/pages/open_access)
- Rights
- Closed Access
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Collections
Coetzee, Julie A (Prof)
RU DST/NRF SARChI for Insects in Sustainable Agricultural Ecosystems
RU Department of Botany
SDG 15. Life On Land
RU Department of Zoology and Entomology
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Partial cold treatment of citrus fruit for export risk mitigation for Thaumatotibia leucotreta.pdf | 662 KB | Adobe Acrobat PDF | View Details Download |