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Biology of western flower thrips (Frankliniella occidentalis) on English cucumbers and roses
Thesis (MScAgric) -- University of Stellenbosch, 1993.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867613948089466881 |
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| access_status_str | Open Access |
| author | Gaum, Wilma Gwendolene |
| author2 | Giliomee, J. H. |
| author_browse | Gaum, Wilma Gwendolene Giliomee, J. H. |
| author_facet | Giliomee, J. H. Gaum, Wilma Gwendolene |
| author_sort | Gaum, Wilma Gwendolene |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MScAgric) -- University of Stellenbosch, 1993. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/57878 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:44:15.221Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/57878 Biology of western flower thrips (Frankliniella occidentalis) on English cucumbers and roses Gaum, Wilma Gwendolene Giliomee, J. H. Stellenbosch University. Faculty of AgriSciences. Dept. of Conservation Ecology and Entomology. Roses -- Diseases and pests Cucumbers -- Diseases and pests Garden pests Thrips -- Development Thrips -- Effect of temperature on Thrips -- Reproduction -- Climatic factors Dissertations -- Entomology Thesis (MScAgric) -- University of Stellenbosch, 1993. The effect of temperature on the development and reproduction of western flower thrips, Frankliniella occidentalis (Pergande), was studied at 6 different temperatures (15, 18, 20, 23, 25 and 30°C) on English cucumbers, cv. ‘Pepinex’. Life tables indicated that the intrinsic rate of natural increase (rₘ), and the net replacement rate (R₀) were highest at 30°C and lowest at 15°C. Population increase and exponential growth were achieved at all the above temperatures except at 15°C where an almost stable population existed. The generation time (T) was shortest at 30°C and increased as temperature decreased. Oviposition increased with an increase in temperature, females matured and reproduced earlier and the fecundity rate (mₓ) was higher at 30°C than at lower temperatures. Adult longevity was shortest at 30°C. The minimum threshold temperature for development was determined as 9,4°C. The physical or physiological-chemical basis of resistance in rose cultivars to western flower thrips was examined. Behavioural responses to colour, rose odours versus no odour were tested, and life history characteristics studied on seven rose cultivars at 30°C; life tables were compiled. Masters 2012-08-27T11:38:42Z 2012-08-27T11:38:42Z 1993 Thesis http://hdl.handle.net/10019.1/57878 en Stellenbosch University 103 pages : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Roses -- Diseases and pests Cucumbers -- Diseases and pests Garden pests Thrips -- Development Thrips -- Effect of temperature on Thrips -- Reproduction -- Climatic factors Dissertations -- Entomology Gaum, Wilma Gwendolene Biology of western flower thrips (Frankliniella occidentalis) on English cucumbers and roses |
| title | Biology of western flower thrips (Frankliniella occidentalis) on English cucumbers and roses |
| title_full | Biology of western flower thrips (Frankliniella occidentalis) on English cucumbers and roses |
| title_fullStr | Biology of western flower thrips (Frankliniella occidentalis) on English cucumbers and roses |
| title_full_unstemmed | Biology of western flower thrips (Frankliniella occidentalis) on English cucumbers and roses |
| title_short | Biology of western flower thrips (Frankliniella occidentalis) on English cucumbers and roses |
| title_sort | biology of western flower thrips frankliniella occidentalis on english cucumbers and roses |
| topic | Roses -- Diseases and pests Cucumbers -- Diseases and pests Garden pests Thrips -- Development Thrips -- Effect of temperature on Thrips -- Reproduction -- Climatic factors Dissertations -- Entomology |
| url | http://hdl.handle.net/10019.1/57878 |
| work_keys_str_mv | AT gaumwilmagwendolene biologyofwesternflowerthripsfrankliniellaoccidentalisonenglishcucumbersandroses |