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Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa
Thesis (PhD)--University of Pretoria, 2014.
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| Language: | English |
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University of Pretoria
2021
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| _version_ | 1867613524166967296 |
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| access_status_str | Open Access |
| author2 | Slippers, Bernard |
| author_browse | Slippers, Bernard |
| author_facet | Slippers, Bernard |
| collection | Thesis |
| dc_rights_str_mv | © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Thesis (PhD)--University of Pretoria, 2014. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/79225 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:30.755Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/79225 Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa Slippers, Bernard Dawit.Degefu@fabi.up.ac.za Wingfield, Michael J. Hurley, Brett P. Garnas, Jeff Degefu, Dawit Tesfaye UCTD Thesis (PhD)--University of Pretoria, 2014. Forests are complex ecosystems that provide a variety of valuable products, such as timber, fuel wood, fiber and non-wood forest products and they also contribute to socio economic development. Pest problems have a considerable influence on the health of planted and natural woodlands of this industry. Members of the family Cossidae are often of serious concern to forestry and horticulture due to their aggressive, often gregarious wood-boring behaviour. Some species of this family (e.g Coryphodema tristis and Chilecomadia valdiviana) is known to be highly polyphagous and members occupy diverse ecological zones. Coryphodema tristis and Chilecomadia valdiviana are examples of cossid species that have recently expanded their host range to include non-native species. Coryphodema tristis was first reported infesting the non-native plantation species, Eucalyptus nitens, in South Africa in 2004, and C. valdiviana was first recorded infesting the same species in Chile in 1992. These insects have been reported to cause substantial damage to E. nitens. Both species are associated with a number of native trees in their respective countries, as well as non-native fruit trees and ornamentals. Despite what appears to be extreme polyphagy in C. tristis, many trees, including many Eucalyptus species and even hybrids of E. nitens and E. grandis planted in the province of Mpumalanga, are apparently free of any cossid moth infestation. These novel host range expansions raise interesting questions regarding the factors that influence new host associations. This review examines Cossidae as pests in native and non-native forest systems. Possible factors contributing to success of Cossidae in forestry and control strategies employed to manage the group are discussed. Genetics PhD Unrestricted 2021-04-06T07:22:17Z 2021-04-06T07:22:17Z 14/02/12 2014 Thesis Degefu, DT 2014, Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa, PhD Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/79225> http://hdl.handle.net/2263/79225 en © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa |
| title | Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa |
| title_full | Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa |
| title_fullStr | Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa |
| title_full_unstemmed | Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa |
| title_short | Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa |
| title_sort | ecology and genetic diversity of coryphodema tristis on eucalyptus nitens in south africa |
| topic | UCTD |
| url | http://hdl.handle.net/2263/79225 |