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Responses of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to host plant cues and sex pheromones in Africa
Thesis (PhD (Entomology))--University of Pretoria, 2023.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2023
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| _version_ | 1867613662418567168 |
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| access_status_str | Open Access |
| author2 | Weldon, Christopher W. |
| author_browse | Weldon, Christopher W. |
| author_facet | Weldon, Christopher W. |
| collection | Thesis |
| dc_rights_str_mv | © 2023 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 (Entomology))--University of Pretoria, 2023. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/92289 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:42.666Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| 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:2263/92289 Responses of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to host plant cues and sex pheromones in Africa Weldon, Christopher W. u21557242@tuks.co.za Baldwyn, Torto Amare, Birhanu Sisay UCTD Host plant preferences Pest monitoring Pheromone composition Geographical variation Inter-strain mating Natural and agricultural sciences theses SDG-02 SDG-02: Zero hunger Sustainable Development Goals (SDGs) Thesis (PhD (Entomology))--University of Pretoria, 2023. The fall armyworm, Spodoptera frugiperda, an invasive noctuid pest, has rapidly spread across continents, posing a significant threat to agriculture. This thesis delves into the intricate relationship between S. frugiperda and its host plants, as well as the role of olfaction and pheromones in shaping its behavior. The primary aim was to explore semiochemical-based methods for monitoring and controlling this pest. The study began by unraveling how olfaction guides S. frugiperda's host selection process, revealing distinct preferences based on volatile chemical profiles. These findings open doors to effective control strategies, such as intercropping, leveraging the insect's innate preferences. Early detection is pivotal in pest management, and pheromone-based monitoring plays a crucial role. However, the effectiveness of synthetic pheromones has varied across regions. This research identified specific commercial lures, trap designs, and optimal trap heights for an improved monitoring system tailored to the African context, enhancing early pest detection. Additionally, the thesis explored potential geographical and strain-specific variations between rice and corn strain populations of S. frugiperda in Africa. Analysis of female moth pheromones and male moth responses revealed slight differences in pheromone production between strains but confirmed the possibility of inter-strain mating, shedding light on reproductive dynamics. icipe Zoology and Entomology PhD (Entomology) Unrestricted 2023-09-15T07:50:04Z 2023-09-15T07:50:04Z 2023-09 2023 Thesis * A2024 http://hdl.handle.net/2263/92289 en © 2023 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 Host plant preferences Pest monitoring Pheromone composition Geographical variation Inter-strain mating Natural and agricultural sciences theses SDG-02 SDG-02: Zero hunger Sustainable Development Goals (SDGs) Responses of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to host plant cues and sex pheromones in Africa |
| title | Responses of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to host plant cues and sex pheromones in Africa |
| title_full | Responses of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to host plant cues and sex pheromones in Africa |
| title_fullStr | Responses of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to host plant cues and sex pheromones in Africa |
| title_full_unstemmed | Responses of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to host plant cues and sex pheromones in Africa |
| title_short | Responses of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to host plant cues and sex pheromones in Africa |
| title_sort | responses of the fall armyworm spodoptera frugiperda j e smith lepidoptera noctuidae to host plant cues and sex pheromones in africa |
| topic | UCTD Host plant preferences Pest monitoring Pheromone composition Geographical variation Inter-strain mating Natural and agricultural sciences theses SDG-02 SDG-02: Zero hunger Sustainable Development Goals (SDGs) |
| url | http://hdl.handle.net/2263/92289 |