Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and th...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2022
|
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40066-018-0201-5 http://hdl.handle.net/11408/4968 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1779905318902300672 |
|---|---|
| author | Machekano, Honest Mutamiswa, Reyard Nyamukondiwa, Casper |
| author_facet | Machekano, Honest Mutamiswa, Reyard Nyamukondiwa, Casper |
| author_sort | Machekano, Honest |
| collection | DSpace |
| description | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
| format | Article |
| id | ir-11408-4968 |
| institution | My University |
| language | English |
| publishDate | 2022 |
| publisher | BMC |
| record_format | dspace |
| spelling | ir-11408-49682022-07-14T13:33:18Z Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana Machekano, Honest Mutamiswa, Reyard Nyamukondiwa, Casper Tomato leaf miner Insect invasion Thermal tolerance Global change Solanaceous plants This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. Background Tuta absoluta (Meyrick), a major invasive pest of Solanaceous plants, was recently detected in Botswana. Abiotic and biotic factors, together with a suite of population demographic traits are likely key for species propensity and invasion success. First, we determined the movement of T. absoluta from its core detection centre to new invasion areas using pheromone baiting and established likely biotic dispersal drivers. Second, we measured thermal tolerance vis critical thermal limits and lower and upper lethal limits to determine how these traits shape population establishment. Results We detected T. absoluta in all 67 pristine sites across nine districts of Botswana. Within-district trap catches varied between cultivated and wild hosts but were generally not statistically significant (P > 0.001). We report three major wild host plants for T. absoluta as biotic dispersal drivers: Solanum coccineum (Jacq.), Solanum supinum (Dunal) and Solanum aculeatissimum (Jacq.). Solanum coccineum and S. supinum were omnipresent, while S. aculeatissimum distribution was sporadic. Thermal tolerance assays showed larvae were more heat tolerant, with a higher critical thermal maxima (CTmax) than adults (P < 0.001), whereas the adults were more tolerant to cold with a significantly lower (P < 0.001) critical thermal minima (CTmin) compared to larvae. The upper lethal temperatures ranged from 37–43 °C, whereas the lower lethal temperatures ranged from − 1 to − 12 °C for 0–100% mortality, respectively. In the light of prevailing environmental (habitat) temperatures (Thab), warming temperature (7.29 °C) and thermal safety margin (22.39 °C) were relatively high. Conclusion Tuta absoluta may not be under abiotic physiological or biotic constraint that could limit its geographical range extension within Botswana. The ubiquity of wild Solanaceous plants with the bridgehead of year-round intensive monocultures of Solanaceous crops within a favourable climatic framework may mean that environmental suitability aided the rapid spread of T. absoluta. 2022-07-14T13:33:18Z 2022-07-14T13:33:18Z 2018 Article Machekano, H., Mutamiswa, R. & Nyamukondiwa, C. Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana. Agric & Food Secur 7, 48 (2018). https://doi.org/10.1186/s40066-018-0201-5 2048-7010 https://doi.org/10.1186/s40066-018-0201-5 http://hdl.handle.net/11408/4968 en Agriculture and Food Security;7:48 open BMC |
| spellingShingle | Tomato leaf miner Insect invasion Thermal tolerance Global change Solanaceous plants Machekano, Honest Mutamiswa, Reyard Nyamukondiwa, Casper Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana |
| title | Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana |
| title_full | Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana |
| title_fullStr | Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana |
| title_full_unstemmed | Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana |
| title_short | Evidence of rapid spread and establishment of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in semi-arid Botswana |
| title_sort | evidence of rapid spread and establishment of tuta absoluta (meyrick) (lepidoptera: gelechiidae) in semi-arid botswana |
| topic | Tomato leaf miner Insect invasion Thermal tolerance Global change Solanaceous plants |
| url | https://doi.org/10.1186/s40066-018-0201-5 http://hdl.handle.net/11408/4968 |
| work_keys_str_mv | AT machekanohonest evidenceofrapidspreadandestablishmentoftutaabsolutameyricklepidopteragelechiidaeinsemiaridbotswana AT mutamiswareyard evidenceofrapidspreadandestablishmentoftutaabsolutameyricklepidopteragelechiidaeinsemiaridbotswana AT nyamukondiwacasper evidenceofrapidspreadandestablishmentoftutaabsolutameyricklepidopteragelechiidaeinsemiaridbotswana |