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Metabolic heat generation in larval masses of the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae), at different stocking rates
Dissertation (MSc Agric ( (Entomology))--University of Pretoria, 2025.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2025
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| _version_ | 1867613481116631041 |
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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 | Dissertation (MSc Agric ( (Entomology))--University of Pretoria, 2025. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/101094 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:36:49.885Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| 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:2263/101094 Metabolic heat generation in larval masses of the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae), at different stocking rates Weldon, Christopher W. masombukajt@gmail.com Masombuka, Thulani Jack UCTD Sustainable Development Goals (SDGs) Bioconversion Temperature Protein-rich feed Waste reduction Sustainable production Dissertation (MSc Agric ( (Entomology))--University of Pretoria, 2025. The increasing global population, expected to surpass nine billion by the mid-21st century, necessitates innovative solutions for sustainable food and feed production. Insect larvae, specifically of the black soldier fly (Hermetia illucens), offer a promising alternative through bioconversion technology, wherein insects convert organic waste into valuable products like protein-rich animal feed, human food, and by-products such as frass and chitin. This study investigates the impact of stocking rate and temperature on the heat accumulation, development and growth and performance of black soldier fly larvae fed on pre-consumer fruit and vegetable waste. Larvae were reared at four stocking rates (0.5, 1, 1.5, and 2 g diet per larva) and incubated at three temperatures (27.5°C, 30°C, and 32.5°C). Results showed that increasing stocking rate led to heat accumulation in larval aggregations, which affected larval development. While survival rates were highest at 32.5°C with 0.5 g/larva (44.95%), weight gain was greatest at 30°C. Larval length was highest at 27.5°C. Bioconversion efficiency peaked at 45% with a stocking rate of 0.5 g/larva. Waste reduction efficiency remained consistently high across treatments, demonstrating the adaptability of H. illucens larvae for bioconversion in varied conditions. This research highlights the potential of black soldier fly larvae as a sustainable method for waste management and resource conversion, supporting both food and feed production. Technology and Human Resource for Industry Programme Zoology and Entomology MSc Agric (Entomology) Unrestricted Faculty of Natural and Agricultural Sciences SDG-12: Responsible consumption and production 2025-02-20T14:34:19Z 2025-02-20T14:34:19Z 2025-04 2025-02 Dissertation * A2025 http://hdl.handle.net/2263/101094 https://repository.up.ac.za/handle/2263/51914 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 Sustainable Development Goals (SDGs) Bioconversion Temperature Protein-rich feed Waste reduction Sustainable production Metabolic heat generation in larval masses of the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae), at different stocking rates |
| title | Metabolic heat generation in larval masses of the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae), at different stocking rates |
| title_full | Metabolic heat generation in larval masses of the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae), at different stocking rates |
| title_fullStr | Metabolic heat generation in larval masses of the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae), at different stocking rates |
| title_full_unstemmed | Metabolic heat generation in larval masses of the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae), at different stocking rates |
| title_short | Metabolic heat generation in larval masses of the black soldier fly, Hermetia illucens L. (Diptera: Stratiomyidae), at different stocking rates |
| title_sort | metabolic heat generation in larval masses of the black soldier fly hermetia illucens l diptera stratiomyidae at different stocking rates |
| topic | UCTD Sustainable Development Goals (SDGs) Bioconversion Temperature Protein-rich feed Waste reduction Sustainable production |
| url | http://hdl.handle.net/2263/101094 https://repository.up.ac.za/handle/2263/51914 |