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Predator switching and optimal diet: insights from a generalized predator-prey model
Thesis (MSc)--Stellenbosch University, 2021.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2019
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| _version_ | 1867614120293957632 |
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| access_status_str | Open Access |
| author | Djenabou, Karimatou |
| author2 | Hui, Cang |
| author_browse | Djenabou, Karimatou Hui, Cang |
| author_facet | Hui, Cang Djenabou, Karimatou |
| author_sort | Djenabou, Karimatou |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2021. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/105614 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:46:59.291Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/105614 Predator switching and optimal diet: insights from a generalized predator-prey model Djenabou, Karimatou Hui, Cang Landi, Pietro Stellenbosch University. Faculty of Science. Dept. of Mathematical Sciences. Division Mathematics. Biomathematics Predation (Biology) -- Mathematical models Animals -- Food -- Mathematical models Switching theory Optimal diet models UCTD Thesis (MSc)--Stellenbosch University, 2021. ENGLISH ABSTRACT: Improved realism in the description of resource-consumer interaction include the consideration of physiological constraints (e.g., consumer functional response) or behavioural mechanisms, such as resource choice maximising the energy intake or switching behaviour when resources become rare. From the former idea, optimal foraging theory (OFT) has emerged as the premise for optimal diet models (ODM). While OFT and typical ODM are based on the so-called bang-bang (zero-one) rule, i.e., a resource is always taken or ignored upon an encounter, diet models considering switching behaviour are mainly characterized by a disproportionate increase (respectively, decrease) in the number of attacks upon a resource type, when the abundance of the latter increases (respectively, decreases). Though both mechanisms have been proved to promote permanence and stability of resource-consumer dynamics, only ODM considers optimization of predator’s food intake. We propose an adaptive optimal diet model (AODM) which considers both the switching behavior (allowing for partial preference) and the global maximization of energy intake, under different levels of consumers’ specialization and a generalized Holling type II functional response. In addition, we proved under certain conditions that random foraging is more valuable than adaptive (optimal) foraging. AFRIKAANSE OPSOMMING: Geen opsomming beskikbaar Masters 2019-01-30T11:48:09Z 2019-04-17T08:04:48Z 2021-07-30T03:00:13Z 2018-12 Thesis http://hdl.handle.net/10019.1/105614 en_ZA Stellenbosch University x, 90 pages application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Biomathematics Predation (Biology) -- Mathematical models Animals -- Food -- Mathematical models Switching theory Optimal diet models UCTD Djenabou, Karimatou Predator switching and optimal diet: insights from a generalized predator-prey model |
| title | Predator switching and optimal diet: insights from a generalized predator-prey model |
| title_full | Predator switching and optimal diet: insights from a generalized predator-prey model |
| title_fullStr | Predator switching and optimal diet: insights from a generalized predator-prey model |
| title_full_unstemmed | Predator switching and optimal diet: insights from a generalized predator-prey model |
| title_short | Predator switching and optimal diet: insights from a generalized predator-prey model |
| title_sort | predator switching and optimal diet insights from a generalized predator prey model |
| topic | Biomathematics Predation (Biology) -- Mathematical models Animals -- Food -- Mathematical models Switching theory Optimal diet models UCTD |
| url | http://hdl.handle.net/10019.1/105614 |
| work_keys_str_mv | AT djenaboukarimatou predatorswitchingandoptimaldietinsightsfromageneralizedpredatorpreymodel |