- Title
- The link between behavioural plasticity and aerobic scope phenotypes in predicting the survival of Chrysoblephus laticeps under climate variability
- Creator
- Bailey, Lauren Ashleigh
- Subject
- Chrysoblephus laticeps
- Subject
- Phenotypic plasticity
- Subject
- Fishes Climatic factors
- Subject
- Fishes Physiology
- Subject
- Fishes Behavior
- Subject
- Respirometry
- Subject
- Anthropocene
- Subject
- Thermal tolerance (Physiology)
- Date Issued
- 2023-03-29
- Date
- 2023-03-29
- Type
- Academic theses
- Type
- Doctoral theses
- Type
- text
- Identifier
- http://hdl.handle.net/10962/422606
- Identifier
- vital:71961
- Identifier
- DOI 10.21504/10962/422606
- Description
- Thermal variability in the marine environment is likely to have a considerable effect on fishes as it impacts physiological performance and vital (i.e metabolism, foraging and swimming style) and non-vital (i.e. reproductive fitness) energetic processes. When fish are subjected to thermal stress, they may primarily respond by changing their behaviour. Species that have broad phenotypic behavioural plasticity (i.e. defined as the ability to adjust behavioural activity in presiding environmental conditions in order to remain within their optimal thermal range) may have a competitive advantage. Fish behavioural plasticity may take many forms. Some species may seek out thermal refugia by changing their phenology or distribution, while others alter the timing of their seasonal and spawning migrations in response to a changing environment. Although fishes can use behavioural changes to cope with climate change impacts, there does appear to be variability in the behavioural responses within species. However, if alterations in behaviour are insufficient to ensure that the individual remains within their optimal thermal range, physiological acclimation (i.e. defined as the process in which an organism adjusts to prevailing conditions by broadening their thermal performance curve so that their performance is maximized in the new thermal environment) may be required. Therefore, there is a critical link between the behaviour and thermal physiology of fishes, particularly in a world where they are facing increasing thermal stress.
- Description
- Thesis (PhD) -- Faculty of Science, Ichthyology and Fisheries Science, 2023
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (172 pages)
- Format
- Publisher
- Rhodes University
- Publisher
- Faculty of Science, Ichthyology and Fisheries Science
- Language
- English
- Rights
- Bailey, Lauren Ashleigh
- Rights
- Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/)
- Hits: 1269
- Visitors: 1278
- Downloads: 20
Collections
RU Department of Ichthyology and Fisheries Science
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | BAILEY-PHD-TR23-89.pdf | 3 MB | Adobe Acrobat PDF | View Details Download |