- Title
- Aspects of the ecology and biology of Gilchristella aestuarius (G & T) (Pisces: Clupeidae) in the Swartkops estuary, Port Elizabeth
- Creator
- Talbot, Marie Marcel Jean-Francois
- Subject
- Fishes -- Ecology -- South Africa -- Swartkops River Estuary
- Subject
- Swartkops River Estuary (South Africa)
- Date Issued
- 1982-12
- Date
- 1982-12
- Type
- Master's theses
- Type
- Manuscripct
- Identifier
- http://hdl.handle.net/10948/52352
- Identifier
- vital:43613
- Description
- The Department of Zoology at the University of Port Elizabeth has an ongoing programme on the Swartkops estuary with the eventual aim of drawing up the energy pathways of the system. Marais (1976) has investigated the nutritional ecology of the grunter Pommadasys cormersoni while Melville-Smith (1978) and Melville-Smith and Baird (1981) reported on the ecology of larval fish. Winter (1979) studied the ecological parameters of fish populations, but this work was not a detailed account of each population. Wooldridge (1979) studied components of the 3 zooplankton community in some detail. It became evident that there was a significant lack of understanding of the ecological relationships between plankton and piscivorous fish, which was crucial to the elucidation of the interactions and trophodynamics of the Swartkops estuarine system. Since G. aestuarius is an important link in the energy pathway from the plankton to the nekton, and in terms of numbers dominates the seine net catches made in the estuary (Winter, 1979), this study was motivated. The aim was to investigate the important biological parameters of the estuarine round herring population namely the population structure, distribution and abundance, individual growth rate from field data, the food and feeding habits, reproduction and respiration, all of which are essential for the understanding of the dynamics of a species. These parameters were later converted into energy terms and the construction of an energy budget was attempted.
- Description
- Thesis (MSc) -- Faculty of Science, 1982
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (132 pages)
- Format
- Publisher
- University of Port Elizabeth
- Publisher
- Faculty of Science
- Language
- English
- Rights
- rights holder
- Rights
- All Rights Reserved
- Rights
- Open Access
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| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Talbot, MMJF.pdf | 13 MB | Adobe Acrobat PDF | View Details Download |