- Title
- Diet of the endemic bivalve Solen cylindraceus inferred from stable isotope analysis in the Kariega Estuary, South Africa
- Creator
- Nel, Holly A, Froneman, P William
- Date
- 2016
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/67933
- Identifier
- vital:29170
- Identifier
- https://doi.org/10.1080/13235818.2016.1175917
- Description
- Publisher version
- Description
- Sedentary filter-feeders such as the razor clam (Solen cylindraceus) are believed to indiscriminately exploit a carbon source derived from particulate organic matter (POM). POM demonstrates a high degree of spatial and temporal variability in composition, which may result in intraspecific dietary variation. This study aimed to investigate seasonal ontogenetic shifts in the feeding ecology of S. cylindraceus using dual stable isotopic (δ13C and δ15N) analyses in the oligotrophic temperate permanently open Kariega Estuary, South Africa. Mixing model results demonstrate that the different size classes of S. cylindraceus had a diet comprised mainly of POM. However, size grouping did have a significant effect on carbon and nitrogen signatures. Specifically, during winter, carbon isotopic signatures became more depleted with a decrease in size, while both winter and summer δ15N values became more nitrogen enriched with an increase in size. The observed trend in the ratios can likely be ascribed to the hydrodynamics of the system. Data from this study suggest that there may be some degree of variation among the different size cohorts, although this needs further investigation.
- Format
- 7 pages, pdf
- Publisher
- Taylor & Francis
- Language
- English
- Relation
- Molluscan Research, Nel, H.A. and Froneman, P. W. (2016) Diet of the endemic bivalve Solen cylindraceus inferred from stable isotope analysis in the Kariega Estuary, South Africa. Molluscan Research, 36 (4), 271-276.https://doi.org/10.1080/13235818.2016.1175917, Molluscan Research volume 36 number 4 271 276 2016 1448-6067
- Rights
- Taylor & Francis
- Rights
- Use of this resource is governed by the terms and conditions of the National Library of South Africa Copyright Act (http://www.nlsa.ac.za/downloads/Copyright Act.pdf)
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Froneman, Pierre William (Prof)
RU Department of Zoology and Entomology
SDG 14. Life Below Water
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