- Title
- Hyperbenthic and pelagic predators regulate alternate key planktonic copepods in shallow temperate estuaries
- Creator
- Wasserman, Ryan J, Vink, Tim J F, Kramer, Rachel, Froneman, P William
- Date
- 2014
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/68224
- Identifier
- vital:29220
- Identifier
- https://doi.org/10.1071/MF13233
- Description
- Publisher version
- Description
- Although predation has been identified as an important community driver, the role of predator diversity in structuring estuarine zooplankton has not been assessed. As such, we investigated the effects of two different zooplanktivorous fish species on the estuarine zooplankton community during a 12-day mesocosm study. Three experimental treatments were established, whereby natural zooplankton communities were subject to either (1) no predatory pressure, (2) predation by a pelagic predator (Monodactylus falciformis) or (3) predation by a hyper-benthic predator (Glossogobius callidus). The pelagic feeding M. falciformis fed largely on the numerically dominant mid-water copepod species, Paracartia longipatella. In contrast, the hyper-benthic fish had a greater predatory impact on the less numerically dominant copepod, Pseudodiaptomus hessei, which demonstrates strong diel vertical migration. Variations in prey-population regulation are ascribed to the distinct behavioural differences of the predators, and mediated by the differences in behaviour of the copepod species.
- Format
- 11 pages, pdf
- Publisher
- CSIRO Publishing
- Language
- English
- Relation
- Marine & Freshwater Research, Wasserman R. J., Vink T. J. F., Kramer R., Froneman P. W. (2014) Hyperbenthic and pelagic predators regulate alternate key planktonic copepods in shallow temperate estuaries.. Marine & Freshwater Research, 65(9), 791-801 https://doi.org/10.1071/MF13233, Marine & Freshwater Research volume 65 number 9 791 801 2014 1448-6059
- Rights
- CSIRO
- 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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Collections
Wasserman, Ryan J (Assoc Prof)
Froneman, Pierre William (Prof)
SDG 14. Life Below Water
RU South African Institute for Aquatic Biodiversity (SAIAB)
RU Department of Zoology and Entomology
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