Predatory interaction strengths are highly context-dependent, and in temporary aquatic ecosystems, may be affected by water volume changes. We examine the influence of water volume on Lovenula raynerae (Copepoda) functional responses towards two temporary pond prey types. Daphnia prey risk was not affected by increasing water volume, whereas for Culex prey risk was reduced. Accordingly, water volume changes through the hydroperiod may have species-specific effects on prey, with implications for population persistence under environmental change.
Bibliographical noteFunding Information:
This study was funded by the Department for the Economy, Northern Ireland . We thank Choice Maluleke and Consol Kubayi for assisting with fieldwork and experiments. We extend gratitude to Rhodes University for the provision of laboratory facilities. We acknowledge use of infrastructure and equipment provided by the South African Institute for Aquatic Biodiversity (SAIAB) Research Platform and the funding channelled through the National Research Foundation – SAIAB Institutional Support system . This study was partly funded by the National Research Foundation – South African Research Chairs Initiative of the Department of Science and Technology (Inland Fisheries and Freshwater Ecology , Grant No. 110507 ) and National Research Foundation Thuthuka Grant (No. 117700 ).
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- Functional response
- Interaction strength
- Search area
ASJC Scopus subject areas
- Aquatic Science