Haddaway, NR, Vieille, D, Mortimer, RJG et al. (2 more authors) (2014) Aquatic macroinvertebrate responses to native and non-native predators. Knowledge and Management of Aquatic Ecosystems (415). 10. ISSN 1961-9502
Abstract
Non-native species can profoundly affect native ecosystems through trophic interactions with native species. Native prey may respond differently to non-native versus native predators since they lack prior experience. Here we investigate antipredator responses of two common freshwater macroinvertebrates, Gammarus pulex and Potamopyrgus jenkinsi, to olfactory cues from three predators; sympatric native fish (Gasterosteus aculeatus), sympatric native crayfish (Austropotamobius pallipes), and novel invasive crayfish (Pacifastacus leniusculus). G. pulex responded differently to fish and crayfish; showing enhanced locomotion in response to fish, but a preference for the dark over the light in response to the crayfish. P. jenkinsi showed increased vertical migration in response to all three predator cues relative to controls. These different responses to fish and crayfish are hypothesised to reflect the predators' differing predation types; benthic for crayfish and pelagic for fish. However, we found no difference in response to native versus invasive crayfish, indicating that prey naiveté is unlikely to drive the impacts of invasive crayfish. The Predator Recognition Continuum Hypothesis proposes that benefits of generalisable predator recognition outweigh costs when predators are diverse. Generalised responses of prey as observed here will be adaptive in the presence of an invader, and may reduce novel predators' potential impacts.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014, ONEMA. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Antipredator behaviour; Non-native; Invasive; Austropotamobius pallipes; Pacifastacus leniusculus; Alien; Community ecology |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 21 Apr 2015 14:41 |
Last Modified: | 21 Apr 2015 14:41 |
Published Version: | http://dx.doi.org/10.1051/kmae/2014036 |
Status: | Published |
Publisher: | EDP Sciences |
Identification Number: | 10.1051/kmae/2014036 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:84089 |