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Predator cue studies reveal strong trait-mediated effects in communities despite variation in experimental designs

dc.contributor.authorPaterson, Rachel A.en_ZA
dc.contributor.authorPritchard, Daniel W.en_ZA
dc.contributor.authorDick, Jaimie T. A.en_ZA
dc.contributor.authorAlexander, Mhairi E.en_ZA
dc.contributor.authorHatcher, Melanie J.en_ZA
dc.contributor.authorDunn, Alison M.en_ZA
dc.date.accessioned2014-07-07T12:34:37Z
dc.date.available2014-07-07T12:34:37Z
dc.date.issued2013-12
dc.identifier.citationPaterson, R. A. et al. 2013. Predator cue studies reveal strong trait-mediated effects in communities despite variation in experimental designs. Animal Behaviour, 86(6):1301-1313, doi:10.1016/j.anbehav.2013.09.036.
dc.identifier.issn0003-3472 (online)
dc.identifier.otherdoi:10.1016/j.anbehav.2013.09.036
dc.identifier.urihttp://hdl.handle.net/10019.1/95091
dc.descriptionCITATION: Paterson, R. A. et al. 2013. Predator cue studies reveal strong trait-mediated effects in communities despite variation in experimental designs. Animal Behaviour, 86(6):1301-1313, doi:10.1016/j.anbehav.2013.09.036.
dc.descriptionThe original publication is available at https://www.journals.elsevier.com/animal-behaviour
dc.description.abstractNonconsumptive or trait-mediated effects of predators on their prey often outweigh density-mediated interactions where predators consume prey. For instance, predator presence can alter prey behaviour, physiology, morphology and/or development. Despite a burgeoning literature, our ability to identify general patterns in prey behavioural responses may be influenced by the inconsistent methodologies of predator cue experiments used to assess trait-mediated effects. We therefore conducted a meta-analysis to highlight variables (e.g. water type, predator husbandry, exposure time) that may influence invertebrate prey’s behavioural responses to fish predator cues. This revealed that changes in prey activity and refuge use were remarkably consistent overall, despite wide differences in experimental methodologies. Our meta-analysis shows that invertebrates altered their behaviour to predator cues of both fish that were fed the focal invertebrate and those that were fed other prey types, which suggests that invertebrates were not responding to specific diet information in the fish cues. Invertebrates also altered their behaviour regardless of predator cue addition regimes and fish satiation levels. Cue intensity and exposure time did not have significant effects on invertebrate behaviour. We also highlight that potentially confounding factors, such as parasitism, were rarely recorded in sufficient detail to assess the magnitude of their effects. By examining the likelihood of detecting trait-mediated effects under large variations in experimental design, our study demonstrates that trait-mediated effects are likely to have pervasive and powerful influences in nature.
dc.description.sponsorshipNERC grant NE/G015201/1
dc.description.urihttps://www.sciencedirect.com/science/article/pii/S0003347213004405
dc.format.extent13 pages
dc.language.isoen
dc.publisherElsevier
dc.subjectPredatory animalsen_ZA
dc.subjectPredation (Biology)en_ZA
dc.titlePredator cue studies reveal strong trait-mediated effects in communities despite variation in experimental designsen_ZA
dc.typeArticle
dc.description.versionPublisher's version
dc.rights.holderAuthors retain copyright


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