Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/24182
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Plasticity and consistency of behavioural responses to predation risk in laboratory environments
Authors: Heynen, Martina
Borcherding, Jost
Bunnefeld, Nils
Magnhagen, Carin
Contact Email: nils.bunnefeld@stir.ac.uk
Issue Date: Nov-2016
Publisher: Wiley-Blackwell
Citation: Heynen M, Borcherding J, Bunnefeld N & Magnhagen C (2016) Plasticity and consistency of behavioural responses to predation risk in laboratory environments, Journal of Zoology, 300 (3), pp. 228-235.
Abstract: The individual animal is currently a major focus of behavioural research and an increasing number of studies raise the question of how between-individual behavioural consistency and behavioural plasticity interact. Applying the reaction norm concept on groups, our study addresses both of these aspects in one framework and within an animal's natural social environment. Risk-taking behaviour in 1-year-old perchPerca fluviatiliswas assayed in aquarium experiments before and after the fish were subjected to the presence or absence of a piscivorous predator for 3weeks. To analyse the inter-individual behavioural variation across the repeated measurements, we dissected the behavioural change across the predator treatment into individual constant and plastic components using hierarchical mixed-effects models. During the predator treatment, juvenile perch increased in boldness and decreased in vigilance, the magnitude of these behavioural changes was influenced by group composition. However, the behavioural changes were not influenced by the presence of a predator, indicating the difficulties in generating realistic long-term predation pressure in the laboratory. Individuals differed in the relative increase in boldness across the predator treatment and, thus, varied in the shape of their reaction norms. In accordance, the best linear unbiased predictors, extracted from the random effects of separate linear mixed-effects models for the data before and after the predator treatment were only weakly correlated. Hence, between-individual variation seems to change under laboratory conditions and therewith not necessarily represents the initially present ‘natural’ variation, giving important implications for the conduction and interpretation of behavioural experiments.
Type: Journal Article
URI: http://hdl.handle.net/1893/24182
DOI Link: http://dx.doi.org/10.1111/jzo.12375
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Umea University
University of Cologne
Biological and Environmental Sciences
Swedish University of Agricultural Sciences

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