Sticklebacks show consistent prey-share hierarchies within but not between patchy and sequential prey distributions
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When animals compete, hierarchies can emerge. If the outcome of competition under different conditions is dependent upon different sets of attributes, then we may expect to see hierarchies that are domain-specific, rather than domain general. We tested this idea by comparing prey share hierarchies within shoals of sticklebacks Gasterosteus aculeatus as they foraged for patchily-distributed or for drifting prey. We found that prey share was correlated across pairs of patch- and pairs of drift-foraging trials, but not between the two conditions, suggesting that separate repeatable but independent prey share hierarchies arise for each for each type of prey distribution. We discuss possible underlying mechanisms and ecological implications of this finding.
Taylor , D E F , Cownden , D & Webster , M M 2016 , ' Sticklebacks show consistent prey-share hierarchies within but not between patchy and sequential prey distributions ' Journal of Zoology , vol 300 , no. 2 , pp. 137-141 . DOI: 10.1111/jzo.12350
Journal of Zoology
© 2016, The Zoological Society of London. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at onlinelibrary.wiley.com / https://dx.doi.org/10.1111/jzo.12350
DescriptionThis work was supported by the School of Biology’s Experimental Research Project (BL4201) program, (module BL4201: Experimental Research Project) at the University of St Andrews, UK.
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