Behavioral Ecology and Sociobiology

, Volume 60, Issue 1, pp 77–86 | Cite as

Subhabitat selection by foraging threespine stickleback (Gasterosteus aculeatus): previous experience and social conformity

Original Article

Abstract

Any mechanism that allows animals to increase their foraging efficiency is likely to be selected for, including the ability to learn to recognise and subsequently discriminate between habitat types based on their profitability. In a series of laboratory studies, we manipulated prey densities across two different experimental subhabitats and demonstrated that threespine stickleback (Gasterosteus aculeatus) can develop foraging preferences for subhabitats that have previously yielded prey. Fish were not recalling the spatial location of prey patches; rather, they were discriminating between subhabitats based on foraging experience there and allocating foraging effort accordingly. Foraging preferences took around 14 days to develop, and once established, they persisted independently of experimental prey density, suggesting that fish were using experience rather than real-time sampling to select foraging grounds. When we presented focal fish with social information cues, we found that they preferentially used local enhancement and current public information cues when they conflicted with previous experience, but that they did not use prior public information. This suggests that in the presence of conspecifics, individuals prioritise social conformity over the use of private information. We discuss our results in the context of optimal foraging and the trade-offs associated with balancing conflicting private and social information.

Keywords

Optimal foraging Social conformity Public information Memory Threespine stickleback 

Notes

Acknowledgements

Work was carried out at the Department of Biology, University of Leicester, LE1 7RH, UK. We gratefully thank I. Coolen, T.J. Pitcher, A.J.W. Ward and two anonymous referees for helpful criticism of this manuscript. M.M. Webster was supported by a NERC studentship. P.J.B. Hart was supported by NERC grant NER/A/S/2001/01208. The experimental procedures detailed here comply with the current laws of the United Kingdom.

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Department of BiologyUniversity of LeicesterLeicesterUK

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