Behavioral Ecology and Sociobiology

, Volume 19, Issue 4, pp 267–273

Predator inspection behaviour in minnow shoals: differences between populations and individuals

  • Anne E. Magurran
Article

DOI: 10.1007/BF00300641

Cite this article as:
Magurran, A.E. Behav Ecol Sociobiol (1986) 19: 267. doi:10.1007/BF00300641

Summary

When minnows (Phoxinus phoxinus) detect a stalking pike (Esox lucius) one of their first responses is to perform ‘inspection behaviour’ during which individuals or small groups approach the predator. This paper compares the inspection behaviour of two contrasting groups of minnows: Dorset minnows which have been heavily predated by pike for many thousands of years and Gwynedd minnows which have spent an equivalent period of time in a pike free environment. Minnows sympatric with pike inspected a realistic model pike more frequently and in larger shoals. Although they commenced inspection earlier they were more timid and kept a greater distance between themselves and the predator. After an inspection they were less likely to recommence foraging than minnows from the Gwynedd population. Individual differences in inspection found within the two populations suggest that selfish behaviour was present.

Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Anne E. Magurran
    • 1
  1. 1.School of Animal BiologyUniversity College of North WalesBangorUnited Kingdom