Relationship between the drift of macroinvertebrates and the activity of brown trout in a small stream

  • Giroux F
  • Ovidio M
  • Philippart J
 et al. 
  • 59

    Readers

    Mendeley users who have this article in their library.
  • 19

    Citations

    Citations of this article.

Abstract

Brown trout Salmo trutta were most active in a small stream at night, dusk and dawn when drift rate was highest, but correlations between hourly drift rates and the trout's activity varied substantially between individuals, between different dates for a single individual, and between different periods of the daily cycle. On some occasions, the trout were responsive to the total drift rate, either at night or during the day, and on others to the largest drifting organisms only (terrestrial organisms, adults of Ephemeroptera, Diptera and Trichoptera). The study supports the idea that trout adapt their activity pattern to the abundance of drifting prey, either as generalists towards any organism, or as specialists towards the largest ones. (C) 2000 The Fisheries Society of the British Isles.

Author-supplied keywords

  • Drift
  • Foraging
  • Macroinvertebrate
  • Salmo trutta
  • Salmonids
  • Stream
  • Telemetry

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • F. Giroux

  • M. Ovidio

  • J. C. Philippart

  • E. Baras

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free