Individual variation in foraging movements in a lake population of young-of-the-year brook charr (Salvelinus fontinalis)

Biro, Peter A. and Ridgway, Mark S. 1995, Individual variation in foraging movements in a lake population of young-of-the-year brook charr (Salvelinus fontinalis), Behaviour, vol. 132, no. 1, pp. 57-74.


Title Individual variation in foraging movements in a lake population of young-of-the-year brook charr (Salvelinus fontinalis)
Author(s) Biro, Peter A.
Ridgway, Mark S.
Journal name Behaviour
Volume number 132
Issue number 1
Start page 57
End page 74
Total pages 18
Publisher Brill
Place of publication Leiden, The Netherlands
Publication date 1995
ISSN 0005-7959
1568-539X
Keyword(s) brook charr
foraging
habitat choice
movement
Summary We examined the variation in foraging movements in a population of young-of-the-year (YOY) brook charr living in the near-shore littoral zone of a lake. By repeating the methodology of an earlier stream study, we made direct comparisons between data from lake and stream populations. In general, the pattern of variation in foraging movements was similar between the two sites with greater variability and activity observed in the lake population. The dichotomous nature of the proportion of time spent moving in the stream was also observed in the lake population but in a reversal of the stream pattern. Charr that moved constantly while foraging represented the largest movement category in the lake. In general, variation in foraging movements were more strongly related to the rate of prey rejection, whereas environmental factors, such as distance from shore, submerged objects, and the amount of overhead riparian cover, were more strongly related to prey ingestion. This last finding directly contrasts with that found in the stream literature for YOY charr in still water where ingestion rate, as estimated using feeding attempt rate, increases with the mobility of YOY charr.
Language eng
Field of Research 060201 Behavioural Ecology
060801 Animal Behaviour
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30048068

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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