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Predation by Rainbow Trout (Salmo gairdneri): the Influence of Hunger, Prey Density, and Prey Size
Abstract
The feeding behavior of rainbow trout (Salmo gairdneri) was investigated by exposing fish to several densities and sizes of prey over a range of four substrates of varying complexity. Within substrate treatments the rate of predation could be stimulated by increasing either prey density, prey size, or predator hunger. Between treatments, however, both the intensity of predation and total food consumption proved to be inversely related to the complexity of the substrate because a number of prey were able to find cover and thus escape detection.The results further indicate that the nature of foraging behavior may be controlled by a critical rate of food capture. If trout did not exceed an average of.058 captures sec,−1 substrate-oriented search proceeded to wane.
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Citations
Cited by
A review of planktivorous fishes: Their evolution, feeding behaviours, selectivities, and impacts
Lazzaro, X. (1987) · Hydrobiologia · doi:10.1007/bf00008764 · Cited by 565
Optimal prey selection in the great tit (Parus major)
Krebs, J. R., Erichsen, J. T., Webber, M. I., & Charnov, E. L. (1977) · Animal Behaviour · doi:10.1016/0003-3472(77)90064-1 · Cited by 559
Foraging Efficiency of Three Freshwater Fishes: Effects of Structural Complexity and Light
Diehl, S. (1988) · Oikos · doi:10.2307/3566064 · Cited by 477
Species Packing and Niche Complementarity in Three Sunfishes
Werner, E. E. (1977) · The American Naturalist · doi:10.1086/283184 · Cited by 408
Satiation amount, frequency of feeding and gastric emptying rate in Salmo gairdneri
Grove, D. J., Loizides, L. G., & Nott, J. (1978) · Journal of Fish Biology · doi:10.1111/j.1095-8649.1978.tb04195.x · Cited by 302
Metadata
- Authors
- Ware, D. M.
- Venue
- Journal of the Fisheries Research Board of Canada
- Publisher
- Canadian Science Publishing
- Published
- 1972-08-01
- Volume
- 29
- Issue
- 8
- Pages
- 1193-1201
- ISSN
- 0015-296X (ISSN-L)
- OpenAlex
- W2088112703
- Cited by
- 269
- References
- 0
- FWCI
- 1.27
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Predation by Rainbow Trout (Salmo gairdneri): the Influence of Hunger, Prey Density, and Prey Size. https://app.cochat.ai/papers/10.1139/f72-175
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- Ware, D. M. (1972). Predation by Rainbow Trout (Salmo gairdneri): the Influence of Hunger, Prey Density, and Prey Size. Journal of the Fisheries Research Board of Canada. https://doi.org/10.1139/f72-175
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
