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Trading off safety against food : state dependent habitat choice and foraging in crucian carp

Pettersson, Lars B. LU orcid and Brönmark, Christer LU (1993) In Oecologia 95(3). p.353-357
Abstract

The influence of hunger level and predation risk on habitat choice and foraging in crucian carp, Carassius carassius, were studied in a laboratory experiment. Experiments were carried out in aquaria with or without a predator (pike, Esox lucius). Habitat use and foraging activity of three-fish foraging groups of either fed or hungry crucian carp were studied. Fish were allowed to choose between an open (risky) habitat with Tubifex worms and a habitat with dense vegetation (safe) without food. Habitat use was significantly affected by both risk of predation and hunger level. Crucian carp spent less time in the open habitat when there was a predator present and they also spent less time there when fed than when hungry. Furthermore, there... (More)

The influence of hunger level and predation risk on habitat choice and foraging in crucian carp, Carassius carassius, were studied in a laboratory experiment. Experiments were carried out in aquaria with or without a predator (pike, Esox lucius). Habitat use and foraging activity of three-fish foraging groups of either fed or hungry crucian carp were studied. Fish were allowed to choose between an open (risky) habitat with Tubifex worms and a habitat with dense vegetation (safe) without food. Habitat use was significantly affected by both risk of predation and hunger level. Crucian carp spent less time in the open habitat when there was a predator present and they also spent less time there when fed than when hungry. Furthermore, there was a significant interaction between risk of predation and hunger level, indicating a state-dependent trade-off between food acquisition and predator avoidance.

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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Crucian carp, Foraging, Hunger, Predation, Trade-off
in
Oecologia
volume
95
issue
3
pages
353 - 357
publisher
Springer
external identifiers
  • scopus:0002258409
ISSN
0029-8549
DOI
10.1007/BF00320988
language
English
LU publication?
yes
id
86ceb099-546e-4c5f-8b03-3f32eb08ae34
date added to LUP
2018-10-23 09:24:38
date last changed
2024-01-15 04:58:51
@article{86ceb099-546e-4c5f-8b03-3f32eb08ae34,
  abstract     = {{<p>The influence of hunger level and predation risk on habitat choice and foraging in crucian carp, Carassius carassius, were studied in a laboratory experiment. Experiments were carried out in aquaria with or without a predator (pike, Esox lucius). Habitat use and foraging activity of three-fish foraging groups of either fed or hungry crucian carp were studied. Fish were allowed to choose between an open (risky) habitat with Tubifex worms and a habitat with dense vegetation (safe) without food. Habitat use was significantly affected by both risk of predation and hunger level. Crucian carp spent less time in the open habitat when there was a predator present and they also spent less time there when fed than when hungry. Furthermore, there was a significant interaction between risk of predation and hunger level, indicating a state-dependent trade-off between food acquisition and predator avoidance.</p>}},
  author       = {{Pettersson, Lars B. and Brönmark, Christer}},
  issn         = {{0029-8549}},
  keywords     = {{Crucian carp; Foraging; Hunger; Predation; Trade-off}},
  language     = {{eng}},
  month        = {{09}},
  number       = {{3}},
  pages        = {{353--357}},
  publisher    = {{Springer}},
  series       = {{Oecologia}},
  title        = {{Trading off safety against food : state dependent habitat choice and foraging in crucian carp}},
  url          = {{http://dx.doi.org/10.1007/BF00320988}},
  doi          = {{10.1007/BF00320988}},
  volume       = {{95}},
  year         = {{1993}},
}