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

Pettersson, Lars LU 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... (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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Trade-off- Hunger - Predation - Foraging - Crucian carp
in
Oecologia
volume
95
issue
3
pages
353 - 357
publisher
Springer
external identifiers
  • scopus:34250076360
ISSN
1432-1939
DOI
10.1007/BF00320987
language
English
LU publication?
yes
id
14b3f429-eac5-4700-9d95-8facee0c43c8 (old id 942267)
date added to LUP
2008-01-22 13:35:40
date last changed
2017-07-30 03:30:33
@article{14b3f429-eac5-4700-9d95-8facee0c43c8,
  abstract     = {The influence of hunger level and predation<br/><br>
risk on habitat choice and foraging in crucian carp,<br/><br>
Carassius carassius, were studied in a laboratory experiment.<br/><br>
Experiments were carried out in aquaria with or<br/><br>
without a predator (pike, Esox lucius). Habitat use and<br/><br>
foraging activity of three-fish foraging groups of either<br/><br>
fed or hungry crucian carp were studied. Fish were allowed<br/><br>
to choose between an open (risky) habitat with Tubifex<br/><br>
worms and a habitat with dense vegetation (safe)<br/><br>
without food. Habitat use was significantly affected by<br/><br>
both risk of predation and hunger level. Crucian carp<br/><br>
spent less time in the open habitat when there was a<br/><br>
predator present and they also spent less time there when<br/><br>
fed than when hungry. Furthermore, there was a significant<br/><br>
interaction between risk of predation and hunger<br/><br>
level, indicating a state-dependent trade-off between food<br/><br>
acquisition and predator avoidance.},
  author       = {Pettersson, Lars and Brönmark, Christer},
  issn         = {1432-1939},
  keyword      = {Trade-off- Hunger - Predation - Foraging - Crucian carp},
  language     = {eng},
  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/BF00320987},
  volume       = {95},
  year         = {1993},
}