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Benefits of a predator induced morphology in crucian carp

Nilsson, Anders LU ; Brönmark, Christer LU and Pettersson, Lars LU (1995) In Oecologia 104(3). p.291-296
Abstract
Crucian carp (Carassius carassius) develop a

deeper body in response to chemical cues from piscivores.

This change in body morphology has been suggested

to be a predator-induced defence. Here we investigate the

possible benefits of the induced body morphology in laboratory

experiments. Pike foraging behaviour when feeding

on crucian carp of different body depths was recorded

using video. Further, in a preference experiment pike

were allowed to choose between shallow-bodied and

deep-bodied crucian carp of similar lengths. Crucian

carp body morphology did not affect predatory behaviours

(activity, searching, following, observing,... (More)
Crucian carp (Carassius carassius) develop a

deeper body in response to chemical cues from piscivores.

This change in body morphology has been suggested

to be a predator-induced defence. Here we investigate the

possible benefits of the induced body morphology in laboratory

experiments. Pike foraging behaviour when feeding

on crucian carp of different body depths was recorded

using video. Further, in a preference experiment pike

were allowed to choose between shallow-bodied and

deep-bodied crucian carp of similar lengths. Crucian

carp body morphology did not affect predatory behaviours

(activity, searching, following, observing, capture

success) in northern pike, but an increase in crucian carp

body depth led to an increase in handling time in pike. In

the preference experiment, pike preferred shallow-bodied

crucian carp over deep-bodied. Thus, a change in body

morphology, induced by the presence of piscivores, benefits

crucian carp by increasing piscivore handling times

and an avoidance of the deep-bodied phenotype. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Predator-prey interactions, Induced defence, Phenotypic plasticity - Body depth. Carassius carassius
in
Oecologia
volume
104
issue
3
pages
291 - 296
publisher
Springer
external identifiers
  • scopus:0028983292
ISSN
1432-1939
DOI
10.1007/BF00328363
language
English
LU publication?
yes
id
c39f8ccf-358e-457f-84df-2350b98de135 (old id 942253)
date added to LUP
2008-01-22 14:12:36
date last changed
2017-10-29 03:24:16
@article{c39f8ccf-358e-457f-84df-2350b98de135,
  abstract     = {Crucian carp (Carassius carassius) develop a<br/><br>
deeper body in response to chemical cues from piscivores.<br/><br>
This change in body morphology has been suggested<br/><br>
to be a predator-induced defence. Here we investigate the<br/><br>
possible benefits of the induced body morphology in laboratory<br/><br>
experiments. Pike foraging behaviour when feeding<br/><br>
on crucian carp of different body depths was recorded<br/><br>
using video. Further, in a preference experiment pike<br/><br>
were allowed to choose between shallow-bodied and<br/><br>
deep-bodied crucian carp of similar lengths. Crucian<br/><br>
carp body morphology did not affect predatory behaviours<br/><br>
(activity, searching, following, observing, capture<br/><br>
success) in northern pike, but an increase in crucian carp<br/><br>
body depth led to an increase in handling time in pike. In<br/><br>
the preference experiment, pike preferred shallow-bodied<br/><br>
crucian carp over deep-bodied. Thus, a change in body<br/><br>
morphology, induced by the presence of piscivores, benefits<br/><br>
crucian carp by increasing piscivore handling times<br/><br>
and an avoidance of the deep-bodied phenotype.},
  author       = {Nilsson, Anders and Brönmark, Christer and Pettersson, Lars},
  issn         = {1432-1939},
  keyword      = {Predator-prey interactions,Induced defence,Phenotypic plasticity - Body depth. Carassius carassius},
  language     = {eng},
  number       = {3},
  pages        = {291--296},
  publisher    = {Springer},
  series       = {Oecologia},
  title        = {Benefits of a predator induced morphology in crucian carp},
  url          = {http://dx.doi.org/10.1007/BF00328363},
  volume       = {104},
  year         = {1995},
}