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Sizing up your enemy: individual predation vulnerability predicts migratory probability

Skov, Christian; Baktoft, Henrik; Brodersen, Jakob; Bronmark, Christer; Chapman, Ben B.; Hansson, Lars-Anders LU and Nilsson, Anders LU (2011) In Royal Society of London. Proceedings B. Biological Sciences 278(1710). p.1414-1418
Abstract
Partial migration, in which a fraction of a population migrate and the rest remain resident, occurs in an extensive range of species and can have powerful ecological consequences. The question of what drives differences in individual migratory tendency is a contentious one. It has been shown that the timing of partial migration is based upon a trade-off between seasonal fluctuations in predation risk and growth potential. Phenotypic variation in either individual predation risk or growth potential should thus mediate the strength of the trade-off and ultimately predict patterns of partial migration at the individual level (i.e. which individuals migrate and which remain resident). We provide cross-population empirical support for the... (More)
Partial migration, in which a fraction of a population migrate and the rest remain resident, occurs in an extensive range of species and can have powerful ecological consequences. The question of what drives differences in individual migratory tendency is a contentious one. It has been shown that the timing of partial migration is based upon a trade-off between seasonal fluctuations in predation risk and growth potential. Phenotypic variation in either individual predation risk or growth potential should thus mediate the strength of the trade-off and ultimately predict patterns of partial migration at the individual level (i.e. which individuals migrate and which remain resident). We provide cross-population empirical support for the importance of one component of this model-individual predation risk-in predicting partial migration in wild populations of bream Abramis brama, a freshwater fish. Smaller, high-risk individuals migrate with a higher probability than larger, low-risk individuals, and we suggest that predation risk maintains size-dependent partial migration in this system. (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
partial migration, predation risk, phenotypic variation, Abramis brama, behavioural polymorphism
in
Royal Society of London. Proceedings B. Biological Sciences
volume
278
issue
1710
pages
1414 - 1418
publisher
Royal Society
external identifiers
  • wos:000288851800018
  • scopus:79953308516
ISSN
1471-2954
DOI
10.1098/rspb.2010.2035
project
CAnMove
BECC
language
English
LU publication?
yes
id
ce0dc4ff-9fe2-4dcb-a764-e22947bc915c (old id 1925673)
date added to LUP
2011-05-11 08:46:33
date last changed
2017-11-05 04:05:13
@article{ce0dc4ff-9fe2-4dcb-a764-e22947bc915c,
  abstract     = {Partial migration, in which a fraction of a population migrate and the rest remain resident, occurs in an extensive range of species and can have powerful ecological consequences. The question of what drives differences in individual migratory tendency is a contentious one. It has been shown that the timing of partial migration is based upon a trade-off between seasonal fluctuations in predation risk and growth potential. Phenotypic variation in either individual predation risk or growth potential should thus mediate the strength of the trade-off and ultimately predict patterns of partial migration at the individual level (i.e. which individuals migrate and which remain resident). We provide cross-population empirical support for the importance of one component of this model-individual predation risk-in predicting partial migration in wild populations of bream Abramis brama, a freshwater fish. Smaller, high-risk individuals migrate with a higher probability than larger, low-risk individuals, and we suggest that predation risk maintains size-dependent partial migration in this system.},
  author       = {Skov, Christian and Baktoft, Henrik and Brodersen, Jakob and Bronmark, Christer and Chapman, Ben B. and Hansson, Lars-Anders and Nilsson, Anders},
  issn         = {1471-2954},
  keyword      = {partial migration,predation risk,phenotypic variation,Abramis brama,behavioural polymorphism},
  language     = {eng},
  number       = {1710},
  pages        = {1414--1418},
  publisher    = {Royal Society},
  series       = {Royal Society of London. Proceedings B. Biological Sciences},
  title        = {Sizing up your enemy: individual predation vulnerability predicts migratory probability},
  url          = {http://dx.doi.org/10.1098/rspb.2010.2035},
  volume       = {278},
  year         = {2011},
}