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Shape up or ship out: migratory behaviour predicts morphology across spatial scale in a freshwater fish.

Chapman, Ben LU ; Hulthén, Kaj LU ; Brönmark, Christer LU ; Nilsson, Anders LU ; Skov, Christian; Hansson, Lars-Anders LU and Brodersen, Jakob (2015) In Journal of Animal Ecology 84(5). p.1187-1193
Abstract
1.Migration is a widespread phenomenon, with powerful ecological and evolutionary consequences. Morphological adaptations to reduce the energetic costs associated with migratory transport are commonly documented for migratory species. However few studies have investigated whether variation in body morphology can be explained by variation in migratory strategy within a species. 2.We address this question in roach Rutilus rutilus, a partially migratory freshwater fish that migrates from lakes into streams during winter. We both compare body shape between populations that differ in migratory opportunity (open versus closed lakes), and between individuals from a single population that vary in migratory propensity (migrants and residents from a... (More)
1.Migration is a widespread phenomenon, with powerful ecological and evolutionary consequences. Morphological adaptations to reduce the energetic costs associated with migratory transport are commonly documented for migratory species. However few studies have investigated whether variation in body morphology can be explained by variation in migratory strategy within a species. 2.We address this question in roach Rutilus rutilus, a partially migratory freshwater fish that migrates from lakes into streams during winter. We both compare body shape between populations that differ in migratory opportunity (open versus closed lakes), and between individuals from a single population that vary in migratory propensity (migrants and residents from a partially migratory population). Following hydrodynamic theory, we posit that migrants should have a more shallow body depth, to reduce the costs associated with migrating into streams with higher flow conditions than the lakes the residents occupy all year round. 3.We find evidence both across and within-populations to support our prediction, with individuals from open lakes and migrants from the partially migratory population having a more slender, shallow-bodied morphology than fish from closed lakes and all-year residents. 4.Our data suggest that a shallow body morphology is beneficial to migratory individuals and our study is one of the first to link migratory strategy and intraspecific variation in body shape. This article is protected by copyright. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Animal Ecology
volume
84
issue
5
pages
1187 - 1193
publisher
Federation of European Neuroscience Societies and Blackwell Publishing Ltd
external identifiers
  • pmid:25823702
  • wos:000360093400005
  • scopus:84939260401
ISSN
1365-2656
DOI
10.1111/1365-2656.12374
project
CAnMove
language
English
LU publication?
yes
id
0117770d-5733-4385-a9cf-9372313510b5 (old id 5360788)
date added to LUP
2015-04-30 09:08:46
date last changed
2017-11-05 03:08:14
@article{0117770d-5733-4385-a9cf-9372313510b5,
  abstract     = {1.Migration is a widespread phenomenon, with powerful ecological and evolutionary consequences. Morphological adaptations to reduce the energetic costs associated with migratory transport are commonly documented for migratory species. However few studies have investigated whether variation in body morphology can be explained by variation in migratory strategy within a species. 2.We address this question in roach Rutilus rutilus, a partially migratory freshwater fish that migrates from lakes into streams during winter. We both compare body shape between populations that differ in migratory opportunity (open versus closed lakes), and between individuals from a single population that vary in migratory propensity (migrants and residents from a partially migratory population). Following hydrodynamic theory, we posit that migrants should have a more shallow body depth, to reduce the costs associated with migrating into streams with higher flow conditions than the lakes the residents occupy all year round. 3.We find evidence both across and within-populations to support our prediction, with individuals from open lakes and migrants from the partially migratory population having a more slender, shallow-bodied morphology than fish from closed lakes and all-year residents. 4.Our data suggest that a shallow body morphology is beneficial to migratory individuals and our study is one of the first to link migratory strategy and intraspecific variation in body shape. This article is protected by copyright. All rights reserved.},
  author       = {Chapman, Ben and Hulthén, Kaj and Brönmark, Christer and Nilsson, Anders and Skov, Christian and Hansson, Lars-Anders and Brodersen, Jakob},
  issn         = {1365-2656},
  language     = {eng},
  number       = {5},
  pages        = {1187--1193},
  publisher    = {Federation of European Neuroscience Societies and Blackwell Publishing Ltd},
  series       = {Journal of Animal Ecology},
  title        = {Shape up or ship out: migratory behaviour predicts morphology across spatial scale in a freshwater fish.},
  url          = {http://dx.doi.org/10.1111/1365-2656.12374},
  volume       = {84},
  year         = {2015},
}