Parallel divergent adaptation along replicated altitudinal gradients in Alpine trout
dc.contributor.author
Keller, Irene
dc.contributor.author
Schuler, Jolanda
dc.contributor.author
Bezault, Etienne
dc.contributor.author
Seehausen, Ole
dc.date.accessioned
2018-05-23T14:38:49Z
dc.date.available
2017-06-10T14:16:10Z
dc.date.available
2018-05-23T14:38:49Z
dc.date.issued
2012-10
dc.identifier.issn
1471-2148
dc.identifier.other
10.1186/1471-2148-12-210
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/63996
dc.identifier.doi
10.3929/ethz-b-000063996
dc.description.abstract
Background
The European trout (Salmo trutta species complex) occurs across a very wide altitudinal range from lowland rivers to alpine streams. Historically, the major European river systems contained different, evolutionarily distinct trout lineages, and some of this genetic diversity has persisted in spite of extensive human-mediated translocations. We used AFLP-based genome scans to investigate the extent of potentially adaptive divergence among major drainages and along altitudinal gradients replicated in several rivers.
Results
The proportion of loci showing evidence of divergent selection was larger between drainages than along altitudinal transects within drainages. This suggests divergent selection is stronger between drainages, or adaptive divergence is constrained by gene flow among populations within drainages, although the latter could not be confirmed at a more local scale. Still, altitudinal divergence occurred and, at approximately 2% of the markers, parallel changes of the AFLP band frequencies with altitude were observed suggesting that altitude may well be an important source of divergent selection within rivers.
Conclusions
Our results indicate that adaptive genetic divergence is common both between major European river systems and along altitudinal gradients within drainages. Alpine trout appear to be a promising model system to investigate the relative roles of divergent selection and gene flow in promoting or preventing adaptation to climate gradients.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
BioMed Central
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/2.0/
dc.subject
European trout
en_US
dc.subject
Local adaptation
en_US
dc.subject
Genome scan
en_US
dc.subject
AFLP
en_US
dc.subject
Environmental gradient
en_US
dc.subject
Parallel adaptation
en_US
dc.title
Parallel divergent adaptation along replicated altitudinal gradients in Alpine trout
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 2.0 Generic
ethz.journal.title
BMC Evolutionary Biology
ethz.journal.volume
12
en_US
ethz.journal.abbreviated
BMC evol. biol.
ethz.pages.start
210
en_US
ethz.size
16 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-10T14:20:11Z
ethz.source
ECIT
ethz.identifier.importid
imp5936505fa5b1942227
ethz.ecitpid
pub:101540
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-12T23:34:10Z
ethz.rosetta.lastUpdated
2024-02-02T04:53:35Z
ethz.rosetta.versionExported
true
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