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dc.contributor.author
Hangartner, Sandra
dc.contributor.author
Laurila, Anssi
dc.contributor.author
Räsänen, Katja
dc.date.accessioned
2018-05-23T08:30:51Z
dc.date.available
2017-06-09T20:17:07Z
dc.date.available
2018-05-23T08:30:51Z
dc.date.issued
2011-12
dc.identifier.issn
1471-2148
dc.identifier.other
10.1186/1471-2148-11-366
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/47492
dc.identifier.doi
10.3929/ethz-b-000047492
dc.description.abstract
Background Environmental stress can result in strong ecological and evolutionary effects on natural populations, but to what extent it drives adaptive divergence of natural populations is little explored. We used common garden experiments to study adaptive divergence in embryonic and larval fitness traits (embryonic survival, larval growth, and age and size at metamorphosis) in eight moor frog, Rana arvalis, populations inhabiting an acidification gradient (breeding pond pH 4.0 to 7.5) in southwestern Sweden. Embryos were raised until hatching at three (pH 4.0, 4.3 and 7.5) and larvae until metamorphosis at two (pH 4.3 and 7.5) pH treatments. To get insight into the putative selective agents along this environmental gradient, we measured relevant abiotic and biotic environmental variables from each breeding pond, and used linear models to test for phenotype-environment correlations. Results We found that acid origin populations had higher embryonic and larval acid tolerance (survival and larval period were less negatively affected by low pH), higher larval growth but slower larval development rates, and metamorphosed at a larger size. The phenotype-environment correlations revealed that divergence in embryonic acid tolerance and metamorphic size correlated most strongly with breeding pond pH, whereas divergence in larval period and larval growth correlated most strongly with latitude and predator density, respectively. Conclusion Our results suggest that R. arvalis has diverged in response to pH mediated selection along this acidification gradient. However, as latitude and pH were closely spatially correlated in this study, further studies are needed to disentangle the specific agents of natural selection along acidification gradients. Our study highlights the need to consider the multiple interacting selective forces that drive adaptive divergence of natural populations along environmental stress 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
Larval Period
en_US
dc.subject
Predator Density
en_US
dc.subject
Adaptive Divergence
en_US
dc.subject
Gosner Stage
en_US
dc.subject
Embryonic Survival
en_US
dc.title
Adaptive divergence of the moor frog (Rana arvalis) along an acidification gradient
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 2.0 Generic
ethz.journal.title
BMC Evolutionary Biology
ethz.journal.volume
11
en_US
ethz.journal.abbreviated
BMC evol. biol.
ethz.pages.start
366
en_US
ethz.size
12 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
004100194
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-09T20:18:39Z
ethz.source
ECIT
ethz.identifier.importid
imp59364f155027893208
ethz.ecitpid
pub:78269
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-12T18:34:35Z
ethz.rosetta.lastUpdated
2018-08-03T19:07:57Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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