Macroevolution of arboreality in salamanders

dc.contributor.author Baken, Erica
dc.contributor.author Adams, Dean
dc.contributor.author Adams, Dean
dc.contributor.department Ecology, Evolution and Organismal Biology
dc.date 2019-07-17T17:09:50.000
dc.date.accessioned 2020-06-30T02:18:25Z
dc.date.available 2020-06-30T02:18:25Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2019
dc.date.issued 2019-01-01
dc.description.abstract <p>Evolutionary theory predicts that selection in distinct microhabitats generates correlations between morphological and ecological traits, and may increase both phenotypic and taxonomic diversity. However, some microhabitats exert unique selective pressures that act as a restraining force on macroevolutionary patterns of diversification. In this study, we use phylogenetic comparative methods to investigate the evolutionary outcomes of inhabiting the arboreal microhabitat in salamanders. We find that arboreality has independently evolved at least five times in Caudata and has arisen primarily from terrestrial ancestors. However, the rate of transition from arboreality back to terrestriality is 24 times higher than the converse. This suggests that macroevolutionary trends in microhabitat use tend toward terrestriality over arboreality, which influences the extent to which use of the arboreal microhabitat proliferates. Morphologically, we find no evidence for an arboreal phenotype in overall body proportions or in foot shape, as variation in both traits overlaps broadly with species that utilize different microhabitats. However, both body shape and foot shape display reduced rates of phenotypic evolution in arboreal taxa, and evidence of morphological convergence among arboreal lineages is observed. Taken together, these patterns suggest that arboreality has played a unique role in the evolution of this family, providing neither an evolutionary opportunity, nor an evolutionary dead end.</p>
dc.description.comments <p>This article is published as Baken, Erica K., and Dean C. Adams. "Macroevolution of arboreality in salamanders." <em>Ecology and Evolution</em> (2019). doi: <a href="http://dx.doi.org/10.1002/ece3.5267" target="_blank">10.1002/ece3.5267</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/eeob_ag_pubs/363/
dc.identifier.articleid 1369
dc.identifier.contextkey 14655754
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath eeob_ag_pubs/363
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/23248
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/eeob_ag_pubs/363/2019_Adams_MacroevolutionArboreality.pdf|||Fri Jan 14 23:47:50 UTC 2022
dc.source.uri 10.1002/ece3.5267
dc.subject.disciplines Ecology and Evolutionary Biology
dc.subject.disciplines Evolution
dc.subject.disciplines Terrestrial and Aquatic Ecology
dc.subject.keywords amphibian
dc.subject.keywords macroevolution
dc.subject.keywords microhabitat
dc.subject.keywords phylogenetic comparative methods
dc.title Macroevolution of arboreality in salamanders
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication a0b123a9-ab5f-41a2-879a-581582509519
relation.isOrgUnitOfPublication 6fa4d3a0-d4c9-4940-945f-9e5923aed691
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