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Mainland size variation informs predictive models of exceptional insular body size change in rodents.

dc.contributor.author Durst, PA
dc.contributor.author Roth, VL
dc.coverage.spatial England
dc.date.accessioned 2015-06-23T14:42:52Z
dc.date.issued 2015-07-07
dc.identifier http://www.ncbi.nlm.nih.gov/pubmed/26085585
dc.identifier rspb.2015.0239
dc.identifier.uri https://hdl.handle.net/10161/10232
dc.description.abstract The tendency for island populations of mammalian taxa to diverge in body size from their mainland counterparts consistently in particular directions is both impressive for its regularity and, especially among rodents, troublesome for its exceptions. However, previous studies have largely ignored mainland body size variation, treating size differences of any magnitude as equally noteworthy. Here, we use distributions of mainland population body sizes to identify island populations as 'extremely' big or small, and we compare traits of extreme populations and their islands with those of island populations more typical in body size. We find that although insular rodents vary in the directions of body size change, 'extreme' populations tend towards gigantism. With classification tree methods, we develop a predictive model, which points to resource limitations as major drivers in the few cases of insular dwarfism. Highly successful in classifying our dataset, our model also successfully predicts change in untested cases.
dc.language eng
dc.relation.ispartof Proc Biol Sci
dc.relation.isversionof 10.1098/rspb.2015.0239
dc.subject biogeography
dc.subject body size
dc.subject decision tree
dc.subject island
dc.subject mammal
dc.subject rodent
dc.subject Animal Distribution
dc.subject Animals
dc.subject Biological Evolution
dc.subject Body Size
dc.subject Islands
dc.subject Models, Biological
dc.subject Rodentia
dc.title Mainland size variation informs predictive models of exceptional insular body size change in rodents.
dc.type Journal article
pubs.author-url http://www.ncbi.nlm.nih.gov/pubmed/26085585
pubs.issue 1810
pubs.organisational-group Biology
pubs.organisational-group Duke
pubs.organisational-group Evolutionary Anthropology
pubs.organisational-group Trinity College of Arts & Sciences
pubs.publication-status Published
pubs.volume 282
dc.identifier.eissn 1471-2954


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