Delimiting species in the genus Otospermophilus (Rodentia: Sciuridae), using genetics, ecology, and morphology
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Phuong, Mark A.; Lim, Marisa C. W.; Wait, Daniel R.; Rowe, Kevin C.; Moritz, Craig
Description
We apply an integrative taxonomy approach to delimit species of ground squirrels in the genus Otospermophilus because the diverse evolutionary histories of organisms shape the existence of taxonomic characters. Previous studies of mitochondrial DNA from this group recovered three divergent lineages within Otospermophilus beecheyi separated into northern, central, and southern geographical populations, with Otospermophilus atricapillus nested within the southern lineage of O. beecheyi. To...[Show more]
dc.contributor.author | Phuong, Mark A. | |
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dc.contributor.author | Lim, Marisa C. W. | |
dc.contributor.author | Wait, Daniel R. | |
dc.contributor.author | Rowe, Kevin C. | |
dc.contributor.author | Moritz, Craig | |
dc.date.accessioned | 2015-04-10T04:06:52Z | |
dc.date.available | 2015-04-10T04:06:52Z | |
dc.identifier.issn | 0024-4066 | |
dc.identifier.uri | http://hdl.handle.net/1885/13216 | |
dc.description.abstract | We apply an integrative taxonomy approach to delimit species of ground squirrels in the genus Otospermophilus because the diverse evolutionary histories of organisms shape the existence of taxonomic characters. Previous studies of mitochondrial DNA from this group recovered three divergent lineages within Otospermophilus beecheyi separated into northern, central, and southern geographical populations, with Otospermophilus atricapillus nested within the southern lineage of O. beecheyi. To further evaluate species boundaries within this complex, we collected additional genetic data (one mitochondrial locus, 11 microsatellite markers, and 11 nuclear loci), environmental data (eight bioclimatic variables), and morphological data (23 skull measurements). We used the maximum number of possible taxa (O. atricapillus, Northern O. beecheyi, Central O. beecheyi, and Southern O. beecheyi) as our operational taxonomic units (OTUs) and examined patterns of divergence between these OTUs. Phenotypic measures (both environmental and morphological) showed little differentiation among OTUs. By contrast, all genetic datasets supported the evolutionary independence of Northern O. beecheyi, although they were less consistent in their support for other OTUs as distinct species. Based on these data, we support the conclusions from a previous study that synonymized O. atricapillus with O. beecheyi, and we elevate the northern lineage of O. beecheyi to a separate species. | |
dc.description.sponsorship | This workwas supported by UC Berkeley Summer Undergradu-ate Research Fellowships to MAP and ML, UC Berke-ley Biology Fellows Program Awards to DRW and MAP,the Museum of Vertebrate Zoology UndergraduateBiodiversity Award, and the NSF DEB 0640859 to CM. | |
dc.publisher | Wiley | |
dc.rights | © 2014 The Linnean Society of London | |
dc.source | Biological Journal of the Linnean Society | |
dc.subject | diversification | |
dc.subject | integrative taxonomy | |
dc.subject | mammals | |
dc.subject | molecular systematics | |
dc.subject | species delimitation | |
dc.title | Delimiting species in the genus Otospermophilus (Rodentia: Sciuridae), using genetics, ecology, and morphology | |
dc.type | Journal article | |
local.identifier.citationvolume | 113 | |
dcterms.dateAccepted | 2014-07-07 | |
dc.date.issued | 2014-12 | |
local.identifier.absfor | 060301 - Animal Systematics and Taxonomy | |
local.identifier.ariespublication | a383154xPUB1060 | |
local.publisher.url | http://au.wiley.com/WileyCDA/ | |
local.type.status | Published version | |
local.contributor.affiliation | Moritz, C., Research School of Biology, The Australian National University | |
local.bibliographicCitation.issue | 4 | |
local.bibliographicCitation.startpage | 1136 | |
local.bibliographicCitation.lastpage | 1151 | |
local.identifier.doi | 10.1111/bij.12391 | |
local.identifier.absseo | 970106 - Expanding Knowledge in the Biological Sciences | |
dc.date.updated | 2015-12-10T09:54:54Z | |
local.identifier.scopusID | 2-s2.0-84922828710 | |
local.identifier.thomsonID | 000345319000020 | |
Collections | ANU Research Publications |
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