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Skeletal indicators of ecological specialization in pika (Mammalia, Ochotonidae)
dc.contributor.authorReese, Aspen T.en_US
dc.contributor.authorLanier,, Hayley C.en_US
dc.contributor.authorSargis, Eric J.en_US
dc.date.accessioned2013-05-02T19:35:02Z
dc.date.available2014-07-01T15:53:28Zen_US
dc.date.issued2013-05en_US
dc.identifier.citationReese, Aspen T.; Lanier,, Hayley C.; Sargis, Eric J. (2013). "Skeletal indicators of ecological specialization in pika (Mammalia, Ochotonidae)." Journal of Morphology 274(5): 585-602. <http://hdl.handle.net/2027.42/97461>en_US
dc.identifier.issn0362-2525en_US
dc.identifier.issn1097-4687en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/97461
dc.description.abstractPika species generally fall into two ecotypes, meadow‐dwelling (burrowing) or talus‐dwelling, a classification that distinguishes a suite of different ecological, behavioral, and life history traits. Despite these differences, little morphological variation has previously been documented to distinguish among ecotypes. The aim of this study was to test whether postcranial features related to burrowing are present in meadow‐dwelling species and whether talus‐dwelling species exhibit postcranial modifications related to frequent leaping between rocks. To test this, the scapula, humerus, ulna, radius, innominate, femur, tibia, and calcaneus of 15 species were studied and measured. Twenty‐three measurements were taken on 199 skeletons, and 19 indices were constructed from these measurements. Indices were compared between the two ecotypes using Student's t ‐test. Comparisons among ecotypes, species, and subgenera were made using one‐way ANOVA with the Tukey honest significant difference post hoc test. Multivariate results were generated using principal components analyses. Thirteen forelimb and hind limb indices proved significant in distinguishing the meadow‐dwelling, talus‐dwelling, and intermediate forms. A number of these indices are associated with burrowing or leaping in other mammals, providing some support for the hypothesis that postcranial modifications in pika are related to locomotor differences. This evidence of morphological responses to ecological specialization will be useful for reconstructing the paleobiology of extinct taxa, assessing the behavioral variability of extant species, and improving our understanding of the evolutionary history of pikas. J. Morphol., 2013. © 2013 Wiley Periodicals, Inc.en_US
dc.publisherWiley Subscription Services, Inc., A Wiley Companyen_US
dc.subject.otherHind Limben_US
dc.subject.otherOchotonaen_US
dc.subject.otherDiggingen_US
dc.subject.otherForelimben_US
dc.subject.otherFunctional Morphologyen_US
dc.titleSkeletal indicators of ecological specialization in pika (Mammalia, Ochotonidae)en_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelMolecular, Cellular and Developmental Biologyen_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, Michigan 48109en_US
dc.contributor.affiliationotherDivision of Vertebrate Zoology, Yale Peabody Museum of Natural History, New Haven, Connecticut 06520en_US
dc.contributor.affiliationotherDepartment of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut 06520en_US
dc.contributor.affiliationotherDepartment of Anthropology, Yale University, New Haven, Connecticut 06520en_US
dc.contributor.affiliationotherDepartment of Biology, Duke University, Box 90338, Durham, NC 27705en_US
dc.identifier.pmid23381921en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/97461/1/20127_ftp.pdf
dc.identifier.doi10.1002/jmor.20127en_US
dc.identifier.sourceJournal of Morphologyen_US
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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