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dc.contributor.authorVenkataraman, VVen
dc.contributor.authorYegian, AKen
dc.contributor.authorWallace, IJen
dc.contributor.authorHolowka, NBen
dc.contributor.authorTacey, Ien
dc.contributor.authorGurven, Men
dc.contributor.authorKraft, TSen
dc.date.accessioned2021-09-30T19:54:32Z
dc.date.available2021-09-30T19:54:32Z
dc.date.issued2018-11-07en
dc.identifier.issn0962-8452en
dc.identifier.urihttp://hdl.handle.net/10026.1/17977
dc.description.abstract

<jats:p>The convergent evolution of the human pygmy phenotype in tropical rainforests is widely assumed to reflect adaptation in response to the distinct ecological challenges of this habitat (e.g. high levels of heat and humidity, high pathogen load, low food availability, and dense forest structure), yet few precise adaptive benefits of this phenotype have been proposed. Here, we describe and test a biomechanical model of how the rainforest environment can alter gait kinematics such that short stature is advantageous in dense habitats. We hypothesized that environmental constraints on step length in rainforests alter walking mechanics such that taller individuals are expected to walk more slowly due to their inability to achieve preferred step lengths in the rainforest. We tested predictions from this model with experimental field data from two short-statured populations that regularly forage in the rainforest: the Batek of Peninsular Malaysia and the Tsimane of the Bolivian Amazon. In accordance with model expectations, we found stature-dependent constraints on step length in the rainforest and concomitant reductions in walking speed that are expected to compromise foraging efficiency. These results provide the first evidence that the human pygmy phenotype is beneficial in terms of locomotor performance and highlight the value of applying laboratory-derived biomechanical models to field settings for testing evolutionary hypotheses.</jats:p>

en
dc.format.extent20181492 - 20181492en
dc.languageenen
dc.language.isoenen
dc.publisherThe Royal Societyen
dc.titleLocomotor constraints favour the evolution of the human pygmy phenotype in tropical rainforestsen
dc.typeJournal Article
plymouth.issue1890en
plymouth.volume285en
plymouth.publication-statusPublisheden
plymouth.journalProceedings of the Royal Society B: Biological Sciencesen
dc.identifier.doi10.1098/rspb.2018.1492en
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Arts, Humanities and Business
plymouth.organisational-group/Plymouth/Faculty of Arts, Humanities and Business/School of Society and Culture
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.identifier.eissn1471-2954en
dc.rights.embargoperiodNot knownen
rioxxterms.versionofrecord10.1098/rspb.2018.1492en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.typeJournal Article/Reviewen


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