Ancient DNA Analysis and Stable Isotope Ecology of Sea Turtles (Cheloniidae) from the Gold Rush-era (1850s) Eastern Pacific Ocean

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dc.contributor.authorKemp, Brian
dc.contributor.authorPagès Barceló, Laura
dc.contributor.authorSeminoff, Jeffrey
dc.contributor.authorTurner Tomaszewicz, Calandra
dc.contributor.authorLabonte, Marie
dc.contributor.authorJones, Emily Lena
dc.contributor.authorStolyka, Michael
dc.contributor.authorBruner, Kale
dc.contributor.authorPastron, Allen
dc.contributor.authorConrad, Cyler
dc.date.accessioned2018-07-23T17:49:50Z
dc.date.available2018-07-23T17:49:50Z
dc.date.issued2018-05-30
dc.description.abstractHistorical and archaeological evidence documents the importation of sea turtles from the eastern Pacific Ocean (Baja California) to California during the Gold Rush (1848–1855) and through the end of 19th century, but it is unknown whether these 19th century sea turtles foraged in similar ways to their modern counterparts. To identify the species of two Gold Rush-era sea turtle specimens recovered from archaeological deposits in San Francisco, California, we first analyze ancient DNA (aDNA). We then analyze carbon (δ13Ccol), nitrogen (δ15N), and hydrogen (δD) stable isotopes of bone collagen and carbon (δ13Cap) and oxygen (δ18Oap) stable isotopes of bone apatite to test if eastern Pacific sea turtle diets have changed over the past 160 years. Ancient DNA confirms that both archaeological specimens are green sea turtles (Chelonia mydas). The stable isotope values from the 19th-century specimens are statistically indistinguishable from the modern comparatives in both δ13Ccoland δ15N, suggesting that green sea turtle dietary intake has remained relatively unchanged since the 1850s. However, the values are unclear for δD and δ18Oapand require additional research.en_US
dc.description.peerreviewYesen_US
dc.description.peerreviewnotesOpen Quaternary is an international peer-reviewed venue for contributions that consider the changing environment of the Quaternary, as well as the development of humanity.en_US
dc.description.sponsorshipSupport for this work came the University of Oklahoma Libraries Open Access Fund.
dc.identifier.citationConrad, C. et al., (2018). Ancient DNA Analysis and Stable Isotope Ecology of Sea Turtles (Cheloniidae) from the Gold Rush-era (1850s) Eastern Pacific Ocean. Open Quaternary. 4(1), p.3.en_US
dc.identifier.urihttps://hdl.handle.net/11244/301303
dc.languageen_USen_US
dc.relation.urihttp://doi.org/10.5334/oq.41
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.subjectAncient DNAen_US
dc.subjectStable Isotopesen_US
dc.subjectSea Turtleen_US
dc.subjectCheloniiadeen_US
dc.subjectGold Rushen_US
dc.subjectSan Franciscoen_US
dc.titleAncient DNA Analysis and Stable Isotope Ecology of Sea Turtles (Cheloniidae) from the Gold Rush-era (1850s) Eastern Pacific Oceanen_US
dc.typeArticleen_US
ou.groupCollege of Arts and Sciences::Department of Anthropologyen_US

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