No evidence of fine scale thermal adaptation in green turtles
dc.contributor.author | Tilley, D | |
dc.contributor.author | Ball, S | |
dc.contributor.author | Ellick, J | |
dc.contributor.author | Godley, BJ | |
dc.contributor.author | Weber, N | |
dc.contributor.author | Weber, SB | |
dc.contributor.author | Broderick, AC | |
dc.date.accessioned | 2019-05-15T12:57:25Z | |
dc.date.issued | 2019-03-16 | |
dc.description.abstract | Adaptation to increasing temperatures may enable species to mitigate the long-term impacts of climate change. Sea turtles have temperature dependent sex determination (TSD) and variation in the thermal reaction norm, which influences offspring sex ratio, has been suggested as a potential adaptive mechanism to rising global temperatures. Here, we investigate the sex ratio of green turtle Chelonia mydas offspring from nests on beaches with notable differences in their thermal properties, to look for evidence of localised adaptation. We compared pivotal temperatures and hatch success in both the laboratory and in situ using eggs laid on two nesting beaches (dark vs. pale sand) at Ascension Island that represent the extremes of the range of incubation temperatures experienced by this population. We found no effect of beach of origin on pivotal temperatures, hatch success, or hatchling size in the laboratory or the wild. This suggests that turtles from the same rookery are not locally adapted to different thermal conditions experienced during incubation. Under predicted climate change scenarios, this will result in reduced hatch success and an increased proportion of female offspring unless temporal or spatial range shifts occur. | en_GB |
dc.identifier.citation | Vol. 514-515, pp. 110 - 117 | en_GB |
dc.identifier.doi | 10.1016/j.jembe.2019.04.001 | |
dc.identifier.uri | http://hdl.handle.net/10871/37112 | |
dc.language.iso | en | en_GB |
dc.publisher | Elsevier | en_GB |
dc.rights | © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/) | en_GB |
dc.subject | Chelonia mydas | en_GB |
dc.subject | Pivotal temperature | en_GB |
dc.subject | Hatching success | en_GB |
dc.subject | Sea turtle | en_GB |
dc.subject | TSD | en_GB |
dc.subject | Climate change | en_GB |
dc.title | No evidence of fine scale thermal adaptation in green turtles | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2019-05-15T12:57:25Z | |
dc.identifier.issn | 0022-0981 | |
dc.description | This is the final version. Available on open access from Elsevier via the DOI in this record | en_GB |
dc.description | Data availability: Data are stored in the Ascension Island Government Conservation Department database. Data are available on figshare, under embargo until publication. Beach data: https://figshare.com/s/dc16fbd027a59560ce1d; Lab data: https://figshare.com/s/24788e81a4140547b38b. | en_GB |
dc.identifier.journal | Journal of Experimental Marine Biology and Ecology | en_GB |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2019-04-01 | |
rioxxterms.funder | Natural Environment Research Council | en_GB |
rioxxterms.identifier.project | NE/L009501/1 | en_GB |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2019-04-01 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2019-05-15T12:55:33Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2019-05-15T12:57:29Z | |
refterms.panel | A | en_GB |
rioxxterms.funder.project | ba4e00c4-8ee5-4cef-ae02-3533e44fbe9d | en_GB |
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Except where otherwise noted, this item's licence is described as © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/)