Abstract：
:Sand temperatures at nest depths and implications for hatchling sex ratios of hawksbill turtles (Eretmochelys imbricata) and green turtles (Chelonia mydas) nesting in the Chagos Archipelago, Indian Ocean are reported and compared to similar measurements at rookeries in the Atlantic and Caribbean. During 2012-2014, temperature loggers were buried at depths and in beach zones representative of turtle nesting sites. Data collected for 12,546 days revealed seasonal and spatial patterns of sand temperature. Depth effects were minimal, perhaps modulated by shade from vegetation. Coolest and warmest temperatures were recorded in the sites heavily shaded in vegetation during the austral winter and in sites partially shaded in vegetation during summer respectively. Overall, sand temperatures were relatively cool during the nesting seasons of both species which would likely produce fairly balanced hatchling sex ratios of 53% and 63% male hatchlings, respectively, for hawksbill and green turtles. This result contrasts with the predominantly high female skew reported for offspring at most rookeries around the globe and highlights how local beach characteristics can drive incubation temperatures. Our evidence suggests that sites characterized by heavy shade associated with intact natural vegetation are likely to provide conditions suitable for male hatchling production in a warming world.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Esteban N,Laloë JO,Mortimer JA,Guzman AN,Hays GCdoi
10.1038/srep20339subject
Has Abstractpub_date
2016-02-02 00:00:00pages
20339issn
2045-2322pii
srep20339journal_volume
6pub_type
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journal_title：Scientific reports
pub_type： 杂志文章
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pub_type： 杂志文章
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pub_type： 已发布勘误
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更新日期：2016-09-15 00:00:00
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更新日期：2019-01-10 00:00:00
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更新日期：2019-07-01 00:00:00
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pub_type： 杂志文章
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更新日期：2016-09-12 00:00:00
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pub_type： 杂志文章
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更新日期：2017-03-22 00:00:00
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pub_type： 杂志文章
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更新日期：2017-07-24 00:00:00
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pub_type： 杂志文章
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更新日期：2016-10-26 00:00:00
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pub_type： 杂志文章
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更新日期：2017-09-12 00:00:00
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更新日期：2020-01-20 00:00:00
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更新日期：2015-09-25 00:00:00
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更新日期：2017-05-04 00:00:00
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journal_title：Scientific reports
pub_type： 杂志文章
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更新日期：2016-10-14 00:00:00
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pub_type： 已发布勘误
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更新日期：2020-02-05 00:00:00
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更新日期：2020-05-20 00:00:00
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更新日期：2020-04-01 00:00:00
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pub_type： 杂志文章
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更新日期：2013-01-01 00:00:00
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更新日期：2019-07-10 00:00:00
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pub_type： 杂志文章
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更新日期：2019-11-04 00:00:00
