{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T04:16:27Z","timestamp":1785903387443,"version":"3.56.0"},"reference-count":25,"publisher":"Oxford University Press (OUP)","issue":"8","license":[{"start":{"date-parts":[[2015,3,11]],"date-time":"2015-03-11T00:00:00Z","timestamp":1426032000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"},{"start":{"date-parts":[[2015,6,1]],"date-time":"2015-06-01T00:00:00Z","timestamp":1433116800000},"content-version":"vor","delay-in-days":82,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100004352","name":"EI DuPont de Nemours and Company","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100004352","id-type":"DOI","asserted-by":"crossref"}]},{"name":"the China Scholarship Council","award":["201206010230"],"award-info":[{"award-number":["201206010230"]}]},{"name":"the National High Technology Research and Development Program of China","award":["2012AA062802"],"award-info":[{"award-number":["2012AA062802"]}]},{"DOI":"10.13039\/501100001809","name":"the National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["41130535"],"award-info":[{"award-number":["41130535"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["setac.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2015,3,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>\u2003<\/jats:title>\n                  <jats:p>Bird eggs are used widely as noninvasive bioindicators for environmental mercury availability. Previous studies, however, have found varying relationships between laying sequence and egg mercury concentrations. Some studies have reported that the mercury concentration was higher in first-laid eggs or declined across the laying sequence, whereas in other studies mercury concentration was not related to egg order. Approximately 300 eggs (61 clutches) were collected from captive zebra finches dosed throughout their reproductive lives with methylmercury (0.3 \u03bcg\/g, 0.6\u2009\u03bcg\/g, 1.2\u2009\u03bcg\/g, or 2.4\u2009\u03bcg\/g wet wt in diet); the total mercury concentration (mean \u00b1 standard deviation [SD] dry wt basis) of their eggs was 7.03\u2009\u00b1\u20091.38\u2009\u03bcg\/g, 14.15\u2009\u00b1\u20092.52\u2009\u03bcg\/g, 26.85\u2009\u00b1\u20095.85\u2009\u03bcg\/g, and 49.76\u2009\u00b1\u200910.37\u2009\u03bcg\/g, respectively (equivalent to fresh wt egg mercury concentrations of 1.24\u2009\u03bcg\/g, 2.50\u2009\u03bcg\/g, 4.74\u2009\u03bcg\/g, and 8.79\u2009\u03bcg\/g). The authors observed a significant decrease in the mercury concentration of successive eggs when compared with the first egg and notable variation between clutches within treatments. The mercury level of individual females within and among treatments did not alter this relationship. Based on the results, sampling of a single egg in each clutch from any position in the laying sequence is sufficient for purposes of population risk assessment, but it is not recommended as a proxy for individual female exposure or as an estimate of average mercury level within the clutch. Environ Toxicol Chem 2015;34:1787\u20131792. \u00a9 2015 SETAC<\/jats:p>\n               <\/jats:sec>","DOI":"10.1002\/etc.2976","type":"journal-article","created":{"date-parts":[[2015,3,11]],"date-time":"2015-03-11T11:21:59Z","timestamp":1426072919000},"page":"1787-1792","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Effect of laying sequence on egg mercury in captive zebra finches: An interpretation considering individual variation"],"prefix":"10.1093","volume":"34","author":[{"given":"Langbo","family":"Ou","sequence":"first","affiliation":[{"name":"Institute for Integrative Bird Behavior StudiesDepartment of BiologyCollege of William & Mary Williamsburg Virginia USA"},{"name":"Ministry of Education Laboratory of Earth Surface ProcessCollege of Urban and Environmental SciencesPeking University Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claire W.","family":"Varian-Ramos","sequence":"additional","affiliation":[{"name":"Biology DepartmentColorado State University-Pueblo Pueblo Colorado USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel A.","family":"Cristol","sequence":"additional","affiliation":[{"name":"Institute for Integrative Bird Behavior StudiesDepartment of BiologyCollege of William & Mary Williamsburg Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2015,3,11]]},"reference":[{"key":"2025010315584764000_etc2976-bib-0001","doi-asserted-by":"crossref","first-page":"2927","DOI":"10.1897\/05-574R1.1","article-title":"Regional and species-specific bioaccumulation of major and trace elements in arctic seabirds","volume":"25","author":"Borg\u00e5","year":"2006","journal-title":"Environ 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