دورية أكاديمية
Tracing maternal transfer of methylmercury in the sheepshead minnow (Cyprinodon variegatus) with an enriched mercury stable isotope.
| العنوان: | Tracing maternal transfer of methylmercury in the sheepshead minnow (Cyprinodon variegatus) with an enriched mercury stable isotope. |
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| المؤلفون: | Stefansson ES; Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science , P.O. Box 38, Solomons, Maryland 20688, United States., Heyes A, Rowe CL |
| المصدر: | Environmental science & technology [Environ Sci Technol] 2014; Vol. 48 (3), pp. 1957-63. Date of Electronic Publication: 2014 Jan 16. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 0213155 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5851 (Electronic) Linking ISSN: 0013936X NLM ISO Abbreviation: Environ Sci Technol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Washington DC : American Chemical Society Original Publication: Easton, Pa. : American Chemical Society, c1967- |
| مواضيع طبية MeSH: | Maternal Exposure*, Killifishes/*metabolism , Methylmercury Compounds/*metabolism , Ovum/*metabolism, Animals ; Cyprinidae ; Diet ; Female ; Fishes/metabolism ; Isotopes/metabolism ; Mercury/analysis ; Mercury/metabolism ; Mercury Isotopes/analysis ; Ovum/chemistry |
| مستخلص: | Maternal transfer of methylmercury (MeHg) to eggs is an important exposure pathway for developing offspring. However, our understanding of this process is limited, particularly in estuarine fish. We conducted a 91-day chronic laboratory exposure of Cyprinodon variegatus to four concentrations of dietary MeHg ranging from 0.04 to 9.90 μg g(-1) dw. Juvenile fish were fed a preoogenesis MeHg diet for 28 days, after which the diet was switched to a diet enriched with Me(199)Hg, spanning the period of oogenesis, allowing us to differentiate between mercury stored in female tissues and mercury assimilated from the maternal diet during oogenesis. We found that both maternal body burden and clutch size were strong predictors of egg Hg content. A constant percentage of preoogenesis Hg was transferred to eggs in each treatment. Additionally, preoogenesis Hg and during-oogenesis Hg were transferred proportionally to eggs, suggesting that both female tissues and the maternal diet during oogenesis are significant sources of Hg. |
| المشرفين على المادة: | 0 (Isotopes) 0 (Mercury Isotopes) 0 (Methylmercury Compounds) FXS1BY2PGL (Mercury) RWZ4L3O1X0 (methylmercuric chloride) |
| تواريخ الأحداث: | Date Created: 20140111 Date Completed: 20151023 Latest Revision: 20181202 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1021/es404325c |
| PMID: | 24404938 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 1520-5851 |
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| DOI: | 10.1021/es404325c |