| Bioaccumulation and maternal transfer of PBDE 47 in the marine medaka (Oryzias melastigma) following dietary exposure. | |
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MedLine Citation:
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PMID: 21481818 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The bioaccumulation and maternal transfer of 2,2',4,4'-tetrabromodiphenyl ether (PBDE 47) were investigated in the marine medaka (Oryzias melastigma) following dietary exposure, in which PBDE 47 was bioencapsulated into brine shrimp (Artemia sp.) and fed daily to male-female pairs of medaka. In the accumulation experiment, each 2-month-old (pre-breeding) medaka were provided with dietary PBDE 47 at 1.3±0.2μg/day for 21days. Growth-corrected concentrations of PBDE 47 in the medaka increased over the 21days of exposure and there were no significant differences between males and females at any of the sampling times. Final concentrations were similar for males and females after 21days (230±30 and 250±30μgg(-1) wet weight, respectively), accounting for 84-100% of the PBDE 47 provided in the diet. In the maternal transfer experiment, 3-month-old (breeding) medaka were provided with dietary PBDE 47 at 1.2±0.2μg/day for 18days, and reached body concentrations of 76±3 (males) and 61±6 (females)μgg(-1) wet weight. Female growth-corrected PBDE 47 concentrations were significantly lower than males by day 12 (P<0.05), and egg PBDE 47 concentrations were up to 25ng/egg by day 18. Our results showed that maternal transfer is an important offloading mechanism for female fish. The fact that lipid normalized egg:female PBDE ratios did not significantly deviate from 1 further indicated that the maternal transfer of PBDE 47 is associated with lipid mobilization during egg production. |
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Authors:
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Jason P van de Merwe; Alice K Y Chan; Elva N Y Lei; M S Yau; Michael H W Lam; Rudolf S S Wu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-4 |
Journal Detail:
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Title: Aquatic toxicology (Amsterdam, Netherlands) Volume: 103 ISSN: 1879-1514 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-4-12 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8500246 Medline TA: Aquat Toxicol Country: - |
Other Details:
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Languages: ENG Pagination: 199-204 Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier B.V. All rights reserved. |
Affiliation:
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Centre for Marine Environmental Research and Innovative Technology, City University of Hong Kong, Kowloon, Hong Kong, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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