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20231225172213.0 |
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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1007/s10646-020-02322-0
|2 doi
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|a pubmed24n1065.xml
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|a (NLM)33415661
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
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|a Reistad, Nicole A
|e verfasserin
|4 aut
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|a Mercury in neonatal and juvenile blacktip sharks (Carcharhinus limbatus). Part I
|b exposure assessment
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 27.04.2021
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|a Date Revised 27.04.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Elasmobranchs are exposed to mercury (Hg) through a variety of pathways in the environment. This study assessed maternal offloading and diet-based Hg exposure for neonatal and juvenile blacktip sharks (Carcharhinus limbatus) from Charlotte Harbor located along southwest Florida's coast, a recognized Hg hotspot. Neonates (n = 57) had highest total Hg (THg) concentrations in the kidney (0.56 ± 0.26 mg kg-1; n = 38) and muscle (0.53 ± 0.17 mg kg-1; n = 57), followed by liver (0.31 ± 0.11 mg kg-1; n = 38), and blood (0.05 ± 0.033 mg kg-1; n = 57). Juveniles (n = 13) exhibited a different distribution with highest THg in the liver (0.868 ± 0.54 mg kg-1; n = 6), followed by the muscle (0.84 ± 0.28 mg kg-1; n = 13), kidney (0.55 ± 0.22 mg kg-1; n = 6), and blood (0.11 ± 0.04 mg kg-1; n = 11). The distribution of THg among tissues and liver-to-muscle ratios indicated that Hg originated primarily from maternal offloading in neonates, whereas juveniles continued to accumulate Hg through dietary exposure post-parturition. Additionally, comparisons between results of the present study and previous Florida blacktip shark surveys suggested that Hg levels have not declined in southwest Florida estuaries for over two decades
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|a Journal Article
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|a Chondrichthyes
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|a Dietary exposure
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|a Elasmobranch
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|a Florida
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|a Maternal offloading
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|a Organs
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|a Mercury
|2 NLM
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| 650 |
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|a Norris, Sarah B
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|4 aut
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|a Rumbold, Darren G
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Ecotoxicology (London, England)
|d 1992
|g 30(2021), 2 vom: 07. März, Seite 187-197
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|x 1573-3017
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|g volume:30
|g year:2021
|g number:2
|g day:07
|g month:03
|g pages:187-197
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|u http://dx.doi.org/10.1007/s10646-020-02322-0
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