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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1007/s10646-020-02325-x
|2 doi
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|a pubmed24n1067.xml
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|a eng
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| 100 |
1 |
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|a Norris, Sarah B
|e verfasserin
|4 aut
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| 245 |
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|a Mercury in neonatal and juvenile blacktip sharks (Carcharhinus limbatus). Part II
|b Effects assessment
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| 264 |
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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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|2 rdacarrier
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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 As apex predators, blacktip sharks (Carcharhinus limbatus) are highly susceptible to biomagnified mercury (Hg) particularly in the Gulf of Mexico (GOM), which is known to contain fishes and invertebrates with elevated Hg levels. Blacktip sharks occur in the GOM year-round and are heavily fished both commercially and recreationally, but little is known about how Hg affects the species. In this study, blood, muscle, liver, and kidney samples were collected from neonatal (n = 57) and juvenile (n = 13) blacktip sharks in Charlotte Harbor, Florida. Hg concentrations in neonates and juveniles were found to be elevated in muscle (mean ± SE = 0.59 ± 0.23 mg kg-1), liver (0.39 ± 0.29 mg kg-1), kidney (0.56 ± 0.25 mg kg-1), and blood (0.059 ± 0.041 mg kg-1) compared to other local shark species and conspecifics from other areas. Blood plasma chemistry, hematology, and liver histology were evaluated to assess the relationship between Hg and tissue damage. Plasma chemistry parameters alanine aminotransferase (ALT) and phosphorus (PHOS) were not correlated with tissue Hg or liver condition index. Hematological effects were also not correlated with tissue Hg. However, melanomacrophage presence and lipid deposition, evaluated as part of histopathological analysis, were found to exhibit a statistically significant association with concentrations of Hg in tissue and ALT levels. These results suggest that Hg exposure potentially had a negative effect on the livers of the blacktip sharks evaluated in the present study
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|a Journal Article
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|a Elasmobranch
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| 650 |
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|a Hematology
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| 650 |
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|a Histology
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| 650 |
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|a Juvenile
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| 650 |
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|a Mercury
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| 650 |
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|a Neonate
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| 650 |
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|a Mercury
|2 NLM
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| 650 |
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|a FXS1BY2PGL
|2 NLM
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| 700 |
1 |
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|a Reistad, Nicole A
|e verfasserin
|4 aut
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| 700 |
1 |
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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: 14. März, Seite 311-322
|w (DE-627)NLM098212214
|x 1573-3017
|7 nnns
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|g volume:30
|g year:2021
|g number:2
|g day:14
|g month:03
|g pages:311-322
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|u http://dx.doi.org/10.1007/s10646-020-02325-x
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