Abstract：
:Cave ecosystems remain largely unstudied and risk being severely degraded as a result of anthropogenic activities. The Wonderfontein Cave, situated in the extensive gold mining region of the Witwatersrand Basin, is one such system that hosts a population of Clarias gariepinus, which is exposed to the influx of polluted mine water from the Wonderfontein Spruit River. The aim of this study was to investigate the bioaccumulation of metals, as well as relevant biomarkers, in C. gariepinus specimens sampled from the Wonderfontein Cave during high (April 2013) and low (September 2013) flow surveys. Results were also compared to a surface population associated with the Wonderfontein Spruit River. There were temporal differences in metal bioaccumulation patterns and this was attributed to the lack of dilution during the low flow period. Metals associated with acid mine drainage, i.e. Co, Mn and Zn were significantly higher in the Wonderfontein Cave population and were reflected in an increase in oxidative stress biomarkers (catalase, protein carbonyls and superoxide dismutase) and the induction of metallothionein, a biomarker of metal exposure. The surface population was exposed to metals associated with geological weathering processes, i.e. Fe and Al.
journal_name
Bull Environ Contam Toxicoljournal_title
Bulletin of environmental contamination and toxicologyauthors
du Preez G,Wepener Vdoi
10.1007/s00128-016-1799-2subject
Has Abstractpub_date
2016-07-01 00:00:00pages
18-23issue
1eissn
0007-4861issn
1432-0800pii
10.1007/s00128-016-1799-2journal_volume
97pub_type
杂志文章abstract：:The effects of multi-metal mixtures on the life-table demography of rotifers are not well known. In this study, the freshwater rotifer Brachionus calyciflorus was exposed to mixture of Cu, Zn, Cd, Cr, and Mn, and the life-table demographic parameters including net reproductive rate, generation time, life expectancy at...
journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
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journal_title：Bulletin of environmental contamination and toxicology
pub_type： 杂志文章
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更新日期：1975-12-01 00:00:00
abstract：:This study examined the potential for metabolism of select polycyclic aromatic hydrocarbons (PAH) by human enteric microorganisms. Experiments were performed under anaerobic conditions with various combinations of enteric microbial suspensions, PAH concentrations, nutrient mixtures, and time courses. No PAH metabolite...
journal_title：Bulletin of environmental contamination and toxicology
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