Insights into the mechanisms of copper tolerance of a population of black-banded rainbowfish (Melanotaenia nigrans) (Richardson) exposed to mine leachate, using 64/67Cu
2003
Online
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Zugriff:
This study investigates the mechanisms of copper tolerance of a population of black-banded rainbowfish (Melanotaenia nigrans) (Richardson). The population has been exposed to elevated copper concentrations for over 40 years, due to leachate from the Rum Jungle uranium/copper mine. At the time of collection the 96 h EC50 of exposed [E] fish was 8.3 times higher than that of reference [R] fish. The bioconcentration of 64/67Cu in fish was used to investigate the mechanism of copper tolerance in E fish. Both E and R fish were exposed to low (LCu, 30 μg Cu l-1) and elevated (ECu, 300 μg Cu l-1) copper concentrations for 24 and 48 h, respectively. Radioactivity was measured at seven or eight time points in four tissue sections: head (including gills, heart and brain), internal organs (including gastrointestinal tract, liver, kidneys and gonads), muscle and whole body. One-compartment bioconcentration models were fit to data and compared using an F-test. Copper concentrations in all tissue sections were significantly (P
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Insights into the mechanisms of copper tolerance of a population of black-banded rainbowfish (Melanotaenia nigrans) (Richardson) exposed to mine leachate, using 64/67Cu
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Autor/in / Beteiligte Person: | Gale, SA ; Smith, SV ; Lim, RP ; Jeffree, RA ; Petocz, P |
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Veröffentlichung: | 2003 |
Medientyp: | unknown |
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