The effect of temperature and salinity on copper body-burden and copper toxicity to Hediste (Nereis) diversicolor |
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Authors: | P. T. E. Ozoh |
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Affiliation: | (1) Institute of Estuarin and Coastal Studies, School of Life Sciences, University of Hull, HU6 7RX, England;(2) Present address: Biology Programme, School of Science, Abubakar Tafawa Balewa University, P. M. B. 0248, Bauchi, Nigeria |
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Abstract: | Temperature from 12 to 22°C and salinity from 30.5 to 7.6 increased accumulation of copper in Hediste diversicolor. Copper accumulated ranged from 85.83 to 217.14 g g-1. Sediments reduced accumulation of copper under temperature-salinity combinations. Accumulated copper ranged from 90.19 to 153.26 g g-1.However, mortality of the worms was not solely dependent upon copper body-burden. It ranged from 34 to 45% and from 38 to 80% in the presence of sediment. A combination of osmoregulatory and thermal stresses increased the toxic effect of copper to the worms. |
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