Effects of anthropogenic seawater acidification on acid-base balance in the sea urchin Psammechinus miliaris.

@article{Miles2007EffectsOA,
  title={Effects of anthropogenic seawater acidification on acid-base balance in the sea urchin Psammechinus miliaris.},
  author={Hayley Miles and Stephen Widdicombe and John I. Spicer and Jason Hall Hall-Spencer},
  journal={Marine pollution bulletin},
  year={2007},
  volume={54 1},
  pages={
          89-96
        }
}
The purple-tipped sea urchin, Psammechinus miliaris, was exposed to artificially acidified seawater treatments (pH(w) 6.16, 6.63 or 7.44) over a period of 8 days. Urchin mortality of 100% was observed at pH(w) 6.16 after 7 days and coincided with a pronounced hypercapnia in the coelomic fluid producing an irrecoverable acidosis. Coelomic fluid acid-base measures showed that an accumulation of CO(2) and a significant reduction in pH occurred in all treatments compared with controls. Bicarbonate… CONTINUE READING
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