Malformations in sea urchin plutei exposed to mercuric chloride
What is it about?
Toxicity of HgCl2 has been verified on two sea urchin species. Two sea urchin species activate different mechanisms in response to Hg exposure. Subtropical sea urchin is the most sensitive. The subtropical species showed an increase in apoptotic-like signals.
Why is it important?
Signals were detected differently in the two species: TP fluorescence, commonly associated with apoptotic cells, did not increase with increasing HgCl2 concentrations in P. lividus and in fact, the TUNEL did not reveal induction of apoptosis. PI fluorescence increased in P. lividus in a dose-dependent manner, suggesting a loss of cell permeability. In E. mathaei plutei TP fluorescence increased at increasing HgCl2 concentrations. THG microscopy revealed skeletal rods in both species
The following have contributed to this page: Dr Andrea Gaion