Mussels as bioindicators

[operator]

Any information on the use of mussels, specifically Mytilus Edulis, as
indicators of microbial pollution and their ability to accumalate heavy
metals. If possible the LD50 of Mytilus Edulis for mercury, cadmium, lead
and zinc.                                    

Thank you.
Niall Horgan.
operator at iol.ie