>Wish i had a couple of pen shells to give to the cause,  or at least a
>good  Religious Scallop Story - but since i don't i'll just ask a
>question that as a "shell man", i've long wondered about:   Are there
>any known environmental (Natural or man-made) conditions which can cause
>gigantism in any taxa of Molluscs?  Dwarfing of mollusc populations is a
>fairly common situation, but what about the reverse??
fternoon today!),
>Ross.

Hi, Ross

I've heard that parasitism, particularly by cestodes larvae (tapeworms),
can cause destruction of testes, producing hormonal problems leading to
gigantism.

Andrew