•Replacements for
DDT initially were other OCs such as Dieldrin & Lindane (BHC). These were
found to persist and bioaccumulate
and since have been banned.
•Dieldrin :
The variation of [dieldrin] in walleye
fish with time in Lake Eyrie has
shown a decline.
Dieldrin is a cyclodiene insecticide,
all are related to perchlorocyclopentadiene.