RE: Latest Delicacy: Nuclear-Boosted Crayfish

["Willison, James" <WillisonJ@ttnus.com>]

Nothing new about that.  Trojan Nuclear Plant in Oregon had a pair of
fish rearing ponds connected to the heat exchangers in the service water
system and had given the ponds to the state.  In the mid-80's, after
some aquatic disease wiped out some of their stock, the state had the
ponds filled up and used the heated water to grow the fish faster.  That
first year, the state used the "culled" fish that were not as big as
they wanted, and by the time they were to be released, these smaller
fish (initially) were just as big as the fish from the normal
hatcheries.

In later years, the ponds were used for the aclimitization process for a
lot of the fish in the state system.  The fish were first put in water
the same temperature as at the hatcheries that they were used to, and
then over a couple week period the water temperature was lowered until
it matched the colder stream and river temperatures into which they
would be introduced.

I once heard the state fisheries people saying that in the heated water,
they could get twice the growth out of one-half the feed.

Jim Willison, CHP
ex-Trojanite
willisonj@ttnus.com
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