average
highest
23942405
unlike
Also
‘‘goatfish.
.
concentrations
how
and
fish
in
concentrations
1376,
the
239+2
and
1376,
that
are
Pu
environmental —
to
relate
It is sufficient to point out here
and biological factors is in preparation.
+240
these
Cs
A full discussion
are found in the muscle tissue of the pelagic lagoon fish.
of
137
of
accumulated
in
higher
concentrations
in
some
species than in others because of the capacity individual species of fish have
to accumulate these radionuclides from the environment.
ingestion
7
of
13 Cs
(presently
the
Therefore to minimize
:
largest
contributor
to
the
small
doses
from the marine food chain), species of bottom-feeding fish should make up a
larger fraction of the marine diet.
COMPARISON OF FISH AND INVERTEBRATE RADIONUCLIDE CONCENTRATIONS
TO THOSE OF
UNITED STATES AND OTHER MARINE FOOD PRODUCTS
Recent measurements of radionuclide concentrations in fish muscle tissue
and other marine dietary items
‘ sources
are
summarized
generalizations
analysis
of
in Tables
can be made
fish
from a variety of national and
by
radionuclide
11
and
12
comparing
respectively.
these
concentrations
at
Several
obvious
results
to
independent
the
international
Marshall
our
Islands.
The
average concentrations of ee in the muscle tissue of any species from the
atolls or islands fall within the range observed in fresh fish typically found
in the United States and Japanese markets.
The
905,
is approximately
two
to
three
times
less
in
fish
from
the
atolls or islands than the average 906, concentration found in fish products
imported to the United States for consumption.
If the sources for canned marine foods imported to Likiep, Wotho, Ailuk,
Ujelang,
States,
fish
Utirik,
it
is obvious
exceeds
indigenous
Mejit,
the
to
and
that
average
these
atolls
Rongelap
the
are
also
90, concentrations
concentration
and
those
islands.
in
the
The
Tables 2 and 10 are also within the range of
the
in present-day
muscle
137¢6
supplying
tissue
of
United
imported
all
concentrations
fish
shown
in
levels associated with United
States marine dietary products and are significantly less than concentrations
in many commerical fish consumed in the United Kingdom.
Except at Rongelap,
concentrations of 1370 in mullet are generally lower than the concentration
presently detected
Except
for
the
in the mullet
second
from the east coast of the
.
2
trophic-level
fish
12
from Rongelap,
United
394240,
States.
:
levels
in