~30the southern birds.
Tne ratios,
for the
This was not the case except
south to north,
of activity for the different
lows:
gant and tissues are as fol
skin
79
je
muscle
5.2
bone
lung
liver
6.2
3.9
5.3
kidney
4.8
ileun
6.1
presence of more than six times as much activity in the in-
lestinal tract of the southern island terns as that found in the
J
lame organ of the northern island terns suggests that the southern
Birds have access to a supply of food fish containing greater
bmounts of radioactive material.
|
The higher level of activity in
the southern bird intestinal tracts is reflected in the greater
poncentrations of radioactive material in the other internal
brgans of the same animals.
In view of these observations it
probably would be advisable to
dmtain samples from Alinginae
ito212, located seven and one-half nautical miles southwest of
Rongelap Atoll, since the Rongelap natives collect birds at
Alinginae &s part of their food supply.
4
|
Tern eggs were collected at Kabelle July 16, December 8,
B954, and January 29, 1955.
The
levels of radioactivity in the
perious parts of the eggs were low, with that of the shell approx!-
Mating the levels found in the bones of terns collected the same
¥-
Radioactivity in the egg yolks varied from
15 to 3 times
pet found in the muscles of birds in the same collections. The
whites of the eggs contained the lowest amounts of radioactive
psotopes of all bird samples examined.
These bvels were from
p/25 to 1/2 those found in bird muscle collected the same day.
a