Table 4.11-— RADIOACTIVITY OF FISH FROM ALL STATIONS COMPARED BY
FEEDING HABITS*
Preshot
Common name
Postshot
n
Range
AY.
n
Range
Av.
Damael
Surgeon
Butterfly
Parrot
Blenny
16
8
6
4
6
=0.024-1.5
0.024-0.11
0.021~0.35
0.067-2.3
0.013-0.085
0.30
0.056
0.13
0.70
0.16
24
8
6
il
3
0.22 —800
0.31-—1100
0.27 ~—570
0.091 —340
0.042 —367
Brotulid
Mullet
Puffer
Filefish
5
i
0-0.57
0.022
0.11
0.022
1
2.8
All omnivores
46
0-2.3
0.22
57
0.042~—1100
Carnivores:
Grouper
Squirrel
Wrasse
Goatfish
Eel
7
1
11
8
3
0.017-0.064
0.035-—0.14
0.017—0.33
0.031 -—0.69
0.022 —0.032
0.039
0.120
0.070
0.16
0.029
8
11
29
4
4
0.32 -22
0.14—24
0.17-79
0.14-—7.6
0.11-61
6.8
11
30
2.3
46
Goby
Cardinal
Snapper
HRalfbeak
Jack
4
7
2
1
1
0.079 —0.130
0.004-0.450
0.026--0.066
0.073
0.041
0.092
0.082
0.046
0.073
0.041
q
5
3
1
2
0.22 —98
0.10-23
2.0—12
1.3
0.17 —0.86
56
10
5.5
1.3
0.52
Smelt
Flatfish
Reeffish
1
1
0.044
0.013
0.044
0.018
Omnivores:
All carnivores
51
Omnivores and
97
0.004 -0.69
0-2.3
0.081
0.15
3
1
5
11-160
220
13-17
300
150
120
62
130
2.8
60
220
190
47
79
0.10-—98
24
136
0.042 -1100
92
carnivores
* Measured in disintegrations per minute per gram (x 1000), wet sample.
Generally, in both preshot and postshot fish, the greatest amount of activity was found in
the gut, with liver, skin, bone, and muscle having lesser amounts in descending order of
magnitude. Exceptions to this sequence were most numerous in skin and bone counts, in
which the disintegration rates were about the same. Omnivores usually had slightly more
activity in the bone than in the skin, whereas the reverse was generally true in the carnivores.
Other exceptions occurred in moatof the fish at Japtan and in the preshot samples from
Igurin, where the activity in the livers was usually lower than in other tissues, whereas muscle radioactivity was comparatively high in proportion to other tissues and when compared
with other stations.
Counts in skin and bone averaged about twice the counts in muscle in preshot omnivores
and carnivores. In postshct omnivores the skin and bone counts were about five times those