trend over the major portion of the survey period, the regression
line was calculated starting on about the 36th day post-Nectar,
and the same for other islands except Olive, where the maximus
was reached at 20 days, and at Leroy, where collections vere
first made on the l2sth day.
It is inferred from the failure of early samples to attain
levels in line with later samples on log-log plots, that a pertod
of approximately 30 days was generelly required for the uptake of
radioisotopes to reach equilibrium with the non-radtfoactive
constituents of the tissues, although at Olive this had apparently
occurred within 20 days.
The deviation of the decline points from log-log linearity
seems not to follow a pattern but to be random.
Only the decline
curve for gut at Henry resembles that of Belle Halimeda (Pig. 14),
land plant leaves (Pig. 16), Acropora (Pig. 18), and crab carapace
(Pig. 25), tz
days (sec
3 sinusoidal with point of inflection about 150
=—Ss sation, p. 40).
Pig 0 29 and Table 18 show decay
curves for sea cucumbe *slected to
include Belle, Leroy, ain. Henry, and
other islands rendomly.
They are unusually straight lines from as early as
50 days to 1100 days post-Nectar, and
are typical of other sea cucumber decays.
The slopes to 700 days renged
from -1.1 to -3.%.
Slopes steeper than
Declines exceeded all but two of
the decays (curves 1 and 5).
For sea
cucumbers, then, declines vere more
rapid than decays.
Taple 18.
Sates of rediaative ceeez,
ef samples ef cee eusmmere.
coferred to Sector,
Cate for “izure Z.
ieee
i
eet
UE if
A3 BHU
Bros BESS oes
SNE de
eat. 22
OS
&
tle,
wwe
*?
ieee
ee
NS
2480 @ 1. COe0 BEBO
sollas-
4
°
aie
ne.
- JE
Carve Plate Lesalitp late of Tissun
>
4a
AT
\
2
,
\
we
mee
aoe
NN
\ »
x
%
SONS
.
.
.
’
-a-
ma ncect
o
ar
-1.6 oceurred only at Henry, and at
Leroy vhere they vere particularly
steep.
At 700 days the steepest slopes
moderated, approaching the slopes of
the other curves.
.
‘
?
3