After this time, survivorship
continued to drop sharply in the 18.4 psu treatment; low levels of
mortality occurred in the 25.8, 33.1 and 36.8 psu treatments; and
survivorship remained stable in the 29.4 psu treatment. These
trends were also reflected in the estimated survival times for this
species, with the 18.4 psu treatment having a much shorter estimated
survival time (153 h) when compared to the other treatments
which ranged between 291 and 318 h (Table 1).
The proportion of surviving larvae decreased much more rapidly
for A. millepora when compared to P. daedalea (Fig. 2). This was
evidenced by an initial period of high mortality in the four highest
salinities during the first 96e144 h, followed by more stable survival
(Fig. 2b). The lowest salinity (18.4 psu), had very high levels of
mortality during the first 48 h, and by 144 h all of the larvae had
died. This treatment had an estimated survival time of 24 h, while
the maximum expected survival time of 264 h occurred in the
36.8 psu treatment