For non-heat shocked avocados infested with
eggs of Mediterranean fruit fly, mortality at 6 and
7 days were significantly different from 8, 9 and
12–16 days (Table 2). Comparing results of tests
in which infested fruit were heat shocked and
non-heat shocked prior to cold treatment we
found that application of heat shock contributed
to overall mortality of eggs. When averaged over
all the four tests, the results showed no survivors
of C. capitata eggs after 9 days of cold treatment
at any of the three temperature protocols. The
mean survivorship was 5.7% at 6 days of treatment
and less than 1% for days 7 or 8.