Heat shock of infested avocado fruit without
cold treatment resulted in a mean of 86% of the
fruit fly eggs surviving compared to non-heat
shocked controls (Table 2, day 0). Cold treatment
of heat shocked fruit for 6–16 days at B2.2°C
showed a large increase in mortality at 6 and 7
days (4 and 0.5%, respectively) with no survivors
recovered after 8 days of treatment (Table 2).
Statistically there were no significant differences
among the heat shock fruit that had been cold
treated. The total estimated treated population
(ETP) for these tests were 8386 for the four tests,
while the total treated population (TTP) for the
four tests was 75 810. No survivors were found in
infested avocado held for 8 days and beyond in
these tests.