This is an average of 4.8 larvae per fruit with std. The mortality of insects from the two treatments was dramatically different. This difference in mortality is probably due to the rapidity of the cooling rather than water immersion. Taschenberg et al. The mortality of larvae over the longer period of time is presumed to be due to factors other than cold shock.
Mortality estimates from cold treatments.
The more rapid mortality of larvae in water-cooled fruits was probably from cold shock including the lack of time for the larvae to acclimate to the cold temperatures. Whatever the mechanism of death, this study has shown that rapid cooling brings about rapid mortality. Reductions in the treatment may make the treatment less costly and also less damaging to the fruits. References Cited Armstrong, J. W., S. T. Silva, and V. M. Shishido. Chen, C. -P., and V. K. Walker.