Abstract
A survey was conducted to determine the couse of the losses of imported papaya fruits (Carica papaya L.) produced in Hawaii upon their arrival in Japan, from September 1986 to May 1987. The incidence of losses caused by physiolosical disorders, mechanical injury and pests and diseases was 0.9%, 1.8% and 0.9%. Analysis of the seasonal pattern indicated that the loss of fruits increased in December, and decreased in April and May.