Tribolium castaneum은 건전미입(健全米粒)에서 완전한 생활환(生活環)을 완성(完成)하여 쌀에 가해가능성(加害可能性)을 보였으며 그 활동(活動)은 1.3%의 수분함량의 경우는 증가를 초래하였으나 곰팡이의 증식은 오히려 저해하는 경향을 보였다. T. castaneum의 생육은 Asp. repens에 의해 안정화(安定化)되었으나 Asp. niger에 의해서는 지체되었다.
To investigate the influences of biological factors on stored rice and their interactions, the activities of red Hour beetle(Tribolium castaneum) and 2 species of Aspergillus was observed during 6 weeks at $28^{circ}C{pm}1^{circ}C$. It was found that the red flour beetle could complete its life cycle on rice in six weeks. Its activity caused the increse of moisture content of rice(max. 1.3%) after 6 weeks, but the number of mold propagule on the surface of stored rice decreased. The growth of red flour beetle showed a stabilizing tendency on rice inoculated with Asp. repens while it was retarded with Asp. niger.
