Activities of Molds and Insects during Rice Storage -Part I. Activities of Tribolium castaneum Herbst and Aspergillus species-

쌀 저장중의 곰팡이와 저곡해충 -제 1 보. Tribolium castaneum Herbst와 Aspergillus species의 저장미에서의 생육-

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.

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.