백미에서 쌀바구미의 내적자연증가율은 2$0^{circ}C$, $25^{circ}C$, 3$0^{circ}C$에서 각각 0.1759, 0.3242, 0.4798로 산출되었으며 실험온도역에서 일차 직선적 관계를 보였다. 평균세대기간은 해당온도에서 각각 18. 8, 10.5, 7. 1주로 추정되었다. 밀에서 보고된 쌀바구미의 생활사와 비교 했을때 백미에서의 동곤충의 증가율은 낮은 것이었으며 또한 세대기간에 미치는 온도효과는 더 현저한 것으로 나타났다. 이러한 현상은 밀에서의 그것에 비해 백미에서 쌀바구미의 총산란수가 적고, 동시에 연령에 따른 산란분포가 상이한 것에서 기인되는 것으로 사료된다.
The intrinsic rate of natural increase of the rice weevil in polished rice was estimated to be 0. 1755, 0.3242 and 0.4789 per head per week at 20$^{circ}C$, 25$^{circ}C$ and 30$^{circ}C$, respectively. The mean generation time was 18.8, 10.9 and 7. 1 weeks at the temperatures, respective. In comparison with the reports published in wheat, the life history phenomena were somewhat different: the rate was lower and the generation time was more sensitive to the temperature in polished rice than in wheat. Since other characteristics affecting the rate (development time, mortality during development and longevity of adults) were similar in both medium, differences in the life history phenomena could be due to the lower fecundity and its distribution pattern in relation to female age.
