【摘要】 在五种温度下,测定了棉铃虫未成熟期的发育速率并配合逻辑斯蒂曲线,它的发育起点温度和积温分别为10.87℃和505.03日度。组建了包括成虫期的生命表（l_x）和产雌特征生命表（m_x）,计算了棉铃虫在不同温度下的内禀增长能力和理论的稳定年龄组配。当环境温度为30℃时,内禀增长能力最大（r₌0.1902）,相应的周限增氏速率λ=1.210/天,世代平均历期T=31.27天,净繁殖率R₀=347.25。在15°—35℃范围内,棉铃虫实验种群的内禀增长能力呈抛物线趋势,在该种群的理论稳定年龄组配中,未成熟期都占有很高的比例,成虫不到3％更多还原

【Abstract】 Some of the results of a laboratory study on the relationship between temperature and the population dynamics of the cotton bollworm (H. armigcra) are presented in the paper. The rates of development of the immature stages of the cotton pest were determined at 5 constant temperatures from 15° to 35℃ and fitted to logistic curves. The threshold temperature and thermal requirment for the development of immature stage was calculated to be about 11℃ and 505°D (day-degree), respectively.The life tables (lx) and the age schedules of female birth (m,) were constructed. The innate capacities for increase and other useful indices of the laboratory population were compared at 5 temperatures. At 30℃ the innate capacity for increase- (rm) was determined to be 0.1902 and the finite rate of increase (λ) to be 1.210/day. The mean length of a generation (T) was calculated to be 31.27 days and the net reproductive rate (R0)to be 347.25. Above or below 30℃, rm fell to some extent and the lowest occured at 15℃. Therefore, the relationship between the temperatures and the innate capacities for increase of the pest showed a parabolical trend.The theoretical stable age distributions revealed that very high proportion of the immature stage (above 97%) was presented ill the laboratory populations as compared with the adult stage (less 3%) at all the temperatures tested.The ecological significance to study innate capacity for increase was briefly discussed.更多还原