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本文在五种温度下组建了稻纵卷叶螟实验种群生命表并比较了来自广西南宁、湖南衡阳、江苏南京三个种群发育速率的差异。结果表明,温度与发育速率呈逻辑斯谛曲线关系。三个种群发育速率无显著差异,协方差分析表明可以用一个公共的发育速率模型来代表三个种群。在20℃、23℃、26℃、29℃、32℃五种温度下,卵的孵化率、世代存活率均以26℃为最高,高于或低于26℃均下降。温度与孵化率、世代存活率呈二次抛物线关系。五种温度下的成虫产卵量以26℃为最高,29℃以上的高温对成虫产卵影响较大。温度在18.7℃—32.2℃范围内种群世代数量将呈上升趋势。在25.5℃时种群增长指数最大,繁殖一代将增加41.5倍。本文还组建了包括成虫期的生命表(l_x)和产雌特征生命表(m_x),计算了不同温度下种群的内禀增长力(r_m)和稳定年龄组配。
In this paper, the life table of the experimental population of C. medinalis was established at five different temperatures and the differences in the developmental rates of three populations from Nanning, Guangxi, Hengyang, Hunan and Nanjing of Jiangsu were compared. The results showed that the temperature and the development rate showed a Logistic curve. There was no significant difference in the rate of development of the three populations, and covariance analysis indicated that a common rate of development model could be used to represent the three populations. At 20 ℃, 23 ℃, 26 ℃, 29 ℃, 32 ℃, the hatching rate and generational survival rate of eggs were the highest at 26 ℃, and all of them were lower at 26 ℃. Temperature and hatchability, survival rate of a second generation parabolic relationship. The fecundity of adults at five temperatures was the highest at 26 ℃. The high temperature above 29 ℃ had a significant impact on adult eggs. Population temperature will be in the range of 18.7 ℃ -32.2 ℃, the population will increase. At 25.5 ℃, the population growth index is the largest, and the breeding generation will increase by 41.5 times. In this paper, the life table (l_x) and the fecundity life table (m_x) including adult stage were also established. The intrinsic growth force (r_m) and stable age group at different temperatures were calculated.