Department of Zoology, University of Rhode Island, Kingston, Rhode Island 02881.
Genetics. 1977 Dec;87(4):785-805. doi: 10.1093/genetics/87.4.785.
Demographic and genetic data of continuously growing populations of Tribolium castaneum initiated with identical age structures but with different frequencies of the unsaturated fatty acid-sensitive allele were collected for 68 weeks.-The life history data provided the following insights: Genotypic differences for total number of offspring were due primarily to larval viability. The total lifetime offspring production of the genotypes predicted a stable polymorphic genetic equilibrium. The genotypic reproductive functions forecast that a stable age structure was not a prerequisite for genetic equilibrium.-Those cultures initially segregating for the unsaturated fatty acid-sensitive allele converged to an equilibrium allele frequency of 0.25 and a genotypic array composed of equal numbers of +/+ and +/cos individuals.-The numbers of larvae, pupae and adults during the first six weeks were quadratic functions of the initial frequency of the sensitive allele. Qualitative age structure changes that followed were similar in all cultures and demographic equilibrium was realized at week 50. The overall demographic pattern during the 68-week study was interpreted in terms of the interactions among the numbers of small larvae, large larvae plus pupae, and adults.
连续培养的赤拟谷盗种群的人口统计和遗传数据，其起始年龄结构相同，但不饱和脂肪酸敏感等位基因的频率不同，收集时间为 68 周。- 这些生命史数据提供了以下见解：总后代数量的基因型差异主要归因于幼虫的生存能力。基因型的终生后代产量预测了稳定的多态遗传平衡。基因型生殖功能预测，稳定的年龄结构不是遗传平衡的先决条件。- 那些最初分离不饱和脂肪酸敏感等位基因的培养物趋于达到 0.25 的平衡等位基因频率和由等量的+/+和+/cos 个体组成的基因型数组。- 在最初敏感等位基因频率的前六周，幼虫、蛹和成虫的数量是二次函数。随后的定性年龄结构变化在所有培养物中都相似，在第 50 周实现了人口平衡。在 68 周的研究期间，总体人口统计模式是根据小幼虫、大幼虫加蛹和成虫的数量之间的相互作用来解释的。
