Fitness components estimated from population budgets of genotypic mixtures and hybrid populations of Tribolium

✍ Scribed by David E. McCauley; Robert R. Sokal

• Book ID: 104630653
• Publisher: Springer Netherlands
• Year: 1977
• Tongue: English
• Weight: 396 KB
• Volume: 47
• Category: Article
• ISSN: 0016-6707
• DOI: 10.1007/bf00123241

✦ Synopsis

The frequency of the black gene increased from 0.25 to over 0.28 in two generations of hybridization of the wild and Chicago Black strains of Tribolium castaneum. Population budgets constructed from census data taken at five-day intervals over both generations reveal marked differences in the mortality schedules of the three genotypes. Selection over a generation is explained as a two-step process involving differential production ofbb eggs and high +b survivorship. qb = 0.25, the mean frequency of the b allele rose rapidly to nearly qb = 0.5 by generation 15. The present work is intended to repeat the first two generations of lines starting with 25% black, with the intention of constructing population budgets for the three observable genotypes to provide insight into how differences in genotypic demography affect fitness.