In examining what sex ratio control might mean in the animal world from a positive viewpoint, one may ask "What are the advantages of sex control?" The answer most frequently given is that it permits the breeder to have what he wants. However, in practice, what the breeder and commercial...
Within the Diptera, two different selfish genetic elements are known to cause the production of female-biased sex ratios: maternally inherited bacteria that kill male zygotes (male-killers), and X chromosomes causing the degeneration of Y-bearing sperm in males (meiotic drive). We here develop ...
Experimental manipulation of queen number affects colony sex ratio investment in the highly polygynous ant Formica exsecta In polygynous (multiple queens per nest) ants, queen dispersal is often limited with young queens being recruited within the parental colony. This mode of ......