Factors affecting the proportion of sterile soldiers in growing aphid colonies

@article{Aoki2005FactorsAT,
  title={Factors affecting the proportion of sterile soldiers in growing aphid colonies},
  author={Shigeyuki Aoki and Masaru Imai},
  journal={Population Ecology},
  year={2005},
  volume={47},
  pages={127-136}
}
The proportion of sterile soldiers in an aphid colony is positively correlated with colony size. Assuming logistic growth of the aphid colony, Aoki and Kurosu (Insect Soc 50:256–261, 2003) presented an inequality that determines, for any colony size, whether a soldier or a reproductive will be added to the colony. To put it in words, if the marginal defensive efficacy of a soldier, multiplied by the number of reproductives, is larger than the mean productivity of reproductives without defense… 

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