Unity and disunity in the search for a unified reproductive skew theory

Sandra Vehrencamp's (1983)Animal Behaviour paper provided a rigorous mathematical foundation for understanding reproductive partitioning within animal societies by focusing on the limits to reproductive competition over reproductive shares among group members. The central idea is that the degre...

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Bibliographic Details
Published in:Animal behaviour 2013-06, Vol.85 (6), p.1137-1144
Main Authors: Reeve, H. Kern, Shen, Sheng-Feng
Format: Article
Language:English
Subjects:
Animal behavior
Animal reproduction
animals
Behavioral biology
competition
cooperation
dominance
evolution
group formation
reproductive share
reproductive skew theory
society
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Summary:Sandra Vehrencamp's (1983)Animal Behaviour paper provided a rigorous mathematical foundation for understanding reproductive partitioning within animal societies by focusing on the limits to reproductive competition over reproductive shares among group members. The central idea is that the degree of inequity in reproductive shares is limited by the option of group members to leave the group and reproduce elsewhere. This central idea has been retained in extensions of her model, and unification of these extensions with rival models has been developed to accommodate new data and alternative starting assumptions. Although some criticism has been directed towards skew theory, as presented both in the original Vehrencamp model and in subsequent syntheses, we show that many of these criticisms have been misguided. Synthetic skew theory, with Vehrencamp’s model as its cornerstone, stands as our most general and complete, yet still largely untested, framework for understanding the evolutionary forces shaping the evolution of reproductive partitioning in animal societies. •Vehrencamp (1983, Animal Behaviour) proposed a model for the distribution of reproduction among members of a society.•The model shows how external reproductive options can limit selfishness within groups.•It initiated a revolution in how we understand social evolution.•It also allowed us to quantitatively predict degrees of reproductive sharing.•Her model has led the way to a unified view of social evolution, one that is still largely untested in detail.
ISSN:0003-3472
1095-8282
DOI:10.1016/j.anbehav.2013.04.007