Invasive species are predicted to suffer from reductions in genetic diversity during founding
events, reducing adaptive potential. Integrating evidence from two literature reviews and two …

Animals that cooperate with nonrelatives represent a challenge to inclusive fitness theory,
unless cooperative behavior is shown to provide direct fitness benefits. Inheritance of …

Studies of social insect invasions to date have focused primarily on highly eusocial insects
such as ants and yellowjacket wasps. Yet insect societies without fixed, morphological caste …

Biological market theory is potentially useful for understanding helping behaviour in animal
societies. It predicts that competition for trading partners will affect the value of commodities …

Animals that live in cooperative societies form hierarchies in which dominant individuals
reap disproportionate benefits from group cooperation. The stability of these societies …

We examined the population genetic structure of an extremely successful invasive wasp,
Polistes dominulus. Although successful biological invasions of social insects have been …

Hierarchies constitute the base of many social groups. Hence, understanding how they are
established is critical. Here we examine how hierarchies are formed in foundresses …

Loss of the queen is a crisis for a social insect colony. The process of queen succession
could cause increased aggression and work inefficiencies, and the new queen, if the colony …

The paper wasp Polistes dominulus is unique among the social insects in that nearly one-
third of co-foundresses are completely unrelated to the dominant individual whose offspring …

Female Polistes paper wasps can initiate colonies either solitarily or in cooperative groups.
Reproduction is often distributed unequally in groups, even to the point of complete …