Convergent evolution of eusociality with the division of reproduction and its plastic transition
in Hymenoptera has long attracted the attention of researchers. To explain the evolutionary …

Female aggression towards other females is associated with reproduction in many taxa, and
traditionally thought to be related to the protection or provisioning of offspring, such as …

Highlights•Vespid wasp species vary in sociality and are useful for comparative social
evolution.•We review longevity patterns in vespids, noting a lack of data on solitary …

Division of labour in social insects represents a major evolutionary transition, but the
physiological mechanisms that regulate this are still little understood. Experimental work …

Division of labor is one of the most striking features in the evolution of eusociality. Juvenile
hormone (JH) mediates reproductive status and aggression among nestmates in primitively …

This chapter provides an overview of general aspects on juvenile hormone (JH)
biosynthesis, transport, and degradation, as well as mechanisms of action and roles of JH in …

Although much work has focused on non-social personality traits such as activity,
exploration, and neophobia, there is a growing appreciation that social personality traits play …

The 'challenge hypothesis' provides a predictive framework for how the social environment
influences within-species variation in hormone titers. High testosterone levels are beneficial …

Highlights•Androgen titres respond to social instability, dominance rank and mating
system.•Insects lack androgens, but juvenile hormone (JH) has key parallels with …

In vertebrates, titers of androgens such as testosterone are known to upregulate aggressive
behaviors associated with reproduction. In insects, juvenile hormone (JH) is a good …