▪ Abstract Although best known for cooperation, insect societies also manifest many potential
conflicts among individuals. These conflicts involve both direct reproduction by individuals …

How sterile, altruistic worker castes have evolved in social insects and how they are
maintained have long been central topics in evolutionary biology. With the advance of kin …

A critical step in self-motion perception and spatial awareness is the integration of motion
cues from multiple sensory organs that individually do not provide an accurate …

In many bees, wasps, and ants, workers police each other in order to prevent individual
workers from selfishly producing their own male offspring. Although several factors can …

Insect societies are vulnerable to exploitation by workers who reproduce selfishly rather than
help to rear the queen's offspring. In most species, however, only a small proportion of the …

Mutual policing is an important mechanism that maintains social harmony in group-living
organisms by suppressing the selfish behavior of individuals. In social insects, workers …

The evolution of extreme cooperation, as found in eusocial insects (those with a worker
caste), is potentially undermined by selfish reproduction among group members,,. In some …

In many species of social Hymenoptera, unmated workers can lay eggs that will produce
males by parthenogenesis. Nevertheless, in queenright honey bee colonies (Apis mellifera) …

Being social and living in groups is often advantageous over leading a solitary life. At the
same time, however, cooperative systems are susceptible to exploitation and cheating by …

A potential tragedy of the commons arises in social-insect colonies where workers are fertile
if egg-laying workers decrease their contribution to other tasks. We studied worker ovary …