Competition asymmetry with taxon divergence

Competition asymmetry with taxon divergence.

Most organisms experience competition for resources, probably most of the time. As the structure and requirements of closely related species are generally liable to be more similar than in distantly linked species, Darwin suggested that the potential for competition was greater in the former. Since that time, studies have concentrated on interactions of either conspecifics or congeneric species...

Valence Competition and Platform Divergence∗

We study a game in which candidates for elected office first choose platforms and then invest in costly valences. The marginal return to valence accumulation depends on the degree of platform polarization—the closer together are the platforms, the more valence affects the election outcome. Consequently, even though candidates have no policy preferences, they diverge in equilibrium to soften val...

Asymptotic Distribution of Divergence Measure with Applications

Asymmetry within social groups: division of labour and intergroup competition

Social animals vary in their ability to compete with group members over shared resources and also vary in their cooperative efforts to produce these resources. Competition among groups can promote within-group cooperation, but many existing models of intergroup cooperation do not explicitly account for observations that group members invest differentially in cooperation and that there are often...

Competition among growing organs and developmental control of morphological asymmetry

Fluctuating asymmetry is often used as a measure of developmental instability, although its developmental basis is poorly understood. Theoretical models and experimental studies have suggested that feedback interactions between structures on the left and right sides of the body play a pivotal role in the control of asymmetry. Here we provide experimental evidence that competition for a limiting...