The handicap principle is a simple but powerful metaphor that has had a major impact on
how biologists study and understand sexual selection. Here, I show that its application to …

Formerly domesticated organisms and artificially selected genes often escape controlled
cultivation, but their subsequent evolution is not well studied. In this review, we examine plant …

Arising from MA Nowak, CE Tarnita & EO Wilson Nature466, 1057–1062 (2010)10.1038/nature09205
; Nowak et al. reply Nowak et al. argue that inclusive fitness theory has been of …

Developmental plasticity, a phenomenon of importance in both evolutionary biology and
human studies of the developmental origins of health and disease (DOHaD), enables …

… we can use to deduce relative costs a priori (Getty 1998a, 1998b). The handicap principle
… marginal benefits rather than lower marginal costs (Getty 1998a). Absolute viability costs at …

Game-theoretic arguments are used to derive two new hypotheses to explain why territorial
residents so consistently defeat potential usurpers. Both hypotheses are based on help from …

It is widely accepted that a requirement for honest handicap signalling is that higher-quality
signallers pay lower marginal costs for advertising. This is a simple, powerful principle, but it …

Cryptic and mimetic prey species have evolved characteristics that contravene the ability of
predators to detect them and discriminate their value before initiating attack. Traditional …

Toxoplasma gondii is hypothesized to manipulate the behavior of warm-blooded hosts to
promote trophic transmission into the parasite’s definitive feline hosts. A key prediction of this …

Highlights • We measured singing by female house wrens during nest visits and during a
playback experiment. • Song was common at the start of egg laying when conspecifics threaten …