Antioxidant availability trades off with warning signals and toxin sequestration in the large milkweed bug ().

In some aposematic species the conspicuousness of an individual's warning signal and the concentration of its chemical defense are positively correlated. Several mechanisms have been proposed to explain this phenomenon, including resource allocation trade-offs where the same limiting resource is needed to produce both the warning signal and chemical defense. Here, the large milkweed bug (: Heteroptera, Lygaeinae) was used to test whether allocation of antioxidants, that can impart color, trade against their availability to prevent self-damage caused by toxin sequestration.

Dietary wariness.

What causes an animal to resist trying new food or incorporating it into their diet? In this Quick guide, Heyworth et al. discuss the phenomenon known as dietary wariness.