Effects of Chemical Cues on Foraging in Damselfly Larvae, Enallagma antennatum

摘要: Animals experiencing a trade-off between predation risk and resource acquisition must accurately predict ambient levels of to maximize fitness. We measure this explicitly in larvae the damselfly Enallagma antennatum, comparing consumption rates presence chemical cues from predators injured prey. Damselflies distinguished among types based on species prey or eaten. Injured coexisting heterospecific unknown did not reduce foraging relative starved predator cues, while arising eating decrease foraging. This study shows cost terms reduced response further defines ability respond discerningly cues.