ALT Animals rely on sensory cues to choose mates before reproduction. Male octopuses use a specialized arm that acts as both a sensory and reproductive organ to navigate the female’s mantle, locate oviducts, and transfer sperm. These findings reveal how sensory systems shape reproductive behavior and drive speciation. This image shows courtship during mating.

ALT Cycad plants use thermogenesis to warm their reproductive cones. A beetle dusted with pollen and fluorescent dyes lands on the warm cone of a cycad. High concentrations of dye have been deposited on the cone’s hottest regions during previous visits by other labeled beetles. Beetle pollinators use these thermal infrared patterns as a guide to locate host pollen and ovulate cones.