Floral scent in bird- and beetle-pollinated Protea species (Proteaceae): Chemistry, emission rates and function

► Pollinator shifts are often accompanied by changes in floral olfactory cues. ► Floral scents of beetle-pollinated Protea species are chemically complex and dominated by fruit esters. ► Floral scent emissions from beetle-pollinated species are 10-fold greater than those of bird-pollinated species. ► Cetoniine beetles show a significant preference for fruity Protea scents.