- Predators and parasitoids help keep plant-eating insect populations in check. In fact, some plants “actively attract predators and parasitoids by releasing chemicals.”[^1] [^1]: ‘[[Australian Museum. ‘Predators, parasites and parasitoids’, 2022.|Predators, parasites and parasitoids]]’, *Australian Museum*, updated 6 April 2022, https://australian.museum/learn/animals/insects/predators-parasites-and-parasitoids/.