The milkweed gives off a sap that
the aphids eat; then they secrete honeydew, a delicious snack for the ants.
Not exact matches
Ladybugs, among other insects, are released in the greenhouses to
eat aphids and otherunfriendly pests.
But so did the ladybirds (Coccinella septempunctata), even when there were no
aphids for them to
eat (Animal Behaviour, DOI: 10.1016 / j.anbehav.2012.01.008).
In the wild, they could perhaps acquire the compound by
eating plants that release it to fight
aphid infestations.
Food webs are made up of many dynamic feeding relationships; for example herbivore
aphids feed on Ground Elder and are themselves
eaten by hoverfly larvae.
APHIDS and caterpillars both like to
eat broccoli.
Parasitic wasps, on the other hand, prefer to lay their eggs inside green
aphids, perhaps because evolution has taught them that eggs laid in red
aphids get
eaten by ladybugs.
In a field study, Losey found that the ladybugs
eat more red
aphids because these stand out against the green pea plant.
Ants protect
aphids from predators, such as lady bugs and wasps, and
aphids secrete nutritious honeydew for ants to
eat.
In fact, ladybugs which are often considered «cute»; are actually great garden guests since they love to
eat pesky
aphids.