Lasius japonicus (+) Symbiosis (+) Macrosiphoniella yomogicola
In this mutualism, the aphids give ants honeydew as food to obtain protection from predators. It seems that aphids manipulate ants to receive stronger protection (via increased aggression) through the dopamine present in the aphids’ honeydew. In the photo, ants protecting aphids from a ladybug.
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