Abstract
Abstract The waxy layer on leaf surfaces may restrict the range of arthropod species that can grip the leaf, thus affecting biological interactions. Here, we report that the wax on the leaf surface of Phragmites australis leaves provides enemy-free space for the aphid Hyalopterus pruni. In our experiment, aphids had higher survival rates on Ph. australis leaves than on Prunus mume leaves in the presence of ladybirds. In addition, removal of wax from the surface of Ph. australis leaves enabled ladybugs to grip the surface of Ph. australis leaves and decreased the survival rate of aphids. These results indicate that the leaf wax of Ph. australis provides enemy-free space for H. pruni by inhibiting ladybird adhesion.
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