Wenn Sammlerbienen eine Blüte besuchen und den Nektar aufgesaugt haben, markieren sie diese mit einem speziellen Duft, damit ihre Kolleginnen wissen, dass es hier nichts mehr zu holen gibt. Der Duft besteht aus einem bestimmten Pheromon, welches von einem Haftläppchen an den Hinterbeinen auf die Blüte übertragen wird.
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