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  • Title: Suction feeding in orchid bees (Apidae: Euglossini).
    Author: Borrell BJ.
    Journal: Proc Biol Sci; 2004 May 07; 271 Suppl 4(Suppl 4):S164-6. PubMed ID: 15252972.
    Abstract:
    Energy flux during nectar feeding is maximized at an intermediate sugar concentration, the value of which depends on the morphology of the feeding apparatus and the modality of fluid feeding. Biomechanical models predict that a shift from capillary-based lapping to suction feeding will lead to a decrease in this optimal sugar concentration. Here, I demonstrate that the four major genera of orchid bees (Apidae: Euglossini) are suction feeders and provide experimental evidence that the feeding optimum for one species, Euglossa imperialis, falls below the optimum for bee taxa that lap.
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