A sensory bias overrides learned preferences of bumblebees for honest signals in .

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2021
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Abstract
Insect pollinators readily learn olfactory cues, and this is expected to select for 'honest signals' that provide reliable information about floral rewards. However, plants might alternatively produce signals that exploit pollinators' sensory biases, thereby relaxing selection for signal honesty. We examined the innate and learned preferences of for floral scent phenotypes corresponding to different levels of pollen rewards in the presence and absence of the innately attractive floral volatile compound β-trans-bergamotene. Bees learned to prefer honest signals after foraging on live flowers, but only exhibited this preference when presented floral scent phenotypes that did not include β-trans-bergamotene. Our results suggest that a sensory bias for β-trans-bergamotene overrides the ability of to use honest signals when foraging on . This may represent a deceptive pollination strategy that allows plants to minimize investment in costly rewards without incurring reduced rates of pollinator visitation.
Reference Key
haber2021aproceedings Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Haber, Ariela I;Sims, James W;Mescher, Mark C;De Moraes, Consuelo M;Carr, David E;
Journal Proceedings. Biological sciences
Year 2021
DOI
10.1098/rspb.2021.0161
URL
Keywords
floral scent bombus impatiens mimulus guttatus floral rewards honest signal sensory bias

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