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Nectar addition changes pollinator behavior but not plant reproduction in pollen rewarding <i> Lupinus argenteus</i>

Authors: Heiling, J. M.; Bronstein, J. L.; Irwin, R. E.ORCID
Year: 2021
Journal: American Journal of Botany, Vol. 108, pp. 402-410
Publisher: UNKNOWN
DOI: 10.1002/ajb2.1613

Abstract

The addition of nectar to pollen-rewarding plants resulted in modest increases in per-flower pollinator visit duration and pollen transfer, but had no effect on reproduction because, at the place and time the experiment was conducted, plants were not pollen-limited. These results suggest that a pollen-only reward strategy may allow plants that are visited by pollen foragers to minimize some costs of reproduction by eliminating investment in other rewards, such as nectar, without compromising female plant fitness.

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