Flowers with caffeinated nectar receive more pollination

Observational Conditioning in Flower Choice Copying by Bumblebees (Bombus terrestris): Influence of Observer Distance and Demonstrator Movement

(2014) Aurore Avarguès-Weber et al.   PLoS One

Ants and Ant Scent Reduce Bumblebee Pollination of Artificial Flowers

(2013) Adam R. Cembrowski et al.   AMERICAN NATURALIST

Dose-dependent effects of nectar alkaloids in a montane plant-pollinator community

(2013) Jessamyn S. Manson et al.   JOURNAL OF ECOLOGY

Long Term Effects of Aversive Reinforcement on Colour Discrimination Learning in Free-Flying Bumblebees

(2013) Miguel A. Rodríguez-Gironés et al.   PLoS One

Caffeine Boosts Bees' Memories

(2013) L. Chittka et al.   SCIENCE

Caffeine in Floral Nectar Enhances a Pollinator's Memory of Reward

(2013) G. A. Wright et al.   SCIENCE

Cardenolides in nectar may be more than a consequence of allocation to other plant parts: a phylogenetic study ofAsclepias

(2012) Jessamyn S. Manson et al.   FUNCTIONAL ECOLOGY

Nectar alkaloids decrease pollination and female reproduction in a native plant

(2011) Lynn S. Adler et al.   OECOLOGIA