The Intersection of Bee and Flower Sexes: Pollen Availability Shapes Sex-Specific Bee Foraging Associations in Sunflower

Justin C. Roch, Rosemary Malfi, Jennifer I. Van Wyk, Deicy Carolina Muñoz Agudelo, Joan Milam & Lynn Adler
We evaluated whether female or male bees were more abundant on sunflowers, whether female bees were more abundant on pollen-fertile or pollen-sterile sunflower cultivars, and whether the bee community differed between pollen-fertile and pollen-sterile sunflower cultivars. We further evaluated whether bee communities were shaped by local floral resources and landscape composition. We sampled bees visiting sunflowers (Helianthus spp.) from 14 farms in the Connecticut River Valley of western Massachusetts between 25 July to 27 September...
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