Data from: Evolutionary consequences of ecological factors: pollinator reliability predicts mating-system traits of a perennial plant

Øystein H. Opedal, Elena Albertsen, W. Scott Armbruster, Rocio Perez-Barrales, Mohsen Falahati-Anbaran & Christophe Pelabon
The reproductive-assurance hypothesis predicts that mating-system traits will evolve towards increased autonomous self-pollination in plant populations experiencing unreliable pollinator service. We tested this long-standing hypothesis by assessing geographic covariation among pollinator reliability, outcrossing rates, heterozygosity, and relevant floral traits across populations of Dalechampia scandens in Costa Rica. Mean outcrossing rates ranged from 0.16 to 0.49 across four populations, and covaried with the average rates of pollen arrival on stigmas, a measure of pollinator reliability. Across...
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