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Botanic origin of pollen beehives’ loads from Africanized honeybees in Piracicaba, SP, Brazil

This study aimed to identify the botanic origin of pollen loads collected by Africanized honeybees. In Piracicaba (SP), during four seasons of the year, five honeybee colonies were installed with a frontal pollen collector in each one. The palinological preparation was done by the use of acetolysis and identified and counted approximately 900 pollen grains per sample. From the pollinic composition, the richness, diversity indexes and equitability were calculated. Throughout the year, 81 pollinic types were found, belonging to 32 botanic families, being Fabaceae, Asteraceae and Malvaceae the ones with the biggest frequency of pollinic types (≥5 pollinic types) and, Myrtaceae, the family with two pollinic types (Eucalyptus sp. and Myrcia sp.), among the nine most common types in the samples (> 10%). The biggest richness of pollinic types was during summer, and the biggest diversity and equitability was during spring. Fabaceae, Asteraceae, Malvaceae and Myrtaceae are the most important botanic families as polliniferous sources in Piracicaba - SP.

Apis mellifera; pollinic composition; pollinic type; bee flora


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