科研之友
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摘要
over a 12 month period, pollen was sampled from the corbiculae of workers of the stingless bee frieseomelitta varia lepeletier 1836. collections were obtained immediately after sealing the hives, located in a forest fragment in the city of manaus. pollen was identified and monthly frequency of each type was tallied. the most-visited plant families in decreasing order of frequency were cecropiaceae, sapotaceae, myrtaceae and moraceae. identified pollen was harvested from 79 plant species in 60 genera and 37 families. the most frequent species were: cecropia sp., visited year-round but with highest attractiveness (82%) in january; morus sp., with peak attractiveness (37%) in december; myrcia amazonica dc. with 32% peak attractiveness in april; and pouteria macrophylla (a.dc.) eyma, with 37% peak attractiveness in june. curiously, we found pollen of the gymnosperm podocarpus, which is quite rare in amazonia, known from only a few sites. as far as we know, this is the first report of podocarpus pollen on meliponinae bees. for these urban hives of frieseomelitta varia lepeletier, podocarpus had a peak attractiveness of 4.94% in the month of march.
