Alguns aspectos da biologia reprodutiva do Guaranazeiro (Paullinia cupana var . sorbilis (Mart.) Ducke - Sapindaceae.

Abstract

The. object off this paper was the Identification of Insects visiting guaraná (Paullinia cupana var. sorbilis) and the determination of probable ροΙinatiors, in a plantation near Manaus, as well asto determine the rate of visite on both male and female flowers. Also studied was the variation in frequency of male and female Flowers during the flwering periods. Thirty two families of insects were collected in five orders. Hymenoptera was the most frequent order with 71% of all the individuals. Twenty seven species os bees were found visiting the flowers. The general pollination síndrome for the species seems to be adapted to Hymenoptera. It is sugested that Melipona seminigra merrilae, Xylocopa muscaria and Apis mellifera are among the most importante pollinators while Other Hymenoptera, Diptera, Lepdoptera and Coleoptera may be occationals. Thres dos not seem to be any preference for male or female among the diferente groups of insects. Flowering occurred during a 37 – 38 days with two well defined periods. There was a 1 – 2 day pause (no flowering) between the two periods, coincidente in the all inflorescences studied. The firt period lasted 20 – 22 days, while the second, shorter period Only lasted 16 – 18 days. At no time did the flowerind peaks for male and female Flowers coincide.