DIVERSITY OF FLORAL VISITORS TO ECHINOPSIS ATACAMENSIS SUBSP. PASACANA (CACTACEAE)

摘要: Abstract Columnar cacti can be pollinated by various insect and vertebrate species, often showing either close adaptations to a single pollinator group, or mixed pollination syndrome, depending on variety of different animals for pollination. As data columnar in South America are scarce, we investigated the spectrum, frequency, behavior floral visitors Echinopsis atacamensis subsp. pasacana. We compared two habitats with differences mean annual precipitation human impact, finding considerably higher activity diversity flower population humidity. Bees, wasps, giant hummingbird (Patagona gigas) were shown visit cactus flowers during day gather nectar pollen. found marked spectrum between both populations. In one study site, introduced honeybee Apis mellifera removed large quantities pollen, but seemed comparatively inefficient pollinator. Additionally, fi...