Reproductive success and production of nectar in Mandevilla funiformis (Apocynaceae): accessibility to visitors and effect of floral stage

The herbaceous vine Mandevilla funiformis (Vell.) K. Schum. occurs in open vegetation the Southern Brazil. present study was carried out a sandbank, east of Florianópolis, Santa Catarina State. Floral morphology, nectar features (production pattern, removal effects, and standing crop), floral visitors (including pollinator, robber thief nectar), fruit set seed germination M. were studied. Every plant produced an average 31.5 inflorescences. total volume sugar concentration 81 μL 24%, respectively. bees Epicharis (Anepicharis) dejeanii, Eufriesea violacea, Bombus (Fervidobombus) morio, hummingbird Amazilia fimbriata, two species Hesperiidae considered potential pollinators. other consumers, robbers or thieves. Fruit 35.6% percentage 68%, indicating that are efficient This first to report production consumption different stages (pre-anthesis, flower open, after corolla abscission). high continuous by funiformis, from buds pre-anthesis until abscission show real food availability ways (pollinators, thieves nectar).