Floral scent and pollination in Browneopsis disepala (Leguminosae: Caesalpinioideae) in western Ecuador |
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Authors: | Jette T Knudsen Bente B Klitgaard |
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Institution: | 1. Chemical Ecology, G?teborg University, Box 461, SE-405 30, G?teborg, Sweden 2. Herbarium, Royal Botanic Gardens, Kew, TW9 3AE, Richmond, Surrey, U.K.
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Abstract: | Aspects of the pollination ecology of Browneopsis disepala, including floral scent composition, were studied. Floral scent was collected with head space techniques and analyzed by coupled gas chromatography-mass spectrometry. Inflorescence and flower development were followed, and amount and concentration of nectar measured. Flower-visiting animals were observed nocturally and diurnally. Inflorescences of B. disepala emit a floral scent that is typical of neither moth- nor bat-pollinated plants, but contains some compounds related to both pollination types. Nectar is produced in quantities and with sugar concentrations falling within a range typical of both moth- and bat-pollinated plants. The inflorescences are visited by both moths and bats, but the behavior of the bats suggests that they are the more efficient pollinators. Browneopsis disepala has a mixed pollination system and is dependent on animals for pollination. |
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