Effects of zooplankton and conductivity on tropical Utricularia foliosa investment in carnivory |
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| Authors: | C Guisande C Andrade C Granado-Lorencio SR Duque M Núñez-Avellaneda |
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| Institution: | (1) Facultad de Ciencias del Mar, Universidad de Vigo, Aptdo. 874, 36200- Vigo, Spain (Tel.;(2) Laboratorio de Zoología-Ecología Animal, Departamento de Ciencias Biológicas, Universidad de los Andes, AA 4979 Santafé de Bogotá, Colombia;(3) Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Spain;(4) Instituto Amazónico de Investigaciones-IMANI, Universidad Nacional de Colombia, A. A. 215 Leticia, Colombia;(5) Instituto Amazónico de Investigaciones Científicas-SINCHI, Cra. 5 No. 8-28, Leticia, Colombia |
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| Abstract: | Investment by bladderwort (Utricularia foliosa) in carnivory was estimated in lakes from the Colombian and Brazilian Amazon with different dissolved mineral nutrients and prey availability. As zooplankton abundance in the lake decreased, an increase in the number of bladders per leaf and in the mean bladder size was observed. However, this investment increment in carnivory diminished as the overall availability of dissolved ions in the lake increased. Our results show that carnivorous plants U. foliosa optimise their investment in carnivory, changing bladder number and bladder size according to zooplankton abundance and conductivity. |
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| Keywords: | Amazon river bladderwort carnivorous plant macrophytes predation |
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