Pollination ecology in sympatric winter flowering Helleborus (Ranunculaceae)

Flora: Morphology, Distribution, Functional Ecology of Plants

Volumn 205, Issue 9, 2010, Pages 627-632

  Vesprini, José Luis ^a   Pacini Ettore, E ^b  

^a UNIVERSIDAD NACIONAL DE ROSARIO   (Argentina)

^b UNIVERSITY OF SIENA   (Italy)

Author keywords

Bumblebee pollination; Floral densities; Helleborus; Mutualism; Sympatric species; Winter pollination

Indexed keywords

BEE; CLIMATE CONDITIONS; ENVIRONMENTAL FACTOR; FLOWER VISITING; FLOWERING; HERB; MUTUALISM; PLANT-POLLINATOR INTERACTION; POLLEN; POLLINATION; SPECIES DIVERSITY; SYMPATRY; TEMPERATURE EFFECT;

APOIDEA; HELLEBORUS; HELLEBORUS BOCCONEI; HELLEBORUS FOETIDUS; HEXAPODA; RANUNCULACEAE; VERATRUM;

EID: 77956267519     PISSN: 03672530     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.flora.2009.10.002     Document Type: Article

References (28)

1. Arista M., Oliveira P.E., Gibbs P.E., Talavera S. Pollination and breeding systems of two co-occurring Hirtella species (Chrysobalanaceae) in Central Brazil. Bot. Acta 1997, 110:496-502.
2. Bernhardt C.E., Mitchell R.J., Michaelsy H.J. Effects of population size and density on pollinator visitation, pollinator behavior, and pollen tube abundance in Lupinus perennis. Int. J. Plant Sci. 2008, 169:944-953.
3. Bowman G., Tarayre Æ.M., Atlan A. How is the invasive gorse Ulex europaeus pollinated during winter? A lesson from its native range. Plant Ecol. 2008, 197:197-206.
4. Campbell D.R. Pollinator sharing and seed set of Stellaria puberula: competition for pollination. Ecology 1985, 66:544-553.
5. Canto A., Herrera C.M., Medrano M., Pérez R., García I. Pollinator foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test. Am. J. Bot. 2008, 95:315-320.
6. Connel J.H. Diversity and the coevolution of competitors, or the ghost of the competition past. Oikos 1980, 35:131-138.
7. Dafni A. Pollination Ecology, A Practical Approach 1992, Oxford University Press, Oxford.
8. Fedriani J.M., et al. Geographical variation in the potential of mice to constrain an ant-seed mutualism. Oikos 2004, 105:181-191.
9. Galen C., Gregory T. Interspecific pollen transfer as a mechanism of competition: consequences of foreign pollen contamination for seed set in the alpine wildflower, Polemonium viscosum. Oecologia 1989, 81:120-123.
10. Grime J.P. Plant Strategies, Vegetation Processes and Ecosystem Properties 2001, John Wiley & Sons, Chichester.
11. Heinrich B. Thermoregulation in endothermic insects. Science 1974, 185:747-756.
12. Herrera C.M., et al. Floral integration, phenotypic covariance structure and pollinator variation in bumblebee-pollinated Helleborus foetidus. J. Evol. Biol. 2002, 15:108-121.
13. Herrera C.M., García I.M., Pérez R. Invisible floral larcenies: microbial communities degrade floral nectar of bumble bee-pollinated plants. Ecology 2008, 89:2369-2376.
14. Kwak M.M., Jennersten O. Bumblebee visitation and seed set in Melampyrum pratense and Viscaria vulgaris: heterospecific pollen and pollen limitation. Oecologia 1991, 86:99-104.
15. Mc Guire A.D., Armbruster W.S. An experimental test for reproductive interactions between two sequentially blooming Saxifraga species (Saxifragaceae). Am. J. Bot. 1991, 78:214-219.
16. Pignatti S. Flora d'Italia 1982, vol. 1. Edagricole, Bologna.
17. Randall J.L., Hilu K.W. Interference through improper pollen transfer in mixed stands of Impatiens capensis and I. pallida (Balsaminaceae). Am. J. Bot. 1990, 77:939-944.
18. Rathcke B. Competition and facilitation among plants for pollination. Pollination Biology 1983, 305-329. Academic Press, New York. L. Real (Ed.).
19. Reader R.J. Competitive relationships of some bog ericads for major insect pollinators. Can. J. Bot. 1975, 53:1300-1305.
20. Sprague E.F. Pollination and evolution in Pedicularis (Scrophulariaceae). Aliso 1962, 5:181-209.
21. Tutin T.G., Heywood V.H., Burges N.A., Valentin S.M., Walters S.M., Webb D.A. Flora Europaea I 1964, Cambridge University Press, Cambridge.
22. Vesprini, J.L., 1999. Entomofilia in due specie a fioritura invernale. D. Phil. Thesis. Siena University.
23. Vesprini J.L., Pacini E. Breeding systems in two species of the genus Helleborus. Plant Biosyst. 2000, 134:193-197.
24. Vesprini J.L., Pacini E. Temperature-dependent floral longevity in two Helleborus species. Plant Syst. Evol. 2005, 252:63-70.
25. Vesprini J.L., Nepi M., Pacini E. Nectary structure, nectar secretion patterns and nectar composition in two species of the genus Helleborus. Plant Biol. 1999, 1:560-568.
26. Vesprini J.L., Nepi M., Cresti L., Guarnieri M., Pacini E. Changes in cytoplasmic carbohydrate content during Helleborus pollen presentation. Grana 2002, 41:16-20.
27. Waser N.M. Interespecific pollen transfer and competition between co-occurring plant species. Oecologia 1978, 36:223-236.
28. Waser N.M. Competition for pollination and floral character differences among sympatric plan species: a review of evidence. Handbook of Experimental Pollination Biology 1983, 278-290. Van Nostrand Reinhold, New York. C.E. Jones, R.J. Little (Eds.).