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COMPONENTS OF PHENOTYPIC SELECTION: POLLEN EXPORT AND FLOWER COROLLA WIDTH IN IPOMOPSIS AGGREGATA
Abstract
In the hummingbird-pollinated herb Ipomopsis aggregata, selection through male function during pollination favors wide corolla tubes. We explored the mechanisms behind this selection, using phenotypic selection analysis to compare effects of corolla width on two components of male pollination success, pollinator visit rate and pollen exported per visit. During single visits by captive hummingbirds, flowers with wider corollas exported more pollen, and more dye used as a pollen analogue, to stigmas of recipient flowers. Corolla width was less strongly related to visit rate in the field, and had no direct effect on visit rate after nectar production and corolla length were controlled for. Moreover, the phenotypic selection differential was 80% higher for the effect on pollen exported per visit, suggesting that this is the more important mechanism of selection.
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Platt, J. R. (1964) · Science · doi:10.1126/science.146.3642.347 · Cited by 2,907
Cited by
Pollination Syndromes and Floral Specialization
Fenster, C. B., Armbruster, W. S., Wilson, P., Dudash, M. R., & Thomson, J. D. (2004) · Annual Review of Ecology, Evolution, and Systematics · doi:10.1146/annurev.ecolsys.34.011802.132347 · Cited by 2,241
Effects of flower size and number on pollinator visitation to wild radish, Raphanus raphanistrum
Conner, J. K., & Rush, S. (1996) · Oecologia · doi:10.1007/bf00330014 · Cited by 370
Diversity and Temporal Change in the Effective Pollinators of Asclepias Tuberosa
Fishbein, M., & Venable, D. L. (1996) · Ecology · doi:10.2307/2265576 · Cited by 275
Herrera, C. M. (1993) · Ecological Monographs · doi:10.2307/2937101 · Cited by 263
The genetic basis of speciation in the Giliopsis lineage of Ipomopsis (Polemoniaceae)
Nakazato, T., Rieseberg, L. H., & Wood, T. E. (2013) · Heredity · doi:10.1038/hdy.2013.41 · Cited by 33
Metadata
- Authors
- Campbell, D. R., Waser, N. M., Price, M. V., Lynch, E. A., & Mitchell, R. J.
- Venue
- Evolution
- Publisher
- Oxford University Press (OUP)
- Published
- 1991-09
- Volume
- 45
- Issue
- 6
- Pages
- 1458-1467
- ISSN
- 0014-3820 (ISSN-L)
- 1558-5646
- OpenAlex
- W2333683931
- Cited by
- 236
- References
- 1
- FWCI
- 23.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Campbell, D. R., Waser, N. M., Price, M. V., Lynch, E. A., & Mitchell, R. J. (1991). COMPONENTS OF PHENOTYPIC SELECTION: POLLEN EXPORT AND FLOWER COROLLA WIDTH IN IPOMOPSIS AGGREGATA. Evolution. https://doi.org/10.1111/j.1558-5646.1991.tb02648.x
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
