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Details of this Research Plan
| Research Project Number: | 2010-588 |
| Research Project Title: | 1) Sex under siege: multiple species effects on a gynodioecious plant, Polemonium foliosissimum. and 2) Effects of vegetative damage on life-history traits in Scarlet gilia, Ipomopsis aggregata. |
| Investigator: | Alison Brody |
| Abstract:: | NON-TECHNICAL ABSTRACT: Plants employ diverse mating strategies to succeed. Although most flowering plants produce “perfect” flowers – i.e., flowers that function both as females in producing seeds and males in producing pollen – in some species the sexes are expressed in different plants, a term called “dioecy”. The path from perfect flowers to separate sexes has evolved in over half of all plant families. Gynodioecy, whereby some plants produce perfect flowers while others produce flowers with vestigial anthers, is common and thought to be an evolutionary intermediate between full hermaphrodites and complete separation of the sexes. The evolutionary trajectories, or selection pressures, that promotes the separation of the sexes remains a mystery. I am interested in asking how the interactions of plants with animals that include pollinators, seed predators and herbivores, affect the sexes differently and thus may help explain sex-ratios in a gynodioecious plant, Polemonium foliosissimum. By understanding the gender-specific effects of multispecies interactions my work will provide insight to the conditions under which dioecy might evolve. Polemonium foliosissimum is a perennial plant that occurs throughout the Elk and West Elk Mountains. It is pollinated primarily by bumblebees. It is grazed by deer, cattle and sheep. In the course of our work, in addition to the questions outlined above, we hope to determine how public lands could be managed to preserve native pollinators by discovering how herbivores impact their host plants. We will provide data to the Forest Service that could be useful in developing grazing and deer control strategies that support local and regional biodiversity. |
| Affiliated Institution(s):: | University of Vermont |
| Collaborator(s):: | Gretel Clarke (PhD student) |
| Year submitted:: | 2010 |
| Study Period:: | 4 years beginning in 2010 |
| Status/Notes:: | login as a Research Committee member Current Status = Under review. |
| Approval/Conditions of Approval:: | The "Approval/Conditions of Approval" memo is not available. |
| Funding Duration(s):: | |
| Funding Source(s):: | I have submitted an NSF proposal but, until funded, will be using personal funds |
| Funding Amount(s):: | |
| Principal organism(s):: | Polemonium foliosissimum Hylemya sp. (Diptera: Anthomyiidae) bumblebees |
| Classification:: |
Level = species interactions Theme = Research Subject = Pollination |
| Info on any prior research sites:: | at the intersection of the Copper Creek trail to the right and the old mining road to Avery at the left above Treasury cabin to the east of the road between Pelton and billy's old cabin all of these have been cleaned up |
| Prior conditions of research:: | (((((no |
| Mapped locations of Alison Brody : | Click here to search in the research site database |
| Project Description: | Project description details for this Research Plan are withheld from public view by Lab policy. Please contact director at rmbl.org for more information on this policy. |
| Why RMBL is appropriate for this research:: | |
| References used for this research plan:: |
REFERENCES (*denotes publications from work at RMBL)
Ashman, T. L. 2002. The role of herbivores in the evolution of separate sexes from hermaphroditism. Ecology 83 5:1175-1184.
Ashman, T. L. 2006. The evolution of separate sexes: a focus on the ecological context. In The ecology and evolution of flowers. S. C. H. Barrett, Harder, L.D.,
Ashman, T. L., D. H. Cole, et al. 2004. Sex-differential resistance and tolerance to herbivory in a gynodioecious wild strawberry. Ecology 85 9:2550-2559.
Ashman, T. L. and E. A. King 2005. Are flower-visiting ants mutualists or antagonists? A study in a gynodioecious wild strawberry. American Journal of Botany 92 5:891-895.
Ashman, T. L. and L. Penet 2007. Direct and indirect effects of a sex-biased antagonist on male and female fertility: Consequences for reproductive trait evolution in a gender-dimorphic plant. American Naturalist 169 5:595-608.
Ashman, T. L. and M. Stanton 1991. Seasonal-variation in pollination dynamics of sexually dimorphic Sidalcea-oregana ssp oregano ssp spicata Malvaceae Ecology 72 3:993-1003.
Asikainen, E. and P. Mutikainen 2005. Pollen and resource limitation in a gynodioecious species. American Journal of Botany 92 3:487-494.
Bailey, M. F. and L. F. Delph 2007. A field guide to models of sex-ratio evolution in gynodioecious species. Oikos 116 10:1609-1617.
*Brody, A. K. 1997. Effects of pollinators, herbivores, and seed predators on flowering phenology. Ecology 78 6:1624-1631.
*Brody, A. K. and R. J. Mitchell 1997. Effects of experimental manipulation of inflorescence size on pollination and pre-dispersal seed predation in the hummingbird-pollinated plant Ipomopsis aggregata. Oecologia 110 1:86-93.
*Brody, A. K. and S. I. Morita 2000. A positive association between oviposition and fruit set: female choice or manipulation? Oecologia 124 3:418-425.
*Brody, A. K., M. V. Price, et al. 2007. Life-history consequences of vegetative damage in scarlet gilia, a monocarpic plant. Oikos 116 6:975-985.
*Brody, A. K., R.E. Irwin, M.L. McCutcheon, E.C. Parsons. 2008. Interactions between nectar robbers and seed predators mediated by a shared host plant, Ipomopsis aggregata. Oecologia, 155:75–84
Campbell, D. R. 1989. Inflorescence size, test of the male function hypothesis. American Journal of Botany 76 5:730-738.
Campbell, D. R., N. M. Waser, et al. 1994. In direct selection of stigma position in Ipomopsis aggregata via a genetically correlated trait. Evolution 48 1:55-68.
*Cariveau, D., R.E. Irwin, A.K. Brody, L.S. Garcia-Mayeya, and A. von der Ohe. 2004. Direct and indirect effects of pollinators and seed predators to selection on plant and floral traits. Oikos 104: 15-26.
Case, A. L. 2000. The evolution of combined versus separate sexes in Wurmbea Colchicaceae. Botany.
Caswell, H. 1978. A general formula for the sensitivity of population growth rate to changes in life history parameters. Theoretical Population Biology 14: 215-230.
Charlesworth, B. 2006. There is no new evidence that undermines evolution. Nature 444 7120:680-680.
Charlesworth, B. and D. Charlesworth 1978. A model for the evolution of dioecy and gynodioecy. American Naturalist 112: 975-997.
Charlesworth, B. and D. Charlesworth 1999. The genetic basis of inbreeding depression. Genetical Research 74 3:329-340.
Charlesworth, D. 1981. A further study of the problem of maintenance of females in gynodioecious species. Heredity 46: 27-39.
Cole, D. H. and T. L. Ashman 2005. Sexes show differential tolerance to Spittlebug damage and consequences of damage for multi-species interactions. American Journal of Botany 92 10:1708-1713.
Collin, C. L., P. S. Pennings, et al. 2002. Natural enemies and sex: how seed predators and pathogens contribute to sex-differential reproductive success in a gynodioecious plant. Oecologia 131 1:94-102.
Collin, C. L. and J. A. Shykoff 2010. Flowering phenology and female fitness: impact of a pre-dispersal seed predator on a sexually polymorphic species. Plant Ecology 206 1:1-13.
Committee on the Status of Pollinators in
Delannay, X. 1979. Evolution of male-sterility mechanisms in gynodioecious and dioecious species of Cirsium Cynareae, Compositae. Plant systematics and evolution 132 4:327-332.
Delph, L. F. and S. B. Carroll 2001. Factors affecting relative seed fitness and female frequency in a gynodioecious species, Silene acaulis. Evolutionary Ecology Research 3 4:487-505.
Delph, L. F. and C. M. Lively 1992. Pollinator visitation, floral display, and nectar production of the sexual morphs of a gynodioecious shrub. Oikos 63 2:161-170.
Delph, L. F., P. Touzet, et al. 2007. Merging theory and mechanism in studies of gynodioecy. Trends in Ecology & Evolution 22 1:17-24.
Dorsett, B. and A. Pike 1995. Partition of fragrance between calyx and corolla in Polemonium foliosissimum. American
*Freeman, R.S., A.K. Brody and C.D. Neefus. 2003. Flowering phenology and compensation for herbivory in Ipomopsis aggregata. Oecologia 136: 394-401
Hladun, K. R. and L. S. Adler 2009. Influence of leaf herbivory, root herbivory, and pollination on plant performance in Cucurbita moschata. Ecological Entomology 34 1:144-152.
*Irwin, R. E. and A. K. Brody 1998. Nectar robbing in Ipomopsis aggregata: effects on pollinator behavior and plant fitness. Oecologia 116 4:519-527.
*Irwin, R. E. and A. K. Brody 1999. Nectar-robbing bumble bees reduce the fitness of Ipomopsis aggregata (Polemoniaceae). Ecology 80 5:1703-1712.
*Irwin, R. E. and A. K. Brody 2000. Consequences of nectar robbing for realized male function in a hummingbird-pollinated plant. Ecology 81 9:2637-2643.
*Irwin, R. E., A. K. Brody, et al. 2001. The impact of floral larceny on individuals, populations, and communities. Oecologia 129 2:161-168.
*Irwin, R. E., L. S. Adler and A. K. Brody. 2004. The dual role of floral traits: Pollinator attraction and plant defense. Ecology 85 6:1503-1511.
Knight, T. M. 2004. The effects of herbivory and pollen limitation on a declining population of Trillium grandiflorum. Ecological Applications, 14 3:915–928
Knight, T. M., H. Caswell and
Krupnick, G. A., A. E. Weis, et al. 1999. The consequences of floral herbivory for pollinator service to Isomeris arborea. Ecology 80 1:125-134.
Lehtila, K. and S. Y. Strauss 1999. Effects of foliar herbivory on male and female reproductive traits of wild radish, Raphanus raphanistrum. Ecology 80 1:116-124.
McCauley, D. E. and M. F. Bailey 2009. Recent advances in the study of gynodioecy: the interface of theory and empiricism. Annals of Botany 104 4:611-620.
Mothershead, K. and R. J. Marquis 2000. Fitness impacts of herbivory through indirect effects on plant-pollinator interactions in Oenothera macrocarpa. Ecology 81 1:30-40.
Muenchow, G. E. 1998. Subandrodioecy and male fitness in Sagittaria lancifolia subsp. lancifolia Alismataceae. American Journal of Botany 85 4:513-520.
Penet, L., C. L. Collin, et al. 2009. Florivory increases selfing: an experimental study in the wild strawberry, Fragaria virginiana. Plant Biology 11 1:38-45.
*Price, M.V., N. M. Waser, R.E. Irwin, D.R. Campbell and A.K. Brody. 2005. Temporal and Spatial Variation in Pollination of a Montane Herb: a Seven-Year Study. Ecology 86: 2106–2116.
*Price, M.V., D.R. Campbell, N. M. Waser and A.K. Brody. 2008. Bridging the generation gap in plants: pollination, parental fecundity, and offspring demography. Ecology, 89: 1596-1604.
Ramula, S.,
Renner, S. S. and R. E. Ricklefs 1995. Dioecy and Its Correlates in the Flowering Plants. American Journal of Botany 82 5:596-606.
Steets, J. A. and T. L. Ashman 2004. Herbivory alters the expression of a mixed-mating system. American Journal of Botany 91 7:1046-1051.
Steets, J. A., T. M. Knight, et al. 2007. The interactive effects of herbivory and mixed mating for the population dynamics of Impatiens capensis. American Naturalist 170 1:113-127.
Stowe, K. A., R. J. Marquis, et al. 2000. The evolutionary ecology of tolerance to consumer damage. Annual Review of Ecology and Systematics 31: 565-595.
Strauss, S. Y. and R. E. Irwin 2004. Ecological and evolutionary consequences of multispecies plant-animal interactions. Annual Review of Ecology Evolution and Systematics 35: 435-466.
Strauss, S. Y., J. A. Rudgers, et al. 2002. Direct and ecological costs of resistance to herbivory. Trends in Ecology & Evolution 17 6:278-285.
Thomson, J. D. and J. Brunet 1990. Hypotheses for the evolution of dioecy in seed plants. Trends in Ecology & Evolution 5 1:11-16.
Waser, N. M. and L. A. Real 1979. Effective mutualism between sequentially flowering plant species. Nature 281: 670-672.
Williams, C. F., M. A. Kuchenreuther, et al. 2000. Floral dimorphism, pollination, and self-fertilization in gynodioecious Geranium richardsonii Geraniaceae. American Journal of Botany 87 5:661-669.
Zhang, Y. W., G. W. Robert, et al. 2007. Nectar robbing of a carpenter bee and its effects on the reproductive fitness of Glechoma longituba Lamiaceae. Plant Ecology 193 1:1-13.
Zhang, Y. W., Y. Wang, et al. 2008. Sex expression, female frequency, and reproductive output in a gynodioecious clonal herb, Glechoma longituba Lamiaceae. Plant Ecology 199 2:255-264.
Zimmerman, M. 1980a. Reproduction in Polemonium: competition for pollinators. Ecology 61: 497-501.
Zimmerman, M. 1980b. Reproduction in Polemonium: pre-dispersal seed predation. Ecology 61: 497-501.
*Zimmerman, M. and A. K. Brody. 1998. Choices and consequences of oviposition by Hylemya Delia sp. Diptera:Anthomyiidae. Journal of Insect Behavior 11 3:371-381.
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| Publications of Alison Brody :: | Click here |
| Metadata of Alison Brody : | Click here |
| CV (if any): : | CVs are withheld from public view by Lab policy. |
| Extra Information / Notes:: | There are is no extra information for this plan supplied by the author. |
