Pre-prints/In review
McManus, CA**, MH Koski, RB Spigler. Urbanization drives parallel shifts in morphology and colouration of Pieris rapae across three cities. bioRiv doi: https://doi.org/10.64898/2026.02.11.705400
Walker, MJ** and RB Spigler. Fine-scale density dependence in a spatially heterogeneous plant population. In review.
Spigler RB, LM Smith-Ramesh, and S Kalisz. Too attractive to self: How pollinators can interfere with the evolution of selfing. bioRxiv doi: https://doi.org/10.1101/2020.05.21.108225
Published
Spigler, RB and S Ostrowski* (2026) Pollination context and abiotic stress reshape variation in floral longevity and its exposure to selection. New Phytologist. 251(3): 1524-1537. https://doi.org/10.1111/nph.71130
Walker MJ** and Spigler RB (2024) Experimental evidence of inbreeding depression for competitive ability and its population-level consequences in a mixed-mating plant. Front. Plant Sci. 15:1398060. doi:10.3389/fpls.2024.1398060
Godineau**, C, K Theodorou, and RB Spigler. 2024. Effect of the seed bank on evolutionary rescue in small populations: univariate and multivariate demogenetic dynamics. The American Naturalist. 204(3) https://doi.org/10.1086/731402
Chmielewski**, MW, Naya**, S, Borghi, M, Cortese*, J, Fernie, AR, Swartz, MT, Zografou, K, Sewall, BJ, & Spigler, RB. 2023. Phenology and foraging bias contribute to sex-specific foraging patterns in the rare declining butterfly Argynnis idalia idalia. Ecology and Evolution, 13, e10287. Open access.
Spigler, RB and A Charles*. 2023. Inbreeding reduces floral longevity and flower size in the mixed-mating biennial Sabatia angularis. International Journal of Plant Sciences 184(3): 157-163. Available open access
Spigler, RB and R Maguiña*. 2022. Changes in female function and autonomous selfing across floral lifespan interact to drive variation in the cost of selfing. American Journal of Botany, 109(4), pp.616-627. Available open access
McElderry, R, RB Spigler, D Vogler, and S Kalisz. 2022. How early does the selfing syndrome arise? Associations between selfing ability and flower size within populations of the mixed mater Collinsia verna. American Journal of Botany 109(2) 1– 12. https://doi.org/10.1002/ajb2.1804
Smith**, GX, M Swartz, and RB Spigler. 2021. Causes and consequences of variation in heterospecific pollen receipt in Oenothera fruticosa. American Journal of Botany. 108:1612–1624 https://doi.org/10.1002/ajb2.1720
Frazee**, LJ, J Rifkin, DC Maheepala, A-G Grant, S Wright, S Kalisz, A Litt and RB Spigler. 2021. New genomic resources and comparative analyses reveal differences in floral gene expression in selfing and outcrossing Collinsia sister species. G3: Genes|Genomes|Genetics https://doi.org/10.1093/g3journal/jkab177
Emel**, SL, S Wang, RP Metz, and RB Spigler. 2021. Type and intensity of surrounding human land use, not local environment, shape genetic structure of a native grassland plant. Molecular Ecology 30:639–655.
Spigler, R. B. and A. J. Woodard*. 2019. Context-dependency of resource allocation trade-offs highlights constraints to the evolution of floral longevity in a monocarpic herb. New Phytologist 221: 2298-2307.doi:10.1111/nph.15498.
Randle, A.M, R.B. Spigler, and S. Kalisz. 2018. Shifts to earlier selfing in sympatry may reduce costs of pollinator sharing. Evolution 72-8: 1587–1599.
Spigler, R. B. 2018. Small and surrounded: population size and land use intensity interact to determine reliance on autonomous selfing in a monocarpic plant. Annals of Botany.
Spigler, R.B. and S. Kalisz. 2017. Persistent pollinators and the evolution of complete selfing. American Journal of Botany. 104 (12): 1783 – 1786.
Emel**, S.L., S. J. Franks, and R.B. Spigler. 2017. Phenotypic selection varies with pollination intensity across populations of Sabatia angularis. New Phytologist. doi:10.1111/nph.14608
Spigler, R.B., K Theodorou, and S.-M. Chang. 2017. Inbreeding depression and drift load in small populations at demographic disequilibrium. Evolution 71(1):81-94 | DOI: 10.1111/evo.13103
Spigler, R.B. 2017. Plasticity of floral longevity and floral display in the self-compatible biennial Sabatia angularis (Gentianaceae): untangling the role of multiple components of pollination. Annals of Botany 119:167–176 | doi: 10.1093/aob/mcw195. Click here for full text!
Kalisz, S., R.B. Spigler, and C.C. Horvitz. 2014. In a long-term experimental demography study, excluding ungulates reversed invader’s explosive population growth rate and restored natives. PNAS 111(12): 4501-4506.
Spigler, R.B. and S. Kalisz. (2013) Phenotypic plasticity in mating system traits in the annual Collinsia verna. Botany 91(9): 597-604.
Ashman, T.-L., R.B. Spigler, M. Goldberg, R. Govindarajulu. (2013) Fragaria: a polyploid lineage for understanding sex chromosome evolution. ‘New Insights on Plant Sex Chromosomes’ Nova Science Publishers. Rafael Navajas-Pérez (Editor).
Spigler, R.B. and T.-L. Ashman (2012) Gynodioecy to dioecy: Are we there yet? (Invited and peer-reviewed review for a special issue on plant mating) Annals of Botany 109: 531-543.
Spigler, R.B. and T.-L. Ashman (2011) Sex ratio and subdioecy in Fragaria virginiana: the roles of plasticity and gene flow examined. New Phytologist 190: 1058-1068.
Spigler, R.B., K.L. Lewers, and T.-L. Ashman (2011) Genetic architecture of sexual dimorphism in a subdioecious plant with a proto-sex chromosome. Evolution 65-4: 1114-1126. Selected for ‘Faculty of 1000 Biology’ by D. Charlesworth: http://f1000.com/1001695
Goldberg*, M.T., R.B. Spigler, and T.-L. Ashman (2010) Comparative genetic mapping points to different sex chromosomes in sibling species of wild strawberry (Fragaria). Genetics 186: 1425-1433.
Spigler, R.B., K.S. Lewers, A.L. Johnson, and T.-L. Ashman (2010) Comparative mapping reveals autosomal origin of sex chromosome in octoploid Fragaria virginiana. Journal of Heredity (Special Issue on Sex and Recombination) 101 (Supplement I): S107-S117.
Bishop*, E., R.B. Spigler, and T.-L. Ashman (2010) Sex-allocation plasticity in hermaphrodites of sexually dimorphic Fragaria virginiana (Rosaceae). Botany 88: 231-240.
Spigler, R.B., J.L. Hamrick, and S.-M. Chang (2010) Increased inbreeding but not homozygosity in small populations of Sabatia angularis (Gentianaceae). Plant Systematics and Evolution 284: 131-140.
Spigler, R.B. and S.-M. Chang (2009) Pollen limitation and reproduction varies with population size in experimental populations of Sabatia angularis (Gentianaceae). Botany 87: 330-338.
Spigler, R.B., K.S. Lewers, D. Main, and T.-L. Ashman (2008) Genetic mapping of sex determination in a wild strawberry, Fragaria virginiana, reveals earliest form of sex chromosome. Heredity 101: 507-517.
Featured in ‘News and Commentary’: Moore, R.C. (2008) A ‘missing link’ in the evolution of sex chromosomes. Heredity 102: 211-212. Selected for ‘Faculty of 1000 Biology’ by D. Charlesworth: http://f1000.com/1129838
Spigler, R.B. and S.-M. Chang (2008) Effects of plant abundance on reproductive success in the biennial Sabatia angularis (Gentianaceae): spatial scale matters. Journal of Ecology 96: 323-333.